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Search results for: Period: 01.01.1999

  • <p class="MsoCommentText">The photomontage shows a sample of solid, pure niobium before coating (left), and coated with a thin layer of Nb<sub>3</sub>Sn (right).</p>SCIENCE HIGHLIGHT      15.07.2019

    Accelerator physics: alternative material investigated for superconducting radio-frequency cavity resonators

    In modern synchrotron sources and free-electron lasers, superconducting radio-frequency cavity resonators are able to supply electron bunches with extremely high energy. These resonators are currently constructed of pure niobium. Now an international collaboration has investigated the potential advantages a niobium-tin coating might offer in comparison to pure niobium. [...]

  • SCIENCE HIGHLIGHT      10.07.2019

    Oldest completely preserved lily discovered

    Already 115 million years ago, tropical flowering plants were apparently very diverse and showed all typical characteristics. This is the conclusion of an international team of researchers led by Clément Coiffard, Museum für Naturkunde Berlin. The team reported in the renowned journal Nature Plants on the oldest completely preserved lily, Cratolirion bognerianum, which was discovered at a site in present-day Brazil. With the help of 3D computer tomography at the Helmholtz-Zentrum Berlin, details on the back of the fossilised plant could also be analysed. The results raise new questions about the role of the tropics in the development of past and present ecosystems. [...]

  • <p>Group picture at arrival day at HZB.</p>NEWS      10.07.2019

    Summer in the laboratory: 24 students from all over the world start their summer project

    For eight weeks the summer students are now working on a research project at the Helmholtz Centre Berlin. Experienced scientists of the HZB will support them. On Thursday, 30 August, they will present their results. [...]

  • <p>An X-ray pulse probes the delocalization of iron 3d electrons onto adjacent ligands.</p>SCIENCE HIGHLIGHT      09.07.2019

    Charge transfer within transition-metal dyes analysed

    Transition-metal complexes in dye-based solar cells are responsible for converting light into electrical energy. A model of spatial charge separation within the molecule has been used to describe this conversion. However, an analysis at BESSY II shows that this description of the process is too simple. For the first time, a team there has investigated the fundamental photochemical processes around the metal atom and its ligands. The study has now been published in “Angewandte Chemie, international Edition” and is displayed on the cover. [...]

  • <p>When illuminated by the synchrotron light, nickel emits x-rays itself due to the decay of valence electrons. The number of emitted photons reduces when increasing the temperature from room temperature (left) to 900&deg;C (right).</p>SCIENCE HIGHLIGHT      28.06.2019

    Utrafast magnetism: electron-phonon interactions examined at BESSY II

    How fast can a magnet switch its orientation and what are the microscopic mechanisms at play ? These questions are of first importance for the development of data storage and computer chips. Now, an HZB team at BESSY II has for the first time been able to experimentally assess the principal microscopic process of ultra-fast magnetism. The methodology developed for this purpose can also be used to investigate interactions between spins and lattice oscillations in graphene, superconductors or other (quantum) materials. [...]

  • <p>The Physical Society of Berlin is awarding the Karl-scheel-Prize to Steve Albrecht.</p>NEWS      24.06.2019

    Steve Albrecht wins the 2019 Karl Scheel Prize

    This year's Karl Scheel Prize from the Physikalische Gesellschaft zu Berlin honours Steve Albrecht of the Helmholtz-Zentrum Berlin für Materialien und Energie for his work in the field of highly efficient tandem solar cell absorbers made of metal-halide perovskites. [...]

  • NEWS      19.06.2019

    Support for the sheep at Campus Wannsee

    Since mid-May, sheep have been grazing on the Wannsee campus and contributing to landscape conservation. They have now been reinforced: Since 14 June 19, five sheep and five goats have been supporting the existing herd in its "work". Since the goats prefer to eat blackberries and thorny plants, they find ideal conditions on the natural property. [...]

  • <p>1st place: "The interior of an electron beam evaporator in operation"</p>NEWS      18.06.2019

    1st place for "Glowing Silicon Lake" at the HZB photo competition for the Long Night of Science

    More than 200 people have chosen their favourite pictures in the photo competition "Moments at the HZB" during the Long Night of Science. The winners have now been chosen, but the decision was extremely close. [...]

  • NEWS      17.06.2019

    Members of the Berlin House of Representatives (Abgeordnetenhaus) visit Helmholtz-Zentrum Berlin

    On 17 June 2019, representatives of the Committee for Science and Research of the Berlin House of Representatives met with the management and scientists of the Helmholtz-Zentrum Berlin (HZB). During their two-hour visit, they visited energy research laboratories and discussed the campus's prospects for the site after the final shutdown of the BER II research reactor. [...]

  • <p>This new laboratory building received the silver plaque "Sustainable Building" in April 2019.</p>NEWS      17.06.2019

    Silver plaque "Sustainable building" for laboratory building in Wannsee

    In Wannsee, a new laboratory building for organic chemistry (LE building) was built in just one and a half years, which has now been awarded the silver plaque "Sustainable Building". It is the first HZB building to be certified according to the strict criteria. On the ground floor there is a physical-chemical laboratory for the institute "Functional Oxides for Energy-Efficient Information Technologies (EM-IFOX)". [...]

  • NEWS      17.06.2019

    1300 visitors at the HZB location Wannsee at the Long Night of Science

    Despite high summer temperatures, the HZB was able to welcome more than 1300 people to the Long Night of Science at Wannsee. This is about 15 percent more than the last time (2017) when the location took part. Visitor magnets were the guided tours through the energy research laboratories and the experimental halls around the research reactor. [...]

  • NEWS      11.06.2019

    Long Night of Science at HZB's Wannsee site: Solar cells, environmentally friendly hydrogen and a visit to the experimental halls of the research reactor

    The sun provides an enormous amount of energy. But can we really use it to cover our energy needs? Can solar energy actually be stored? And how powerful will innovative batteries be? During the Long Night of Science on 15 June 2019 (17:00 - 24:00) at the Helmholtz Centre Berlin in Wannsee, visitors can talk to researchers, discover secret places and interesting details.Bring your identity card with you! [...]

  • NACHRICHT      07.06.2019

    Neuer „lichtblick“ erschienen

    Heute demonstrieren wieder viele Schülerinnen und Schüler bei der »Fridays for Future«-Bewegung. Solarforscher Klaus Jäger unterstützt die protestierenden jungen Menschen aktiv. »Klimaschutz ist schlussendlich Menschenschutz«, sagt er in der Titelgeschichte. Er erzählt unter anderem von seinen Nachmittagen im Berliner Naturkundemuseum, wo er mit gut informierten Jugendlichen diskutiert. [...]

  • NEWS      05.06.2019

    Photovoltaics are growing faster than expected in the global energy system

    Dramatic cost reductions and the rapid expansion of production capacities make photovoltaics one of the most attractive technologies for a global energy turnaround. Not only the electricity sector, but also transport, heating, industry and chemical processes will in future be supplied primarily by solar power, because it is already the cheapest form of electricity generation in large parts of the world. This is where opportunities and challenges lie - at the level of the energy system as well as for research and industry. Leading international photovoltaic researchers from the Global Alliance for Solar Energy Research Institutes describe the cornerstones of future developments in an article published in the journal "Science" on 31 May. [...]

  • <p>The illustration is alluding to the laser experiment in the background and shows the structure of TGCN.</p>SCIENCE HIGHLIGHT      05.06.2019

    Organic electronics: a new semiconductor in the carbon-nitride family

    Teams from Humboldt-Universität and the Helmholtz-Zentrum Berlin have explored a new material in the carbon-nitride family. Triazine-based graphitic carbon nitride (TGCN) is a semiconductor that should be highly suitable for applications in optoelectronics. Its structure is two-dimensional and reminiscent of graphene. Unlike graphene, however, the conductivity in the direction perpendicular to its 2D planes is 65 times higher than along the planes themselves. [...]

  • <p>Prof. Dr. Jan L&uuml;ning (l.) and Prof. Dr. Bernd Rech (r.) have been appointed as scientific directors of HZB since June 1, 2019.</p>NEWS      04.06.2019

    Helmholtz-Zentrum Berlin has new scientific management

    As of 1 June 2019, Prof. Dr. Bernd Rech and Prof. Dr. Jan Lüning are the new scientific directors of Helmholtz-Zentrum Berlin für Materialien und Energie. Bernd Rech is responsible for the “Energy and Information” department and Jan Lüning heads the “Matter” department. Thus the HZB Supervisory Board has appointed two internationally recognised experts at the top of HZB. [...]

  • NEWS      04.06.2019

    Federal Ministry of Education and Research supports the development of a miniaturised EPR spectrometer

    Several research institutions are developing a miniaturized electron paramagnetic resonance (EPR) device with industrial partner Bruker to investigate semiconductor materials, solar cells, catalysts and electrodes for fuel cells and batteries. The Federal Ministry of Education and Research (BMBF) is funding the "EPR-on-a-Chip" or EPRoC project with 6.7 million euros. On June 3, 2019, the kick-off meeting took place at the Helmholtz-Zentrum Berlin. [...]

  • NEWS      29.05.2019

    90 preschool children experiment in the school lab for the Day of the Little Researchers

    Once a year the school lab says: Open doors for daycare children! 90 preschool children from five kindergartens experimented in the HZB school lab in Berlin-Adlershof for the nationwide Day of Little Researchers. Using homemade spectroscopes, they studied the properties of light and looked at poster snippets under the microscope. Actions are also planned at the Wannsee site. [...]

  • NEWS      28.05.2019

    Adolfo Velez Saiz is a professor of accelerator physics at Technische Universität Dortmund

    Technische Universität Dortmund and Helmholtz-Zentrum Berlin have jointly appointed Prof. Adolfo Velez Saiz as a professor of accelerator physics. He heads the Cavity Development workgroup at the HZB institute SRF – Science and Technology. With this appointment, HZB is expanding its expertise in the development of new accelerator technologies. [...]

  • <p>Jakob Bombsch received an award for his poster on CIGSe absorbers at the spring meeting of the Materials Research Society.</p>NEWS      24.05.2019

    HZB-Doktorand receives poster award

    At the spring meeting of the Materials Research Society, Jakob Bombsch received an award for his poster on CIGSe absorbers for thin-film photovoltaics. Bombsch is a researcher in the department for Interface Design headed by Prof. Marcus Bär.  [...]

  • <p>The idea: during summer, a module with photovoltaic and catalytic materials is splitting molten ice into hydrogen (H<sub>2</sub>) and oxygen. The H<sub>2</sub> is stored.</p>NEWS      22.05.2019

    Energy for Antarctica: solar hydrogen as an alternative to crude oil?

    Volkswagen Foundation funds feasibility study by HZB experts in artificial photosynthesis

    The sun shines at the South Pole as well – and in summer almost around the clock. Instead of supplying research stations in the Antarctic with crude oil for producing the electricity and heating they need, solar hydrogen could be produced from sunlight in summer as an alternative. Hydrogen has a high energy density, is easy to store, and can be used as fuel when needed later without polluting the environment. An intriguingly simple idea - but one that raises many questions. Matthias May (HZB) and Kira Rehfeld (Heidelberg University) now want to examine how feasible this kind of solar fuel generation might be in Antarctica. The project is receiving financial support from the Volkswagen Foundation. [...]

  • NACHRICHT      21.05.2019

    Hörtipp: Die wissenschaftlichen Geschäftsführer im Interview des rbb-Inforadios

    „Physik made in Berlin“: Mitten in Berlin betreibt das HZB einen Forschungsreaktor und einen Teilchenbeschleuniger. Thomas Prinzler vom rbb-Inforadio spricht mit den wissenschaftlichen Geschäftsführern Prof. Bernd Rech und Prof. Jan Lüning darüber, was Forscher mit den kleinen Teilchen alles herausfinden können. Und warum die Anlagen ein Aushängeschild für Berlin sind. [...]

  • <p>Bassi presented results on new phases in the quaternary Fe-Ti-W-O system for application as photoelectrocatalyst in light-assisted water splitting.</p>NEWS      20.05.2019

    Posterprize for HZB postdoc Prince Saurabh Bassi

    Dr. Prince Saurabh Bassi was awarded the poster prize at “International Bunsen-Discussion-Meeting on Fundamentals and Applications of (Photo) Electrolysis for Efficient Energy Storage”. He is a postdoctoral fellow working with Prof. Sebastian Fiechter in the Institute for Solar Fuels. [...]

  • NEWS      17.05.2019

    Obituary for Prof. em. Dr. Hans-Joachim Lewerenz

    We are mourning the death of Prof. em. Dr. Hans-Joachim Lewerenz, who passed away on 24 April 2019 at the age of 70. From 1981 to 2014 he worked as a scientist and as department head in the field of renewable energies at our research institute. He was a pioneer in his research in photoelectrochemistry and photovoltaics. Prof. Hans-Joachim Lewerenz was a highly esteemed colleague and discussion partner far beyond the Center. We pay tribute to his work in the obituary.  [...]

  • <p>Seven sheep and two lambs are now grazing on the campus in Berlin-Wannsee, replacing the lawn mower.</p>NEWS      17.05.2019

    Sheep graze the Lise-Meitner-Campus in Wannsee

    On 15 May 2019 they arrived at the campus in Berlin-Wannsee: Seven female sheep and two lambs of the domestic sheep breed "Skudde". By autumn, they will graze the semi-natural campus and thus contribute to biodiversity. By doing without extensive mowing, natural wild meadows are to be created that are particularly insect- and bee-friendly. [...]

  • <p>HZB-Teams are exploring and developing new technologies for perovskite based solar cells in the innovation lab HySPRINT.</p>NEWS      16.05.2019

    LAUNCH OF EPKI: European Perovskite Initiative for the development of Perovskite based solar technology

    Perovskite based solar cells have made tremendous progress over the last decade achieving lab-scale efficiencies of 24.2% early 2019 in single-junction architecture and up to 28% in tandem (perovskite associated with crystalline silicon), turning it into the fastest-advancing solar technology to date. With the HySPRINT project and the recruitment of highly talented young scientists, Helmholtz-Zentrum Berlin has built up a considerable research capacity in the field of perovskite materials in recent years and is participating in the European Perovskite Initiative EPKI that has now been launched. [...]

  • NEWS      15.05.2019

    The HZB at INTERSOLAR in Munich

    The Helmholtz-Zentrum Berlin (HZB) will present itself from 15 to 17 May at INTERSOLAR in Munich, the world's largest solar trade fair. The HZB is one of the world's leading research centres in the field of solar energy and presents the latest developments in photovoltaics and solar fuels. The HZB offers a wide range of cooperation opportunities for companies - from contract research to joint research projects. [...]

  • NEWS      14.05.2019

    Bernd Stannowski is Professor at the Beuth University of Applied Sciences Berlin

    Prof. Dr. Bernd Stannowski has received and accepted a call for a joint S-Professorship for "Photovoltaics" at the Beuth University of Applied Sciences Berlin. The physicist heads the working group "Silicon Photovoltaics" at the Competence Center Thin Film and Nanotechnology for Photovoltaics Berlin (PVcomB) of the HZB. [...]

  • <p>Experiments at the femtoslicing facility of BESSY II revealed the ultrafast angular momentum flow from Gd and Fe spins to the lattice via orbital moment during demagnetization of GdFe alloy.</p>SCIENCE HIGHLIGHT      10.05.2019

    Laser-driven Spin Dynamics in Ferrimagnets: How does the Angular Momentum flow?

    When exposed to intense laser pulses, the magnetization of a material can be manipulated very fast. Fundamentally, magnetization is connected to the angular momentum of the electrons in the material. A team of researchers led by scientists from the Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (MBI) has now been able to follow the flow of angular momentum during ultrafast optical demagnetization in a ferrimagnetic iron-gadolinium alloy at the femtoslicing facility of BESSY II. Their results are helpful to understand the fundamental processes and their speed limits. The study is published in Physical Review Letters. [...]

  • <p>A green laser pulse initially excites the electrons in the Cu<sub>2</sub>O; just fractions of a second later, a second laser pulse (UV light) probes the energy of the excited electron.</p>SCIENCE HIGHLIGHT      09.05.2019

    Copper oxide photocathodes: laser experiment reveals location of efficiency loss

    Solar cells and photocathodes made of copper oxide might in theory attain high efficiencies for solar energy conversion. In practice, however, large losses occur. Now a team at the HZB has been able to use a sophisticated femtosecond laser experiment to determine where these losses take place: not so much at the interfaces, but instead far more in the interior of the crystalline material. These results provide indications on how to improve copper oxide and other metal oxides for applications as energy materials. [...]

  • <p>Tomography of a lithium electrode in its initial condition.</p>SCIENCE HIGHLIGHT      06.05.2019

    3D tomographic imagery reveals how lithium batteries age

    Lithium batteries lose amp-hour capacity over time. Microstructures can form on the electrodes with each new charge cycle, which further reduces battery capacity. Now an HZB team together with battery researchers from Forschungszentrum Jülich, the University of Munster, and partners in China have documented the degradation process of lithium electrodes in detail for the first time. They achieved this with the aid of a 3D tomography process using synchrotron radiation at BESSY II (HZB) as well at the Helmholtz-Zentrum Geesthacht (HZG). Their results have been published open access in the scientific journal "Materials Today". [...]

  • <p></p> <p>By co-evaporation of cesium iodide and lead iodide thin layers of CsPbI<sub>3</sub> can be produced even at moderate temperatures. An excess of cesium leads to stable perovskite phases.</p>SCIENCE HIGHLIGHT      29.04.2019

    Inorganic perovskite absorbers for use in thin-film solar cells

    A team at the Helmholtz-Zentrum Berlin has succeeded in producing inorganic perovskite thin films at moderate temperatures using co-evaporation – making post-tempering at high temperatures unnecessary. The process makes it much easier to produce thin-film solar cells from this material. In comparison to metal-organic hybrid perovskites, inorganic perovskites are more thermally stable. The work has been published in Advanced Energy Materials. [...]

  • <p>SnSe is a highly layered orthorhombic structure. SnSe undergoes a phase transition of second order at 500&deg;C with an increase of the crystal symmetry from space group Pnma (left) to Cmcm (right).</p>SCIENCE HIGHLIGHT      24.04.2019

    High-efficiency thermoelectric materials: new insights into tin selenide

    Tin selenide might considerably exceed the efficiency of current record holding thermoelectric materials made of bismuth telluride. However, it was thought its efficiency became enormous only at temperatures above 500 degrees Celsius. Now measurements at the BESSY II and PETRA III synchrotron sources show that tin selenide can also be utilised as a thermoelectric material at room temperature – so long as high pressure is applied. [...]

  • <p>The enzyme MHETase is a huge and complex molecule. MHET-molecules from PET plastic dock at the active site inside the MHETase and are broken down into their basic building blocks.</p>SCIENCE HIGHLIGHT      12.04.2019

    "Molecular scissors" for plastic waste

    A research team from the University of Greifswald and Helmholtz-Zentrum-Berlin (HZB) has solved the molecular structure of the important enzyme MHETase at BESSY II. MHETase was discovered in bacteria and together with a second enzyme - PETase - is able to break down the widely used plastic PET into its basic building blocks. This 3D structure already allowed the researchers to produce a MHETase variant with optimized activity in order to use it, together with PETase, for a sustainable recycling of PET. The results have been published in the research journal Nature Communications. [...]

  • <p>Frederike Lehmann earned an award for her presentation at the annual meeting of the German Society for Crystallography.</p>NEWS      11.04.2019

    PhD student of HZB earns Best Presentation Award of the Young Crystallographers

    Frederike Lehmann received a prize for her presentation at the annual conference of the German Society of Crystallography in Leipzig on 28 March 2019. She is doing her doctorate in the Department of Structure and Dynamics of Energy Materials at the HZB under Prof. Dr. Susan Schorr at the Graduate School HyPerCell. [...]

  • NEWS      08.04.2019

    Register now for the international summer school Quantsol

    It is already the twelfth time that the International Summer School on Photovoltaics and New Concepts of Quantum Solar Energy Conversion (Quantsol) will be held from 1 to 8th September 2019 in Hirschegg, Kleinwalsertal, Austria. The school is organized by the Helmholtz-Zentrum Berlin and the Technical University of Ilmenau. Applications can be submitted through the school’s homepage until June 9th , 2019. [...]

  • <p>The SEM shows Molybdenum sulfide deposited at room temperature.</p>SCIENCE HIGHLIGHT      04.04.2019

    Catalyst research for solar fuels: Amorphous molybdenum sulphide works best

    Efficient and inexpensive catalysts will be required for production of hydrogen from sunlight. Molybdenum sulphides are considered good candidates. A team at HZB has now explained what processes take place in molybdenum sulphides during catalysis and why amorphous molybdenum sulphide works best. The results have been published in the journal ACS Catalysis. [...]

  • <p>At the end of his contribution, Phillippe Wernet makes a great arch from the past (Opticae Thesaurus, 1572) of research with light to the future.</p>SCIENCE HIGHLIGHT      02.04.2019

    HZB contributions to special edition on Ultrafast Dynamics with X-ray Methods

    In the new special issue of the "Philosophical Transactions of the Royal Society of London", internationally renowned experts report on new developments in X-ray sources and ultrafast time-resolved experiments. HZB physicists have also been invited to contribute. [...]

  • NACHRICHT      28.03.2019

    Girls'Day am Helmholtz-Zentrum Berlin

    Mehr als 60 Mädchen haben am 28. März 2019 das Helmholtz-Zentrum Berlin besucht und an verschiedenen Workshops zum Girls'Day teilgenommen. [...]

  • NACHRICHT      27.03.2019

    Veranstaltungshinweis: Theater trifft Wissenschaft am 7. April im Berliner Ensemble

    Wie unterscheiden sich wissenschaftliche Erkenntnisse von bloßen Meinungsäußerungen? Ist die Wissenschaft mitverantwortlich für die zunehmend düsteren Zukunftsszenarien? Der Thementag über Wissenschaft zwischen Misstrauen und Verantwortung verspricht interessante Diskussionen. Mit dabei ist auch der HZB-Forscher Daniel Meza, der beim Science Slam am 7. April ab 14 Uhr auftreten wird. [...]

  • <p>Dr. Godehard W&uuml;stefeld was awarded the Horst Klein Research Prize.</p> <p></p> <p></p>NEWS      25.03.2019

    Godehard Wüstefeld receives the Horst Klein Research Prize

    The physicist Dr. Godehard Wüstefeld was awarded the Horst Klein Research Prize at the annual conference of the German Physical Society. The award recognizes his outstanding scientific achievements in accelerator physics in the development of BESSY II and BESSY VSR. [...]

  • NEWS      25.03.2019

    Recipe book "Sciencefood" available for download

    In the current HZB newspaper "lichtblick" we already advertised our new Sciencefood cookbook. On 60 pages we have published the recipes of our colleagues from all over the world. Whether Pierogi, Quesadillas, Crêpes or Tiramisu: In the recipe book, everyone will find something delicious to cook. The brochure is of course also available for download. [...]

  • NACHRICHT      14.03.2019

    Neuer "lichtblick" erschienen

    Was leistet BESSY II? Und warum braucht die Nutzerschaft mittelfristig eine neue Synchrotron-Quelle? Diese Fragen haben wir Prof. Dr. Jan Lüning, den wissenschaftlichen Geschäftsführer für den Bereich „Materie“ am HZB, gefragt. Lesen Sie das Interview in der aktuellen Ausgabe der „lichtblick“ auf Seite 6. [...]

  • <p>Schematic view of carbon structures with pores.</p>SCIENCE HIGHLIGHT      13.03.2019

    X-ray analysis of carbon nanostructures helps material design

    Nanostructures made of carbon are extremely versatile: they can absorb ions in batteries and supercapacitors, store gases, and desalinate water. How well they cope with the task at hand depends largely on the structural features of the nanopores. A new study from the HZB has now shown that structural changes that occur due to morphology transition with increasing temperature of the synthesis can also be measured directly – using small-angle X-ray scattering. The results have now been published in the journal Carbon. [...]

  • <p>Johannes Sutter received an award for his poster on solarcells at the NIPHO19.</p>NEWS      07.03.2019

    Poster award for Johannes Sutter

    Johannes Sutter, PhD student at HZB, was awarded a poster prize at the "International Conference on Perovskite Solar Cells, Photonics and Optoelectronics (NIPHO19)". The conference took place from 25-27 February 2019 in Jerusalem. [...]

  • <p>Dr. Marcel Risch has been awarded with an ERC Starting Grant and will continue his research at HZB.</p>NEWS      01.03.2019

    Marcel Risch to form research group at the HZB with an ERC Starting Grant

    The Helmholtz-Zentrum Berlin (HZB) will be further strengthened in its research on solar fuels. Dr. Marcel Risch, who recently obtained an ERC Starting Grants, is moving from Georg August Universität, Göttingen to the HZB. Starting in March 2019, the materials physicist will set up his own research group to analyse and improve catalytic materials for water splitting. [...]

  • <p>Facade with integrated CIGS thin-film solar modules at the institute building of the ZSW in Stuttgart.</p>NEWS      28.02.2019

    Thin-film PV is key technology to drive global energy transition

    The German research institutes ZSW and HZB see huge potential in CIGS for both climate and business. CIGS thin-film PV is set to become a key pillar of the global transition towards renewable energy sources. With its high performance, low costs, small carbon footprint, and visual appearance, CIGS has some considerable advantages against other technologies, especially when it comes to highly demanding applications like buildings and vehicles. A new whitepaper compiled by ZSW and HZB describes in detail the benefits of CIGS and the huge business opportunities arising from it. [...]

  • NEWS      28.02.2019

    HZB in pictures - two new movies at the end of the anniversary year

    "You need the courage to develop something you don't know exactly how the end result looks like. That's research and development, otherwise it would just be building." A key sentence Prof. Jens Knobloch says in the new HZB movie. [...]

  • <p>Working in the newly equipped HySPRINT lab for perovskite solar cells: Cooperation opportunities - also in other laboratories and topics - will be presented at the Industry Day.</p>NEWS      22.02.2019

    Industry day with focus on optoelectronics and photovoltaics at HZB in Adlershof

    On 28 March 2019, Helmholtz Zentrum Berlin kindly invites you to an Industry Day in Adlershof. We will provide information on cooperation opportunities and show laboratories that are available for joint research projects. Participants can expect a varied programme on the fields of material and component development, analytics and simulation. The event is free of charge, please register. [...]

  • <p>Water molecules are excited with X-ray light (blue). From the emitted light (purple) information on H-bonds can be obtained.</p>SCIENCE HIGHLIGHT      20.02.2019

    Water is more homogeneous than expected

    In order to explain the known anomalies in water, some researchers assume that water consists of a mixture of two phases even under ambient conditions. However, new X-ray spectroscopic analyses at BESSY II, ESRF and Swiss Light Source show that this is not the case. At room temperature and normal pressure, the water molecules form a fluctuating network with an average of 1.74 ± 2.1% donor and acceptor hydrogen bridge bonds per molecule each, allowing tetrahedral coordination between close neighbours. [...]

  • <p>More than 250 invited guests celebrated the tenth anniversary of HZB on 18 February at the TIPI at the Chancellery.</p>NEWS      18.02.2019

    10 Years of Helmholtz-Zentrum Berlin: A strong partner in the scientific landscape

    Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) is celebrating its tenth anniversary on 18 February 2019 with around 250 invited guests from science, politics and industry. The Centre is one of the world's top institutions and makes a decisive contribution to Berlin as a location for cutting-edge research. This was emphasized by Michael Müller, Governing Mayor of Berlin, in reference to the anniversary. [...]

  • <p>The cones represents the magnetization of the nanoparticles. In the absence of electric field (strain-free state) the size and separation between particles leads to a random orientation of their magnetization, known as superparamagnetism</p>SCIENCE HIGHLIGHT      14.02.2019

    Spintronics by “straintronics”: Superferromagnetism with electric-field induced strain

    Data storage in today’s magnetic media is very energy consuming. Combination of novel materials and the coupling between their properties could reduce the energy needed to control magnetic memories thus contributing to a smaller carbon footprint of the IT sector. Now an international team led by HZB has observed at the HZB lightsource BESSY II a new phenomenon in iron nanograins: whereas normally the magnetic moments of the iron grains are disordered with respect each other at room temperature, this can be changed by applying an electric field: This field induces locally a strain on the system leading to the formation of a so-called superferromagnetic ordered state. [...]

  • NEWS      11.02.2019

    HZB to participate in two Clusters of Excellence

    Scientists at the Helmholtz-Zentrum Berlin (HZB) are researching novel systems of materials that can convert or store energy. The HZB will now also be contributing this expertise to the "MATH+" and "UniSysCat" Excellence Clusters being coordinated by Berlin universities. Over the next three years, the Helmholtz Association will fund HZB's participation under the Helmholtz Excellence Network with a total of 1.8 million euros. [...]

  • <p>New solutions are available to integrate PV into the building skin. One beautiful example is the Copenhagen International School.</p>NEWS      04.02.2019

    Towards the Climate Neutral City: Independent consulting office for integrating photovoltaics into buildings

    The Helmholtz-Zentrum Berlin is opening a national consulting office for integrating photovoltaics into buildings (BAIP) this spring. The consulting office will support building owners, architects, and municipal planners in activating building envelopes for power generation. The project is being funded by the Helmholtz Association over a period of four years as part of its knowledge transfer programme.


  • <p>An extremely thin layer between CIGSe and Perovskite improves the efficiency of the tandemcell.</p>SCIENCE HIGHLIGHT      31.01.2019

    Ultra-thin and extremely efficient: Thin-film tandem cells made of perovskite and CIGSe semiconductors

    An HZB team has fabricated and characterised a thin-film tandem solar cell made of perovskite and CIGSe. They relied on a simple, robust fabrication process that is also suitable for scaling up to large surface areas. The tandem solar cell is a fully thin film device with an impressive efficiency of 21.6 %. With further improvements it might reach efficiencies above 30 %. [...]

  • <p>Summer students 2018</p>NEWS      30.01.2019

    Application open: HZB International Summer Student Programme from 8 July to 30 August 2019

    Eight weeks of research: Take your chance to work on your own research project in close contact with our scientists and get deep insights into the work at the HZB laboratories. Apply now until the 15th of February for the international summer student programme at HZB. [...]

  • <p>Neutrons (red arrows) detect the presence of Lithium ions which have migrated into the silicon anode.</p>SCIENCE HIGHLIGHT      28.01.2019

    Batteries with silicon anodes: Neutron experiments show how formation of surface structures reduces amp-hour capacity

    In theory, silicon anodes could store ten times more lithium ions than graphite anodes, which have been used in commercial lithium batteries for many years. However, the amp-hour capacity of silicon anodes so far has been declining sharply with each additional charge-discharge cycle. Now an HZB team at BER II of the HZB in Berlin and the Institut Laue-Langevin in Grenoble has utilised neutron experiments to establish what happens at the surface of the silicon anode during charging and what processes reduce this capacity. [...]

  • NEWS      21.01.2019

    Postdoc Career Office founded at HZB

    The Helmholtz-Zentrum Berlin is setting up a "Postdoc Career Office" to support postdoctoral researchers in actively planning their future careers. Since 15 January 2019, Dr. Christoph Scherfer has been the contact person for postdocs at the HZB. The Helmholtz Association supports the development of the postdoctoral office at the HZB over a period of five years.    [...]

  • <p>The model refers to a cubic crystal structure (pyrochlore lattice). Not only were magnetic interactions between the nearest neighbours included, but also with the next nearest neighbours (see drawing).</p>SCIENCE HIGHLIGHT      21.01.2019

    New insights into magnetic quantum effects in solids

    Using a new computational method, an international collaboration has succeeded for the first time in systematically investigating magnetic quantum effects in the well-known 3D pyrochlore Heisenberg model. The surprising finding: physical quantum phases are formed only for small spin values. [...]

  • <p class="MsoPlainText">The atmosphere can be compared to a bathtub that can only be filled to its rim if global warming is to be limited to a certain level. We could create another small outward flow with negative emissions. However, there is no way around turning off the tap.</p>SCIENCE HIGHLIGHT      16.01.2019

    Climate change: How could artificial photosynthesis contribute to limiting global warming?

    If CO2 emissions do not fall fast enough, then CO2 will have to be removed from the atmosphere in the future to limit global warming. Not only could planting new forests and biomass contribute to this, but new technologies for artificial photosynthesis as well. An HZB physicist and a researcher at the University of Heidelberg have estimated how much surface area such solutions would require. Although artificial photosynthesis could bind CO2 more efficiently than the natural model, there are still no large modules that are stable over the long term. The team published their calculations in "Earth System Dynamics".


  • NEWS      15.01.2019

    Two new Helmholtz Young Investigator Groups will start in 2019

    Starting in 2019, Helmholtz-Zentrum Berlin (HZB) will be establishing two new Helmholtz Young Investigator Groups and thereby strengthening its competencies in catalysis research. The Helmholtz Association will be funding each group with 150,000 euros annually over a period of five years, and HZB will be matching that sum with its own funds. [...]

  • <p>Marcus B&auml;r, here in EMIL lab at HZB, has accepted a professorship at FAU in South-Germany.</p>NEWS      11.01.2019

    Marcus Bär accepts W2 professorship for X-ray spectroscopy in Erlangen-Nuremberg

    Prof. Marcus Bär has accepted a professorship for X-ray spectroscopy at the Friedrich-Alexander Universität Erlangen-Nürnberg (FAU). Bär heads the Department of Interface Design at Helmholtz-Zentrum Berlin (HZB). The new W2 professorship was established in cooperation with HZB and Forschungszentrum Jülich in order to strengthen the Helmholtz-Institute Erlangen-Nürnberg für Renewable Energy (HI ERN). In the future, Bär will also be working on HI ERN research topics at HZB, thereby contributing to the intensification of cooperation. [...]

  • <p>(a) Neutronen-Eigenspannungsmessung an einer Schwei&szlig;probe aus handels&uuml;blichen Stahl, (b) Magnetfeldmessung, (c) Schwei&szlig;nahtquerschliff.</p>SCIENCE HIGHLIGHT      21.12.2018

    Neutronenforschung hilft bei der Entwicklung von zerstörungsfreien Prüfverfahren

    Materialermüdung zeigt sich häufig zuerst daran, dass im Innern des Materials Bereiche mit stark unterschiedlichen Eigenspannungen aneinandergrenzen. An der Neutronenquelle BER II am HZB hat ein Team der Bundesanstalt für Materialforschung und –prüfung (BAM) die Eigenspannungen von Schweißnähten aus ferromagnetischem Stahl analysiert. Die Ergebnisse helfen zerstörungsfreie elektromagnetische Prüfverfahren zu verbessern. [...]

  • <p>Lena Gra&szlig; has received an award by GBM for her master thesis.</p>NEWS      20.12.2018

    Outstanding master thesis on the structure and function of a bacterial enzyme honoured

    On December 17, 2018, Lena Graß, a PhD student from the Structural Biochemistry Group at Freie Universität Berlin, was awarded the Master Prize of the Gesellschaft für Biochemie und Molekularbiologie e.V. (Society for Biochemistry and Molecular Biology) (GBM). For her master thesis at Freie Universität Berlin and the MX beamlines of BESSY II, she deciphered the structure and function of a so-called RNA helicase. [...]

  • <p>Marko Topic, Bernd Rech, Janez Krc, Benjamin Lipovsek, Steve Albrecht, Marko Jost, Borut Pahor (f.l.t.r)</p>NEWS      19.12.2018

    Slovenian president awards HZB scientist with "Apple of Inspiration"

    Marko Jošt, Steve Albrecht and Bernd Rech, researchers at the Helmholtz-Zentrum Berlin (HZB) and the Technische Universität Berlin (TUB) receive a rare award today, 19 December 2018. In the slovenian Grand Hall of Presidential Palace, the Slovenian President, Borut Pahor, presents them with the "Apple of Inspiration". It honours achievements in culture, science, sport and society. The Berlin scientists are the first foreigners who receive the prize together with colleagues from the University of Ljubljana. [...]

  • <p>Steve Albrecht is heading the junior investigator group "Perovskit Tandem Solar Cells" at the HZB.</p>NEWS      19.12.2018

    Steve Albrecht is Junior Professor at the Technical University of Berlin

    The Technische Universität Berlin (TU) and the Helmholtz-Zentrum Berlin (HZB) have appointed Prof. Dr. Steve Albrecht to the joint junior professorship "perovskite solar cells" as of December 15, 2018. Since 2016, Albrecht has headed the junior investigator group "Perovskit Tandem Solar Cells" at the HZB, which is funded by the Federal Ministry of Education and Research.


  • <p>The Ernst Eckhard Koch Prize went to Dr. Victoriia Saveleva (right) for her work on catalysts.</p>NEWS      12.12.2018

    Ernst Eckhard Koch Prize and Synchrotron Radiation Innovation Award

    On December 6, 2018, the Association of Friends of Helmholtz-Zentrum Berlin awarded the Ernst Eckhard Koch Prize for an outstanding doctoral thesis in the field of research with synchrotron radiation at the HZB or at DESY as well as the European Innovation-Award on Synchrotron Radiation. The award ceremonies took place during the 10th User Meeting at the HZB. [...]

  • <p>Photocathode in superconducting photoinjector system.</p>SCIENCE HIGHLIGHT      07.12.2018

    Milestone for bERLinPro: photocathodes with high quantum efficiency

    A team at the HZB has improved the manufacturing process of photocathodes and can now provide photocathodes with high quantum efficiency for bERLinPro. [...]

  • <p>In September Bahrdt and team could insert the CPMU17 undulator in the storage ring in order to provide synchrotron light for EMIL.</p>PORTRAIT      06.12.2018

    Key competencies for BESSY III: Undulators

    HZB undulators are not only used in the BESSY II synchrotron lightsource. They also enjoy great popularity at other large-scale research facilities. HZB has already supplied undulators to renowned centres such as the Paul Scherrer Institute in Switzerland, DESY in Hamburg, and MAX IV in Sweden. Undulators are key components in the operation of synchrotron lightsources. [...]

  • <p>Lively discussions in the evening events - a tradition at the usermeetings.</p>NEWS      05.12.2018

    BER II und BESSY II: 10. User meeting at HZB

    More than 400 scientists have registered this year for the 10th BER II and BESSY II User Meeting at the HZB. Manufacturers of precision instruments present their products at 52 stands. The conference will run from Wednesday, December 5 to Friday, December 7, 2018. On Thursday, the HZB Circle of Friends will reward outstanding scientists in the field of synchrotron radiation with the Innovation Award and bestow the Ernst Eckard Koch Prize for the best doctoral thesis. [...]

  • <p>From left to right: Prof. Dr. Jan L&uuml;ning (HZB, design. GF), Dr. Roland Steitz (HZB), H.E. Dr. Khaled TOUKAN (Chairman of Jordan Atomic Energy Commission), Dr. Antje Vollmer (HZB), Mr Akram Hayjeneh (Jordan Embassy in Berlin), Dr. Samer Kahook (Manager of JRTR Jordan Atomic Energy Commission).</p>NEWS      04.12.2018

    Delegation from Jordan visited the HZB

    The Helmholtz-Zentrum Berlin (HZB) will intensify its cooperation with Jordanian large-scale research facilities. This was agreed between Prof. Dr. Jan Lüning and representatives of a high-ranking Jordanian research delegation, which visited the HZB at the end of November 2018.  [...]

  • <p>With a complex combination of semiconductors and catalysts, light can be used to produce the solar fuel hydrogen.</p>NEWS      28.11.2018

    Public Lecture: “From Sunlight to Chemical Fuels: Towards a Clean Energy Future".

    On 11 December 2018, the Embassy of the Kingdom of the Netherlands in Berlin, together with the Technical University of Delft, invites you to the "Karel Luyben Lecture". Professor Dr. Roel van de Krol will give an insight into storing solar energy in solar fuels. Registration for the event is open until 4.12. [...]

  • NACHRICHT      28.11.2018

    Video: Was machen eigentlich Metallographen?

    „Am Helmholtz-Zentrum Berlin kommen wir an die richtig krassen Elektronenmikroskope ran“, sagt Toni. Er ist gelernter Metallograph und erklärt im Video des LETTE Vereins Berlin, was man in dem Beruf alles können muss und welche Werkzeuge dafür nötig sind. [...]

  • <p><span>The APPLE II UE56 double undulator generates brilliant light with variable polarization.</span></p>NEWS      26.11.2018

    HZB builds undulator for SESAME in Jordan

    The Helmholtz-Zentrum Berlin is building an APPLE II undulator for the SESAME synchrotron light source in Jordan. The undulator will be used at the Helmholtz SESAME beamline (HESEB) that will be set up there by five Helmholtz Centres. The Helmholtz Association is investing 3.5 million euros in this project coordinated by DESY. [...]

  • <p>The molecule organises itself on the electrode surface until a dense, uniform monolayer is formed.</p>SCIENCE HIGHLIGHT      23.11.2018

    Molecules that self-assemble into monolayers for efficient perovskite solar cells

    A team at the HZB has discovered a new method for producing efficient contact layers in perovskite solar cells. It is based on molecules that organise themselves into a monolayer. The study was published in Advanced Energy Materials and appeared on the front cover of the journal. [...]

  • <p>New at HZB: DAAD MOPGA Fellow Dr. Yutsung Tsai.</p>NEWS      22.11.2018

    "Make our Planet great again": New Research Group at the HZB institute of Silicon Photovoltaics

    The physicist Dr. Yutsung Tsai is setting up his own research group on  at the Institute of Silicon Photovoltaics at Helmholtz-Zentrum Berlin. His goal is to develop two-dimensional transparent solar cells. Tsai receives research funding from the Franco-German programme "Make Our Planet Great Again – German Research Initiative“ (MOPGA-GRI), which is funded by the German Ministry or Education and Research.  [...]

  • NEWS      20.11.2018

    User operation restarted at BESSY II

    On 20 November 2018, user operation of BESSY II restarted after a longer shutdown and maintenance period. The electron storage ring was shut down on July 30, 2018 to install or replace important components. [...]

  • <p>Prof. Efim Gluskin headed the accelerator physics department at Advanced Photon Source from 2004 to 2010 and continues to be active in undulator development.</p>NEWS      20.11.2018

    D-Lecture on 30th November 2018: Undulators for existing and future light sources

    Prof. Efim Gluskin from the Argonne National Laboratory will present on 30th November 2018 his thoughts on Undulators for existing and future light sources. After the presentation we will have time for informal discussion with "mulled wine and gingerbread" in the BESSY foyer. [...]

  • <p>From left to right: The DTG board, Prof. E. M&uuml;ller (DLR) and Dipl.-Ing. N. Katenbrink (company Quick-Ohm) present the Young Scientist Prize to Alexander Petsch (HZB), whose work was supervised by Dr. K. Fritsch and PD Dr. K. Habicht (both HZB).</p>NEWS      19.11.2018

    Alexander Petsch awarded the Young Investigators Prize of the German Thermoelectric Society

    Alexander Petsch from the HZB Department Methods and Characterization of Transport Phenomena in Energy Materials was awarded the Young Scientist Prize 2018 of the German Thermoelectrics Society e.V. (DTG) for his outstanding Bachelor thesis. [...]

  • <p>The illustration shows a molecule with an iron atom at its centre, bound to 4 CN groups and a bipyridine molecule. The highest occupied iron orbital is shown as a green-red cloud. As soon as a cyan group is present, the outer iron orbitals are observed to delocalize so that electrons are also densely present around the nitrogen atoms.</p> <p></p>SCIENCE HIGHLIGHT      14.11.2018

    Transition metal complexes: mixed works better

    A team at BESSY II has investigated how various iron-complex compounds process energy from incident light. They were able to show why certain compounds have the potential to convert light into electrical energy. The results are important for the development of organic solar cells. The study has now been published in the journal PCCP, and its illustration selected for the cover. [...]

  • NACHRICHT      12.11.2018

    Veranstaltungstipp: Theaterstück Kernfragen über Lise Meitner am 13.11.2018

    Am 13. November 2018 wird an der Freien Universität ein Theaterstück zu Lise Meitner uraufgeführt, das durch das PORTRAITTHEATER aus Wien realisiert wird. Das Stück "KERNFRAGEN" basiert auf dokumentarischem Material, unter anderem dem umfangreichen Briefwechsel zwischen Lise Meitner und Max von Laue, der bislang wenig öffentlich bekannt ist. Der Eintritt ist frei, um Anmeldung wird gebeten. [...]

  • <p>The SEM image shows the cross-section of a silicon perovskite tandem solar cell.</p>SCIENCE HIGHLIGHT      12.11.2018

    New records in perovskite-silicon tandem solar cells through improved light management

    Using microstructured layers, an HZB team has been able to increase the efficiency of perovskite-silicon tandem solar cells, achieving 25.5 %, which is the highest published value to date. At the same time, computational simulations were utilized to investigate light conversion in various device designs with different nanostructured surfaces. This enabled optimization of light management and detailed energy yield analyses. The study has now been published in Energy & Environmental Science. [...]

  • <p>The data show that In the case of the two-layer graphene, a flat part of bandstructure only 200 milli-electron volts below the Fermi energy.</p>SCIENCE HIGHLIGHT      10.11.2018

    Graphene on the way to superconductivity

    Scientists at HZB have found evidence that double layers of graphene have a property that may let them conduct current completely without resistance. They probed the bandstructure at BESSY II with extremely high resolution ARPES and could identify a flat area at a surprising location. [...]

  • <p>Computer scientist Andreas Maier, materials researcher Silke Christiansen and medical expert Georg Schett have been awarded with an ERC Synergy Grant. </p>NEWS      23.10.2018

    ERC Synergy grant with HZB participation

    Novel X-ray microscope to produce microstructural images in situ and in vivo [...]

  • <p>Andriy Zakutayev (NREL), member of the jury, has awarded Fredrike Lehmann for her poster at ICTMC-21 in Boulder, Colorado, USA.</p>NEWS      19.10.2018

    Poster award to HZB doctoral student

    Frederike Lehmann from the HZB Department Structure and Dynamics of Energy Materials received a poster award at an international conference, the ICTMC-21 in Boulder, Colorado, USA. She presented her results on the synthesis and characterization of hybrid perovskite materials, which are considered interesting candidates for novel solar cells. [...]

  • <p>Doped Diamond Foam. </p>SCIENCE HIGHLIGHT      18.10.2018

    Nanodiamonds as photocatalysts

    Diamond nanomaterials are considered hot candidates for low-cost photocatalysts. They can be activated by light and can then accelerate certain reactions between water and CO2 and produce carbon-neutral "solar fuels". The EU project DIACAT has now doped such diamond materials with boron and shown at BESSY II how this could significantly improve the photocatalytic properties. [...]

  • <p>Prof. Dr. Andrea Denker is the head of the department "Proton Therapy" at HZB. </p>NEWS      16.10.2018

    Andrea Denker is Professor of "Accelerator Physics for Medicine"

    The Beuth Hochschule für Technik Berlin and the Helmholtz-Zentrum Berlin (HZB) have appointed Prof. Dr. Andrea Denker to the joint professorship "Accelerator Physics for Medicine" as of October 1, 2018. Since 2006, Andrea Denker is head of the department "Proton Therapy" at the HZB, which operates the accelerator for eye tumor therapy. The therapy, offered in cooperation with the Charité - Universitätsmedizin Berlin and the HZB, is unique in Germany. [...]

  • <p>The STM image shows blue phosphorus on a gold substrate. The calculated atomic positions of the slightly elevated P atoms are shown in blue, the lower lying ones in white. Groups of six elevated P atoms appear as triangles. </p>
<p><strong> </strong></p>SCIENCE HIGHLIGHT      15.10.2018

    Blue phosphorus - mapped and measured for the first time

    Until recently, the existence of "blue" phosphorus was pure theory: Now an HZB team was able to examine samples of blue phosphorus at BESSY II for the first time and confirm via mapping of their electronic band structure that this is actually this exotic phosphorus modification. Blue phosphorus is an interesting candidate for new optoelectronic devices. The results have been published in Nano Letters. [...]

  • <p>John Uhlrich, Editor-in-Chief at Wiley VCH presented an award to Quentin Jeangros, EPFL, and Eike K&ouml;hnen, HZB, for their outstanding posters (from left to right).  </p>NEWS      12.10.2018

    Poster award for HZB PhD student

    Eike Köhnen received an award for his poster on perovskite silicon tandem cells at the 4th International Conference on Perovskite Solar Cells and Optoelectronics (PSCO) in Lausanne, Switzerland. He is a PhD student in the Junior Research Group on Perovskite Tandem Cells led by Dr. Steve Albrecht. [...]

  • NACHRICHT      10.10.2018

    Am 15. Oktober startet die Ringvorlesung der Freien Universität Berlin– Zum Gedenken an Lise Meitner

    Lise Meitner ist eine der bedeutendsten Wissenschaftlerinnen des 20. Jahrhunderts. Die Freie Universität Berlin würdigt im Rahmen einer Ringvorlesung die Leistungen Lise Meitners und arbeitet deren Bedeutung für die Wissenschaft und Kultur auf. Die Veranstaltung findet immer montags von 18.15 bis 19.45 Uhr statt, Beginn ist am 15. Oktober. [...]

  • <p>The theory group with Joe Dzubiella. </p>NEWS      08.10.2018

    Collaboration between HZB and the University of Freiburg

    Through a Joint Research Group entitled “Simulation of Energy Materials“ Prof. Joachim Dzubiella of the Albert-Ludwigs-Universität, Freiburg will be able to continue his collaboration with the HZB. The theoretical physicist headed the “Theory and Simulation“ group at the HZB until recently and worked closely together with colleagues conducting experimental research. The new research group will concentrate on electrochemical energy storage and solar fuels. [...]

  • <p>Shown are the magnetic fluxlines inside a superconducting sample of lead in two different directions. The scale bar is 5 mm. </p>SCIENCE HIGHLIGHT      02.10.2018

    Neutrons scan magnetic fields inside samples

    With a newly developed neutron tomography technique, an HZB team has been able to map for the first time magnetic field lines inside materials at the BER II research reactor. Tensorial neutron tomography promises new insights into superconductors, battery electrodes, and other energy-related materials. [...]

  • <p>Principle of a silicon singlet fission solar cell with incorporated organic crystalls<br /></p>SCIENCE HIGHLIGHT      02.10.2018

    HZB researchers boost the efficiency of silicon solar cells

    The efficiency of a solar cell is one of its most important parameters. It indicates what percentage of the solar energy radiated into the cell is converted into electrical energy. The theoretical limit for silicon solar cells is 29.3 percent due to physical material properties. In the journal Materials Horizons, researchers from Helmholtz-Zentrum Berlin (HZB) and international colleagues describe how this limit can be abolished. The trick: they incorporate layers of organic molecules into the solar cell. These layers utilise a quantum mechanical process known as singlet exciton fission to split certain energetic light (green and blue photons) in such a way that the electrical current of the solar cell can double in that energy range. [...]

  • <p>Photo: HZB/J. Bierbaum</p>NEWS      28.09.2018

    Scientific delegation from China visited the HZB

    On 28 September 2018, a 25-member delegation from China gathered information about materials research at the Helmholtz Zentrum Berlin. Representatives from various research institutes, universities and industrial companies visited the Lise-Meitner Campus in Wannsee and had discussions with the HZB researchers. [...]

  • <p>Milena Meschenmoser completed the best apprenticeship of her year. After finishing her training as a precision mechanic, she now has new plans.</p>NEWS      28.09.2018

    Berlin’s best apprentice for precision mechanic comes from the HZB

    Milena Meschenmoser completed her apprenticeship as a precision mechanic as the best in Berlin. From 2014 to 2018, she completed the practical part of her training at the HZB workshop in Wannsee. [...]

  • <p>The computer simulation shows how the electromagnetic field is distributed in the silicon layer with hole pattern after excitation with a laser. Here, stripes with local field maxima are formed, so that quantum dots shine particularly strongly. Picture. C. Barth/HZB</p>SCIENCE HIGHLIGHT      28.09.2018

    Machine learning helps improving photonic applications

    Photonic nanostructures can be used for many applications, not just in solar cells, but also in optical sensors for cancer markers or other biomolecules, for example. A team at HZB using computer simulations and machine learning has now shown how the design of such nanostructures can be selectively optimised. The results are published in Communications Physics. [...]

  • <p>Monthly news from HZB - via email newsletter.</p>SCIENCE HIGHLIGHT      24.09.2018

    Newsletter and Highlightreport

    Exactly twenty years ago, BESSY II went into operation. In the current September newsletter, which we are sending out this week, we present the anniversary website, report on the new highlight report 2017 and on successes in technology transfer. Have you already registered for the newsletter? Here is the registration link. [...]

  • NEWS      24.09.2018

    Atoosa Meseck is a professor of accelerator physics at the University of Mainz

    On 1 September 2018, Johannes Gutenberg University Mainz appointed Atoosa Meseck to the joint professorship “Accelerator physics – collective effects and nonlinear beam dynamics”. Prof. Dr. Atoosa Meseck is researching at HZB into novel concepts for undulators, as are indispensable for producing high brightness synchrotron radiation. Among other things, she is developing undulator concepts for the successor facility BESSY III, for which the concept is currently being developed at HZB. [...]

  • <p>A heavy-duty crane lifted the undulator from the testing hall onto a truck, which transported it to the truck sluice of the experimental hall. </p>NEWS      21.09.2018

    Spectacular transport: Undulator moved to the electron storage ring BESSY II

    A worldwide unique undulator developed at Helmholtz-Zentrum Berlin (HZB) was installed in the storage ring BESSY II on September 20, 2018. It supplies the "Energy Materials In-Situ Lab EMIL" with the hard X-ray light from BESSY II. The transport of the six-ton device was spectacular: several cranes were used to transport the undulator just a few hundred meters from the production building to the storage ring. [...]

  • <p>The nanostructure for capturing light is imprinted on silicon oxide (blue) and then "levelled" with titanium oxide (green). The result is an optically rough but smooth layer on which crystalline silicon can be grown.</p>SCIENCE HIGHLIGHT      17.09.2018

    Patented nanostructure for solar cells: Rough optics, smooth surface

    Thin-film solar cells made of crystalline silicon are inexpensive and achieve efficiencies of a good 14 percent. However, they could do even better if their shiny surfaces reflected less light. A team led by Prof. Christiane Becker from the Helmholtz-Zentrum Berlin (HZB) has now patented a sophisticated new solution to this problem. [...]

  • <p>Alejandra Villanueva Tovar, Pavlo Perkhun, Erin Looney, Tom Veeken, Gizem Birant, Harald Reinhold (from left) have been awarded with an HQCQ 2018. </p>NEWS      09.09.2018

    Hanwha Q-Cells Quantsol Awards 2018

    Six young researchers received a Hanwha Q-Cells Quantsol Award for their self-developed Photovoltaics. This award is presented by the organizers of the international summer school Quantsol together with the industry. [...]

  • NACHRICHT      04.09.2018

    Neue HZB-Zeitung „lichtblick“ erschienen

    Das Potenzial der Solarenergie ist längst nicht ausgereizt. Es gibt viele Stellschrauben, um den Wirkungsgrad weiter zu erhöhen. So beschichtet Christiane Becker Gläser mit winzigen Strukturen, um den Lichteinfang in Solarzellen zu erhöhen – eine Technologie, die auch für die Industrie höchst interessant ist. In der Titelgeschichte der neuen "lichtblick" stellen wir die Physikerin vor, die sich beinahe für eine Laufbahn als Musikerin entschieden hätte. Bis sie auf das Thema der Erneuerbaren Energien stieß. [...]

  • NEWS      03.09.2018

    The HZB welcomes new apprentices and students

    On September 3, 2018, 14 new colleagues who are undertaking an apprenticeship, a dual course of study or a voluntary scientific year at the HZB officially started their careers. [...]

  • <p>HZB/P. Dera</p>NEWS      29.08.2018

    Invitation to the final presentations of HZB Summer Students on 30th August

    The summer students worked on their own research projects for eight weeks. August 30th is their last day at HZB. We cordially invite you to the final presenation event at Campus Wannsee. Three selected students will give a lecture on their research projects. Afterwards, the students will be glad to report on the results and progress of their work in a poster session. Just drop by without registering - we look forward to seeing you! [...]

  • <p>Anja Karliczek, Federal Minister of Education and Research, visited the HZB student laboratory exhibit. Photo: BMBF</p>NEWS      27.08.2018

    Shaking hands and experimenting with the Federal Research Minister

    Federal Research Minister Anja Karliczek visited the tent of the school laboratories in the Helmholtz Association at the German government's Open Day this weekend. Employees of the Alfred Wegener Institute, DESY and HZB experimented with the visitors at the invitation of the BMBF. "We have two great days behind us with many interesting encounters, curious children and lots of action," says Dr. Ulrike Witte from the HZB school laboratory. [...]

  • <p>View into the new HySPRINT laboratory at HZB, where perovskit solar cells can be produced and tested. Photo: HZB/M. Setzpfandt</p>NEWS      24.08.2018

    2.8 Mio Euro Funding for preparing perovskite solar cells for high volume manufacturing

    HZB participates in a new consortium for Perovskite solar technology that is led by Oxford PV Germany GmbH. The consortium is funded by the German Ministry of Economics and Energy with 2.8 Million Euros and aims to further demonstrate the manufacturability of perovskite-silicon tandem solar cells. [...]

  • <p>The HySPRINT logo (Helmholtz Innovation Lab) printed on a copper solution symbolizes how the thinnest material layers can be produced simply and cost-effectively. Possible applications are solar cells, organic LEDs or transistors. Photo </p>NEWS      22.08.2018

    Printing solar cells and organic LEDs

    Humboldt-Universität zu Berlin and Helmholtz-Zentrum Berlin form a joint lab and research group “Generative production processes for hybrid components”. [...]

  • <p>The laser pulse (red) generates heat in the thin-film system. The physical mechanisms by which the heat is distributed can be analysed by temporally resolved X-ray diffraction experiments. </p>SCIENCE HIGHLIGHT      21.08.2018

    Future information technologies: nanoscale heat transport under the microscope

    A team of researchers from the Helmholtz-Zentrum Berlin (HZB) and the University of Potsdam has investigated heat transport in a model system comprising nanometre-thin metallic and magnetic layers. Similar systems are candidates for future high-efficiency data storage devices that can be locally heated and rewritten by laser pulses (Heat-Assisted Magnetic Recording). Measurements taken with extremely short X-ray pulses have now shown that the heat is distributed a hundred times slower than expected in the model system. The results are published in Nature Communications. [...]

  • NEWS      14.08.2018

    Register now: Newsletter from HZB

    On Thursday evening we will send out the next newsletter with information from the HZB. The focus topic in August is BESSY II and the expansion to BESSY VSR. According to the new data protection guidelines, we may only send the newsletter to persons who have registered. And what about you? Did you just subscribe? Here is the registration link. [...]

  • NEWS      10.08.2018

    Summer in the lab - and in the HZB science blog

    They come from Egypt, China, Mexico or Russia and study science or technology in Bachelor's or Master's degrees. For eight weeks our summer students participate in research in an HZB team. But are they doing exactly? They are currently blogging about their projects in the HZB-Scienceblog. [...]

  • <p>Granules of aluminium (grey) become a metallic foam when heated.The tompgraphies document the evolution of pores with time. </p>SCIENCE HIGHLIGHT      08.08.2018

    World record: Fastest 3D tomographic images at BESSY II

    An HZB team has developed an ingenious precision rotary table at the EDDI beamline at BESSY II and combined it with particularly fast optics. This enabled them to document the formation of pores in grains of metal during foaming processes at 25 tomographic images per second - a world record. [...]

  • <p>The analysed perovskite cell has a surface of 1 cm<sup>2</sup>. Credit. Uni Potsdam</p>SCIENCE HIGHLIGHT      01.08.2018

    Insight into loss processes in perovskite solar cells enables efficiency improvements

    In perovskite solar cells, charge carriers are mainly lost through recombination occurring at interface defect sites. In contrast, recombination at defect sites within the perovskite layer does not limit the performance of the solar cells at present. Teams from the University of Potsdam and the Helmholtz-Zentrum Berlin (HZB) were able to reach this interesting conclusion through extremely accurate quantitative measurements on 1 cm2 perovskite cells using photoluminescence. Their results contribute to improving  perovskite solar cells and have now been published in Nature Energy. [...]

  • <p>Manganese compounds also play a role as catalysts in photosynthesis. </p>SCIENCE HIGHLIGHT      31.07.2018

    Insight into catalysis through novel study of X-ray absorption spectroscopy

    An international team has made a breakthrough at BESSY II. For the first time, they succeeded in investigating electronic states of a transition metal in detail and drawing reliable conclusions on their catalytic effect from the data. These results are helpful for the development of future applications of catalytic transition-metal systems. The work has now been published in Chemical Science, the Open Access journal of the Royal Society of Chemistry. [...]

  • <div id="infowindow_7baf4b2e2c_2d5f6a_2d11d2_2d8f20_2d0000c0e166dc_7d" class="infowindow_7baf4b2e2c_2d5f6a_2d11d2_2d8f20_2d0000c0e166dc_7d infoValueContainer">
<div class="readOnlyInfoValue">The experimental Hall of BESSY II. HZB / D.Butensch&ouml;n&nbsp;</div>
</div>NEWS      30.07.2018

    Shutdown BESSY II: work has started

    As of 30 July 2018, BESSY II will be down for several weeks. In the summer shutdown, important components in the storage ring tunnel will be replaced and overhauled. The first conversion work for the BESSY VSR project also begins.  Upgrading BESSY II into a variable-pulse-length storage ring (BESSY-VSR) will provide unique experimental conditions for researchers worldwide. The shutdown lasts until 30 September 2018, and user operation will recommence on 30 October 2018. [...]

  • <p>Antonio Abate is an internationally renowned perovskite researcher. </p>NEWS      27.07.2018

    ERC Starting Grant awarded to Antonio Abate

    HZB scientist Dr. Antonio Abate has been awarded an ERC Starting Grant for his research project on perovskite solar cells. The ERC Starting Grant supports outstanding researchers in an early phase of their scientific careers with up to 1.5 million euros over five years and is considered one of the most important European awards. [...]

  • <div class="ce__subline ce__subline--black font--h7">&Uuml;bergabe der Technologieberichte an den parlamentarischen Staatssekret&auml;r Thomas Barei&szlig; (BMWi) durch Prof. Dr.-Ing. Manfred Fischedick und Dr. Peter Viebahn, (Wuppertal Institut) sowie Prof. Dr. Martin Wietschel (Fraunhofer ISI) und Juri Horst (IZES gGmbH). Quelle: Susanne Eriksson/BMWi</div>
<div class="ce__data-full"></div>SCIENCE HIGHLIGHT      26.07.2018

    Wissenstransfer: Neues Standardwerk zu Energietechnologien in Deutschland

    Vertreter des Wuppertal Instituts haben dem Bundesministerium für Wirtschaft und Energie (BMWi) einen mehrbändigen Bericht zu Energietechnologien übergeben. Dabei haben Experten aus dem HZB-Institut PVcomB am Themenfeld Photovoltaik mitgewirkt. Im Herbst verabschiedet die Bundesregierung das neue 7. Energieforschungsprogramm (EFP). Der Bericht liefert eine wissenschaftliche Basis für die Entwicklung des Programms. [...]

  • NEWS      26.07.2018

    HZB Newsletter in english now

    You can now register to receive the monthly HZB Newsletter automatically by email. It always contains two or three science features from research activities, information on personnel matters, and video and reading tips such as links to profiles and news reports from the HZB newspaper Lichtblick, the Campus Blog, and the Science Blog. [...]

  • <p>With this experiment, the team could observe how magnetic order is changed by sudden heat.</p>SCIENCE HIGHLIGHT      16.07.2018

    Future information technology: Microscopic insight into processes when magnets suddenly heat up

    Magnetic solids can demagnetize upon heating. Despite decades of research, it has so far been unclear how this process works in detail. Now, for the first time, an international group has observed in a step-by-step manner how sudden heating affects the magnetic order of a ferrimagnetic insulator. The result: The magnetic order changes on two time scales. The first process is surprisingly fast and takes only one picosecond, while the second process takes 100,000 times longer. This insight could help to increase the switching speed in magnetic storage media by at least a factor of 1000.  The work is published in Science Advances. [...]

  • <p>Katherine Ann Mazzio was awarded for her poster contribution at the ICT2018 in Caen.</p>NEWS      15.07.2018

    Poster award für HZB scientist at ICT2018

    At the International Conference on Thermoelectrics in July in Caen, France, Dr. Katherine Ann Mazzio from the HZB Institute of Nanospectroscopy received a prize for her poster. The conference is the world's largest symposium on thermoelectric materials. [...]

  • <p>Weitere Informationen finden Sie hier: https://bvmatwerk.de</p>NACHRICHT      13.07.2018

    Bundesvereinigung Materialwissenschaft und Werkstofftechnik wählt Susan Schorr zur Generalsekretärin

    Auf der letzten Mitgliederversammlung der Bundesvereinigung Materialwissenschaft und Werkstofftechnik (BVMatWerk) wurde Prof. Dr. Susan Schorr einstimmig zur Generalsekretärin gewählt. Sie tritt das Amt ab 2019 an, die Amtszeit dauert zwei Jahre. [...]

  • <p>Participants from partner institutions at the GRECO kick off in Madrid on 25. June 2018.</p>NEWS      11.07.2018

    GRECO kick-off in Madrid: advancing photovoltaics through “open science”

    The Helmholtz-Zentrum Berlin (HZB) is one of ten international partners in the GRECO pilot project funded under the European Union framework programme Horizon 2020. They intend to jointly test OpenScience approaches for exchanging knowledge and research data in order to accelerate the development of innovative PV products worldwide. GRECO will receive three million euros in funding through 2021. [...]

  • <p>The homepage: <a href="http://grafox.pdi-berlin.de/">http://grafox.pdi-berlin.de/</a></p>NEWS      10.07.2018

    HZB expert contributes to Leibniz platform GraFOx

    The platform "GraFOx" of the Leibniz Association bundles the activities and competences of Berlin research institutes and universities in the field of oxide research for electronic applications. Now Prof. Dr. Catherine Dubourdieu has been involved as an Associate Partner. The internationally renowned expert heads the Institute "Functional Oxides for Energy-Efficient Information Technology" at the Helmholtz-Zentrum Berlin. [...]

  • <p>Nils M&aring;rtensson, University of Uppsala, cooperates closely with HZB.<strong><br /></strong></p>NEWS      09.07.2018

    Helmholtz International Fellow Award for Nils Mårtensson

    The Helmholtz Association has presented the Swedish physicist Nils Mårtensson with a Helmholtz International Fellow Award.  The synchrotron expert of the University of Uppsala, who heads the nobel comitee for physics, cooperates closely with the HZB-Institute Methods and Instrumentation for Synchrotron Radiation Research. [...]

  • <p>21 students from all over the world will work on their research projects during summer at HZB. </p>NEWS      09.07.2018

    Summer in the laboratory: 21 summer students start their research project at the HZB

    Young people from all over the world have applied to the Helmholtz Centre to take part in the annual summer programme: eight weeks of research in an HZB team, well supervised, taking their first steps in their own scientific work. Now 21 students from eleven countries have arrived and are looking forward to their research project.  They will present their results on 30 August. [...]

  • <p>The transparent anti-corrosion layer contains Rhodium nanoparticles as a catalyst. Credit ACS Energy Letters.</p>SCIENCE HIGHLIGHT      05.07.2018

    New world record for direct solar water-splitting efficiency

    Hydrogen will play a central role as a storage medium in sustainable energy systems. An international team of researchers has now succeeded in raising the efficiency of producing hydrogen from direct solar water-splitting to a record 19 per cent. They did so by combining a tandem solar cell of III-V semiconductors with a catalyst of rhodium nanoparticles and a crystalline titanium dioxide coating. Teams from the California Institute of Technology, the University of Cambridge, Technische Universität Ilmenau, and the Fraunhofer Institute for Solar Energy Systems ISE participated in the development work. One part of the experiments took place at the Institute for Solar Fuels in the Helmholtz-Zentrum Berlin. [...]

  • <p>Zum <a href="http://www.spektrum.de/aktion/energiewende" class="Extern">Download des Spektrum Kompakt</a></p>NACHRICHT      05.07.2018

    Kostenloser Download: HZB-Forschung in Spektrum Kompakt

    Noch bis zum 9. Juli steht das Spektrum Kompakt "Energiewende", herausgegeben vom Spektrum-Verlag, zum kostenlosen Download zur Verfügung. Darin enthalten ist eine 13-seitige Sonderveröffentlichung des HZB, aufgeteilt in drei Beiträge. Nach Ablauf des kostenlosen Zugangs wird der Download des Hefts auf den Spektrum-Seiten 4,99 € kosten. [...]

  • <p>Certificate ceremony in Berlin: Family Minister Dr. Franziska Giffey and the managing directors of the non-profit Hertie Foundation and berufundfamilie Service GmbH presented the award. </p>NEWS      29.06.2018

    Helmholtz Zentrum Berlin receives "audit berufundfamilie" certificate

    On 27 June 2018 in Berlin, the HZB was awarded the "audit berufundfamilie" certificate for its strategically designed family and life-phase conscious personnel policy. The certificate was presented to Anja Seehrich, the person responsible for work-life-balance at HZB, by the Federal Minister for Family Affairs, Dr. Franziska Giffey. [...]

  • <p>PhD students Hannes Hempel and Sara Niedenzu have earned awards at the E-MRS 2018.&nbsp;</p>
<p></p>NEWS      28.06.2018

    E-MRS: Prizes for two PhD students at HZB

    At the spring meeting of the European Materials Research Society from 18-22 June 2018 in Strasbourg, Hannes Hempel received the prize for the best talk and Sara Niedenzu was awarded for her poster. Both are PhD students at the MatSEC graduate school at HZB. The E-MRS spring conference is the largest materials research conference in Europe with 2,500 participants. [...]

  • NEWS      26.06.2018

    HZB Newsletter with monthly highlights and info on events

    You can now register to receive the monthly HZB Newsletter automatically by email. It always contains two or three science features from research activities, information on personnel matters, and video and reading tips such as links to profiles and news reports from the HZB newspaper Lichtblick, the Campus Blog, and the Science Blog. [...]

  • <p>Ra&uuml;l Garcia Diez is awarded the poster prize. </p>NEWS      26.06.2018

    Dr. Raül Garcia Diez received poster award at the international synchrotron conference SRI 2018

    HZB researcher introduces unique operando characterization by soft X-ray spectroscopy [...]

  • SCIENCE HIGHLIGHT      22.06.2018

    Silicon heterojunction solar cell with a certified 23.1 % energy conversion efficiency

    After further optimization of the baseline process for industrial silicon heterojunction (SHJ) solar cells, the accredited metrology lab ISFH CalTeC now certified an efficiency of 23.1 % for a 4 cm² solar cell. This performance is among the best in the world and demonstrates the leading role of HZB in this technology in Germany and Europe. [...]

  • <p>Maxi W., 6 years old, is happy about her homemade spectroscope, which she could take home with her.</p>NEWS      21.06.2018

    Day of the Little Researchers: 150 daycare children experiment at the HZB

    Why is the light white? And the sky blue? Children ask many questions and want to try things out. For this purpose, 150 pre-school children had many opportunities at the "Day of the Little Researchers" in the HZB school lab. They used self-made spectroscopes to examine the colours of light. [...]

  • NEWS      14.06.2018

    Helmholtz Association supports ATHENA with 29.99 mio. euro grant

    ATHENA (“Accelerator Technology HElmholtz iNfrAstructure”) is a new research and development platform focusing on accelerator technologies and drawing on the resources of all six Helmholtz accelerator institutions (DESY, Jülich Research Centre, Helmholtz Centre Berlin, Helmholtz Centre Dresden-Rossendorf HZDR, KIT and GSI with the Helmholtz Institute of Jena). The Helmholtz Association has now decided to pay almost 30 million euros towards ATHENA as a strategic development project. [...]

  • <p>Perovskite-based tandem solar cells can achieve now efficiencies better than 25%.</p>SCIENCE HIGHLIGHT      14.06.2018

    Perovskite-silicon solar cell research collaboration hits 25.2% efficiency

    A 1 cm2 perovskite silicon tandem solar cell achieves an independently certified efficiency of 25.2 %. This was presented this week at an international conference in Hawaii, USA. The cell was developed jointly by HZB, Oxford University and Oxford PV - The Perovskite CompanyTM. [...]

  • <p>Semi transparent PV-elements in the train station in Perpignan, France. </p>NEWS      13.06.2018

    Alliance Building Integrated Photovoltaics: Björn Rau joins Management Board

    The General Meeting of Alliance for Builiding Integrated Photovoltaics (BIPV) has unanimously elected physicist and photovoltaic expert Dr. Björn Rau, Helmholtz-Zentrum Berlin, to the BIPV Management Board. [...]

  • NEWS      12.06.2018

    HZB experts present cooperation opportunities at Intersolar Europe in Munich

    The international exhibition “Intersolar” brings photovoltaic research and the solar industry together. It is a perfect opportunity for researchers from Helmholtz-Zentrum Berlin to present thin-film photovoltaic technologies and projects, including for example perovskite solar cells and tandem solar cells. [...]

  • NEWS      11.06.2018

    Record number of visitors to the Long Night of Sciences at HZB in Adlershof

    4,700 visitors came to see the electron accelerator BESSY II and the energy laboratories and experimental stations dedicated to researching solar energy. That makes nearly 20 percent more interested visitors to HZB’s Adlershof campus than last time. [...]

  • <p>Prof. Sir Richard Friend will give a talk at HZB (</p>NEWS      07.06.2018

    The pioneer of organic semiconductor electronics will be a guest speaker at Helmholtz-Zentrum Berlin

    On 14 June, Prof. Sir Richard Friend will be giving a talk in the auditorium of BESSY II on the physics that made the breakthroughs in organic electronics possible. He will speak about the "Management of the Coulomb interaction in organic LEDs and solar cells". [...]

  • <p>Alle </p>NACHRICHT      05.06.2018

    Hereinspaziert: Helmholtz-Zentrum Berlin öffnet zur Langen Nacht der Wissenschaften BESSY II und Energieforschungslabore

    Solarzellen, die hocheffizient, sehr preiswert und lange haltbar sind. Wasserstoff, der mit Sonnenenergie gewonnen wird und Autos antreibt. Computer, die mit geringstem Energieverbrauch riesige Datenmengen verarbeiten: Die Forscherinnen und Forscher des Helmholtz-Zentrum Berlin arbeiten daran, dass diese Zukunftsvisionen Realität werden. Zur Langen Nacht der Wissenschaften öffnen sie ihre Labore in Adlershof, stellen ihre Arbeit vor und laden zum Experimentieren ein. [...]

  • <p>Fossils like this 250 million year old skull of a lystrosaurus can be examined very carefully by neutron tomography. </p>SCIENCE HIGHLIGHT      05.06.2018

    Neutron tomography: Insights into the interior of teeth, root balls, batteries, and fuel cells

    A team of researchers at Helmholtz-Zentrum Berlin (HZB) and European Spallation Source (ESS) has now published a comprehensive overview of neutron-based imaging processes in the renowned journal Materials Today (impact factor 21.6). The authors report on the latest developments in neutron tomography, illustrating the possible applications using examples of this non-destructive method. Neutron tomography has facilitated breakthroughs in so diverse areas such as art history, battery research, dentistry, energy materials, industrial research, magnetism, palaeobiology and plant physiology. [...]

  • <p></p>NEWS      31.05.2018

    Thorsten Kamps is Professor of Accelerator Physics at Humboldt-Universität zu Berlin

    On 24 May 2018, Humboldt-Universität zu Berlin (HUB) and Helmholtz-Zentrum Berlin (HZB) jointly appointed Thorsten Kamps to the Professorship of “Accelerator physics – Generation and Characterisation of High Brightness Electron Beams”. Kamps heads a workgroup at the Institute for Accelerator Physics of HZB. He and his team develop a key component for new accelerator facilities, namely high brightness electron sources. [...]

  • NACHRICHT      30.05.2018

    Neue HZB-Zeitung „lichtblick“ erschienen

    In den letzten Wochen ist viel passiert am HZB: das Beschleunigerteam hat einen neuen Betriebsmodus erfolgreich getestet, eine Begleitgruppe zum Rückbau des Forschungsreaktors hat ihre Arbeit aufgenommen – und es gibt jetzt eine Energiemanagerin am HZB. Das sind nur einige Themen, über die wir berichten. [...]

  • NEWS      30.05.2018

    Start of a several-year approval process

    HZB submits its letter of intent to have the last fuel elements from the research reactor BER II stored in Ahaus. [...]

  • <p>Prof. Dr. Rutger Schlatmann</p>NACHRICHT      18.05.2018

    "Tandemtechnologie" - Wie die Produktion von Solarzellen nach Europa zurückkehren könnte

    Der Direktor des PVcomB am HZB im pv-magazine Interview

    "Das Potenzial der Photovoltaik ist nicht mal annähernd ausgereizt", sagt Rutger Schlatmann im Interview. So liege der Wirkungsgrade bei kommerziellen Modulen aktuell bei zirka 20 Prozent. Mit Tandem-Solarmodulen wären bis zu 40 Prozent möglich - und sie ließen sich wahrscheinlich auch wirtschaftlich produzieren. Schlatmann zeigt die Vorteile der Dünnschicht- und der Wafer-Technologie auf und wagt eine Prognose: Welche Technologie wird das Rennen machen? Und unter welchen Bedingungen könnte die Photovoltaik-Produktion nach Deutschland zurückkehren? Lesen Sie mehr im Interview des pv magazine. [...]

  • <p>First author is the mathematician Sibylle Bergmann, whose PhD work is funded by MiCo. </p>SCIENCE HIGHLIGHT      17.05.2018

    Helmholtz Virtual Institute MiCo: Article selected as journal highlight for 2017

    The Helmholtz Virtual Institute MiCo offers a platform through which the Helmholtz-Zentrum Berlin conducts joint research with universities and other partners on the topic of microstructures for thin-film solar cells. The journal Modelling and Simulation in Materials Science and Engineering recently selected an article produced through MiCo as the highlight of those published by the journal during 2017. [...]

  • <p>CIGS-Solarzellen sind auch am HZB ein wichtiges Forschungsgebiet. </p>NACHRICHT      07.05.2018

    Internationaler Workshop zu CIGS-Dünnschicht-Solarmodulen am 18. Juni 2018 in Stuttgart

    Dünnschicht-Solarmodule mit einem Halbleiter aus Kupfer, Indium, Gallium und Selen (CIGS) machen derzeit große Fortschritte bei der kommerziellen Fertigung. Welche Verbesserungen die Industrie in den letzten Jahren erzielt hat, wo die CIGS-Dünnschichttechnologie heute steht und was künftig noch erreichbar ist, diskutieren internationale Experten am 18. Juni 2018 auf dem neunten Workshop IW-CIGSTech in Stuttgart. Veranstaltet wird der jährlich stattfindende Austausch vom Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg (ZSW) und dem Helmholtz-Zentrum Berlin für Materialien und Energie (HZB). Der Workshop richtet sich an Fachleute aus Wissenschaft, Technik und Industrie. [...]

  • <p>After two years of postdoctoral research at HZB, Dr. Charles Hages has received an appointment as Assistant Professor at the University of Florida. </p>NEWS      03.05.2018

    Appointment to University of Florida

    Dr. Charles Hages has received an appointment as Assistant Professor in the Department of Chemical Engineering at the University of Florida. Hages has been a postdoctoral researcher at HZB in the Department of Structure and Dynamics of Energy Materials for two years. At University of Florida, Hages will advance his work in developing energy materials and looks forward to continued collaborations with his HZB colleagues.   [...]

  • NACHRICHT      26.04.2018

    "Es war voll super!" - Girls Day & Zukunftstag am HZB

    Die Mädchen und Jungen zum Zukunftstag am HZB waren einstimmig begeistert - "Es war voll super!". Genau das Feedback gaben die Schülerinnen und Schüler gestern an die Betreuerinnen und Betreuer weiter. Insgesamt haben über 90 Mädchen und Jungen an den dreizehn verschiedenen Workshops in Adlershof und Wannsee teilgenommen. Neu dabei: Das Team der Augentumortherapie hat sich erstmalig im Rahmen des "Zukunftstag 2018" mit einem ganztägigen Workshop für Mädchen & Jungen beteiligt. [...]

  • <p>The Quantsol will be held from 2. to 9. September 2018 in Hirschegg, Kleinwalsertal, Austria.<strong><br /></strong></p>NEWS      26.04.2018

    Registration for Summer School Quantsol is now open!

    It is already the eleventh time that the International Summer School on Photovoltaics and New Concepts of Quantum Solar Energy Conversion (Quantsol) will be held from 2. to 9. September 2018 in Hirschegg, Kleinwalsertal, Austria. The school is organized by the Helmholtz-Zentrum Berlin and the Technical University of Ilmenau. Applications can be submitted through the school’s homepage until May 18th , 2018. [...]

  • <p>More than 50 participants from Israel and Berlin initiated the international research school HI-SCORE with a kick off meeting.</p>NEWS      25.04.2018

    HI-SCORE international research school: Kick Off Meeting in Berlin

    The international research school on solar energy promotes exchange between Germany and Israel and excellent conditions for PhD students. [...]

  • <p>The review panel of the research field "Matter" visited the HZB on 11th January 2018.<strong><br /></strong></p>
<p>Photo. HZB/J. Bierbaum</p>NEWS      19.04.2018

    Results of evaluation by international panel of experts: support for HZB’s future, calls for rapid planning of BESSY III

    The Helmholtz-Zentrum Berlin (HZB) has received an evaluation of “excellent” in a review of science programmes undertaken at all Helmholtz Research Centres. This provides the foundation for future financing of HZB. [...]

  • <p>Photo: HZB/J.Bierbaum</p>NEWS      18.04.2018

    A high ranked Chinese delegation led by Mr. Yin, Vice Mayor of Beijing, visited HZB in Adlershof

    On 11 April 2018, the Vice Mayor of Beijing, the Minister Counsellor and the Secretary-General of the Chinese Embassy in Germany paid a visit to Helmholtz-Zentrum Berlin (HZB). The delegation came to learn more about the research topics, infrastructures and user service at HZB. The plan is to establish Beijing as one of three major national innovation centres with large-scale facilities for the international user community. [...]

  • <p>Laser light for writing and erasing information &ndash; a strong laser pulse disrupts the arrangement of atoms in an alloy and creates magnetic structures (left). A second, weaker, laser pulse allows the atoms to return to their original lattice sites (right). </p>SCIENCE HIGHLIGHT      18.04.2018

    Writing and deleting magnets with lasers

    Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia in Charlottesville, USA have found a way to write and delete magnets in an alloy using a laser beam – a surprising effect. The reversibility of the process opens up new possibilities in the fields of material processing, optical technology, and data storage. [...]

  • <p>The magnetosomes form a chain inside the bacteria's cell shows the electron cryotomography (ECT). </p>SCIENCE HIGHLIGHT      16.04.2018

    BESSY II sheds light on how the internal compass is constructed in magnetotactic bacteria


  • <p>Foto: HZB/K.Kolatzki</p>NACHRICHT      10.04.2018

    HZB-Schülerlabor: Jetzt Termine für das 1. Schulhalbjahr 2018/2019 buchen

    Die Schülerlabore des HZB in Wannsee und Adlershof sind sehr beliebt. Bis zu 3000 Schülerinnen und Schüler experimentieren pro Jahr zu Themen wie Magnetismus und Supraleitung, Solarenergieforschung und Licht und Farben in der forschungsnahen Umgebung des HZB. Für das neue Schulhalbjahr (August 2018 - Januar 2019) bietet das Schülerlabor 76 Projekttage für Grund- und Oberschulen an. Die Projekttage sind kostenfrei. Restplätze für Oberschulklassen können noch gebucht werden. [...]

  • <p class="Default">The picture shows the typical arrangement of cations in a kesterite type structure. In the background the crystal structure is shown, a unit cell is highlighted. </p>SCIENCE HIGHLIGHT      29.03.2018

    Kesterite solar cells: germanium promises better opto-electronic properties than tin

    Specific changes in the composition of kesterite-type semiconductors make it possible to improve their suitability as absorber layers in solar cells. As a team at the Helmholtz-Zentrum Berlin showed, this is particularly true for kesterites in which tin was replaced by germanium. The scientists examined the samples using neutron diffraction at BER II and other methods. The work was selected for the cover of the journal CrystEngComm. [...]

  • NEWS      23.03.2018

    New solar solutions for sustainable buildings and cities

    At the Interdisciplinary conference on „INNOVATION IN SOLAR BUILDING SKINS & ENERGY EFFICIENCY TOWARDS SUSTAINABLE CITIES”, 19th to 20th march in Berlin, experts from the building sector, politics, finance and photovoltaics have discussed the implementation of Building Integrated Photovoltaics (BIPV). In a very lively and active workshop, drivers and barriers were identified. [...]

  • NEWS      22.03.2018

    LEAPS join forces with the European Commission to strengthen Europe’s leading role in science

    “A world where European science is a catalyst for solving global challenges, a key driver for competitiveness and a compelling force for closer integration and peace through scientific collaboration.” This is the vision of LEAPS, League of European Accelerator-based Photon Sources, on which the LEAPS Strategy 2030 is based. Director Jean-David Malo, DG Research and Innovation, received the strategy today at the Bulgarian Presidency Flagship Conference on Research Infrastructures. [...]

  • NEWS      20.03.2018

    HZB has once again been recertified as a family-friendly employer

    Since 2011, HZB has held the “Career and Family” certificate of the non-profit Hertie Foundation. Every three years, HZB’s schemes for balancing work and family/life have to be put under review. In March 2018, independent reviewers confirmed that HZB is still a certified family-friendly employer. [...]

  • <p>Dr. Nele Thielemann-K&uuml;hn was awarded the Innomag Dissertation Award 2018.</p>NEWS      19.03.2018

    HZB scientist got the dissertation prize at the spring conference of the Deutsche Physikalische Gesellschaft

    Dr. Nele Thielemann-Kühn was awarded the dissertation prize of the magnetism research group at the spring conference of the Deutsche Physikalische Gesellschaft (German physical society/DPG) in Berlin. The prize is awarded for outstanding research in the field of magnetism.  [...]

  • <p>A synchrotron source point image of a bending magnet of the Twin Orbit modus. The second orbit closes after three revolution and is winding around the standard orbit at the center.</p>SCIENCE HIGHLIGHT      15.03.2018

    Twin Orbit operation successfully tested at BESSY II

    The first “Twin Orbit User Test week” at BESSY II in February 2018 was a big success and can be considered as an important step towards real user operation. Physicists at Helmholtz-Zentrum Berlin have been able to store two separate electron beams in one storage ring. The twin orbit operation mode can serve users with different needs of the time structure of the photon pulses simultaneously and offers elegant options regarding the future project BESSY VSR. [...]

  • NEWS      12.03.2018

    Register now: Smart City - Interdisciplinary conference on solar energy and architecture


    Experts from the construction industry, photovoltaic research field, and the financial sector will discuss innovative solutions for solar facades in combination with energy efficiency in buildings and cities in Berlin, March 19th-20th, 2018. Photovoltaics integrated into buildings represent an important component for energy-efficient cities of the future.

    Online registration is open until wednesday 14th March. Students are admitted for a reduced fee. [...]

  • NEWS      08.03.2018

    Message to residents: false alarm at the research reactor BER II on 7 March 2018

    We wold like to inform you that a false alarm was triggered at 9:19 p.m. on Wednesday the 7th of March 2018 at the Berliner Experimental Reactor BER II. At the time the alarm went off, BER II was still operating normally and continuously. After clarifying the trigger of the false alarm, a verbal all-clear was given over the campus PA system. [...]

  • <p>PCN nanolayers under sunlight can split water. </p>SCIENCE HIGHLIGHT      28.02.2018

    Solar–to-hydrogen conversion: nanostructuring increases efficiency of metal-free photocatalysts by factor eleven

    Polymeric carbon nitrides exhibit a catalytic effect in sunlight that can be used for the production of hydrogen from solar energy. However, the efficiency of these metal-free catalysts is extremely low. A team at the Tianjin University in China, in collaboration with a group at the Helmholtz-Zentrum Berlin, has increased the catalytic efficiency of these polymeric carbon nitrides by a factor eleven through a simple process resulting in a larger surface area. The paper was published in the journal Energy & Environmental Science. [...]

  • <p>Benjamin Rotenberg is a guest researcher at the HZB-Institute for Solar Fuels in 2018. </p>NEWS      23.02.2018

    Guest researcher at HZB: Bessel Prize Winner Benjamin Rotenberg

    Prof. Benjamin Rotenberg has received a Friedrich Wilhelm Bessel Research Prize from the Alexander von Humboldt Foundation for 2018 and will be spending time regularly as a guest researcher at the Helmholtz-Zentrum Berlin. Rotenberg is a researcher of the Centre National de Recherche Scientifique (CNRS) and heads a research group in Sorbonne Université in Paris. He works in an interdisciplinary area spanning physics and chemistry for modelling transport processes in materials, at interfaces, and in electrolytes. [...]

  • <p>The GaAs nanocrystal has been deposited on top of a silicon germanium needle, as shown by this SEM-image. The rhombic facets have been colored artificially. </p>SCIENCE HIGHLIGHT      22.02.2018

    Luminescent nano-architectures of gallium arsenide

    A team at the HZB has succeeded in growing nanocrystals of gallium arsenide on tiny columns of silicon and germanium. This enables extremely efficient optoelectronic components for important frequency ranges to be realised on silicon chips. [...]

  • <p>Dr. Raul Garcia Diez was awarded for his PhD Thesis with the Dissertationspreis Adlershof 2017.</p>NEWS      20.02.2018

    Dr. Raul Garcia Diez wins the Dissertationspreis Adlershof 2017

    With his talk on the properties of nanoparticles and how they can be measured more accurately at BESSY II, Dr. Raul Garcia Diez convinced the jury and was awarded the Dissertationspreis Adlershof 2017. Humboldt-Universität zu Berlin, IGAFA e. V. and the WISTA MANAGEMENT GmbH are the sponsors of this prize endowed with 3000 Euros. Garcia Diez completed his PhD in 2017 at PTB and TU Berlin and is now active as a post-doctoral researcher at HZB. [...]

  • <p>Hier geht es zur<a href="https://www.helmholtz-berlin.de/media/media/aktuell/print//lichtblick/206/hzb_lichtblick-34_februar-2018_web_extern.pdf"> Online-Ausgabe.</a></p>NACHRICHT      19.02.2018

    Neue HZB-Zeitung lichtblick erschienen

    Perowskit-Solarzellen haben einen rasanten Aufstieg hingelegt – und vermutlich einen noch steileren vor sich. Die Materialien sind so interessant, dass jetzt schon Industriepartner auf den Zug aufspringen, um diese Entwicklung nicht zu verpassen. Lesen Sie in der neuen Ausgabe, was die Solarzellen so besonders macht und warum Oxford PV, ein führender Anbieter auf diesem Gebiet, jetzt mit dem HZB kooperiert (S. 3 und S. 6-7). [...]

  • <p>Pencil, paper and co-polymer varnish are sufficient for a thermoelectrical device. </p>SCIENCE HIGHLIGHT      16.02.2018

    Hidden talents: Converting heat into electricity with pencil and paper

    Thermoelectric materials can use thermal differences to generate electricity. Now there is an inexpensive and environmentally friendly way of producing them with the simplest of components: a normal pencil, photocopy paper, and conductive paint are sufficient to convert a temperature difference into electricity via the thermoelectric effect. This has now been demonstrated by a team at the Helmholtz-Zentrum Berlin. [...]

  • NEWS      12.02.2018

    Joint graduate school for data science sponsors its first projects

    The Helmholtz Association, the Einstein Center Digital Future (ECDF) and the universities of Berlin are creating a new PhD programme in Berlin for the field of data science. Helmholtz-Zentrum Berlin is involved in several of the projects. The first training positions are already advertised.  [...]

  • <p>Sketch of the stripe order: The charge stripes, which are superconducting, are shown in blue. Reprinted with modifications from Physical Review Letters.</p>SCIENCE HIGHLIGHT      09.02.2018

    User research at BER II: New insights into high-temperature superconductors

    After 30 years of research, there are still many unsolved puzzles about high-temperature superconductors - among them is the magnetic “stripe order” found in some cuprate superconductors. A Danish research team has taken a closer look at these stripes, using high-resolution neutron scattering at the spectrometers FLEXX (HZB) and ThALES (ILL, Grenoble). Their results, now published in Physical Review Letters, challenge the common understanding of stripe order, and may contribute to unveil the true nature  of high-temperature superconductivity. [...]

  • <p>Electrons with differing energies are emitted along various crystal axes in the interior of the sample as well as from the surface. These can be measured with the angular-resolved photoemission station (ARPES) at BESSY II. Left image shows the sample temperature at 25 K, right at only 1 K. The energy distribution of the conducting and valence band electrons can be derived from these data. The surface remains conductive at very low temperature (1 K). </p>SCIENCE HIGHLIGHT      06.02.2018

    40-year controversy in solid-state physics resolved

    An international team at BESSY II headed by Prof. Oliver Rader has shown that the puzzling properties of samarium hexaboride do not stem from the material being a topological insulator, as it had been proposed to be. Theoretical and initial experimental work had previously indicated that this material, which becomes a Kondo insulator at very low temperatures, also possessed the properties of a topological insulator. The team has now published a compelling alternative explanation in Nature Communications, however. [...]

  • NEWS      01.02.2018

    HZB launches Helmholtz International Research School in collaboration with Israel

    On 1st February 2018, the Helmholtz-Zentrum Berlin (HZB) has established the Helmholtz International Research School HI-SCORE, which will be oriented towards solar energy research. To accomplish this, HZB is collaborating with the Weizmann Institute in Rehovot, the Israeli Institute of Technology (Technion) in Haifa, and three Israeli universities as well as universities in Berlin and Potsdam. [...]

  • <p>The new building block (left, red outline) comprises two modified starting molecules connected to each other by a silver atom (blue). This leads to complex, semiregular tessellations (right, microscope image). </p>SCIENCE HIGHLIGHT      23.01.2018

    User experiment at BESSY II: Complex tessellations, extraordinary materials

    Simple organic molecules form complex materials through self-organization [...]

  • NEWS      22.01.2018

    Application open for Young Investigator Workshop

    The Virtual Institute (VI) “Dynamic Pathways in Multidimensional Landscapes” explores the governing principles of material functions and is internationally highly visible. Young scientists are invited to participate in the Young Investigators Workshop which takes place from 22 to 27 April 2018 in Grainau. Please apply by 20th February 2018. 

  • <p class="MsoNoSpacing">SEM-images of the different perovskite solar cell architectures, left with planar interface, right with mesoporous interface. Images are coloured: metal oxide (light blue), interface (red), perovskite (brown), hole conducting layer (dark blue), topped with contact (gold).  Scale bar is 200 nm. </p>
<p> </p>SCIENCE HIGHLIGHT      18.01.2018

    Perovskite solar cells: mesoporous interface mitigates the impact of defects

    The nominal cell operating life of perovskite solar cells is strongly influenced by their inner architecture.This was shown by two scientists at the Helmholtz-Zentrum Berlin and the Technical University of Munich. They combined experiments with numerical simulations in order to explain this observation. [...]

  • <p>Simplified cross-section of a perovskite solar cell: the perovskite layer does not cover the entire surface, but instead exhibits holes. The scientists could show that a protective layer is being built up which prevents short circuits.</p>SCIENCE HIGHLIGHT      15.01.2018

    Perovskite solar cells: perfection not required!

    Experiments at BESSY II reveal why even inhomogeneous perovskite films are highly functional  [...]

  • <p>Oxford PV &ndash; The Perovskite Company's industrial site in Brandenburg an der Havel, Germany where the company is working rapidly to transfer its advanced perovskite on silicon tandem solar cell technology to an industrial scale process.</p>NEWS      09.01.2018

    Oxford PV collaborates with HZB to move perovskite solar cells closer to commercialisation

    Perovskite solar technology leader Oxford PV collaborates with leading German research centre to support the accelerated transfer of its technology into silicon cell manufacturing lines. [...]

  • <p>A look into the lab where the components of the electron source were tested.</p>NEWS      08.01.2018

    Milestone reached: electron source for bERLinPro produces its first beam

    On the HZB Adlershof campus, researchers are building a prototype of an energy-recovery linear accelerator (bERLinPro). Intensive research has been going on for years to develop the worldwide unique key components required for this accelerator. Now, the scientists and engineers have reached a very important milestone: from the interactions between cathode, laser pulse and electric field inside the cavity, the first electrons have been produced and accelerated. [...]

  • NACHRICHT      21.12.2017

    Frohe Weihnachten und alles Gute für 2018!

    Wir wünschen Ihnen ein frohes Fest und ruhige, besinnliche Feiertage. Wir bedanken uns bei allen Kooperations- und Geschäftspartnern für die Zusammenarbeit. Den Leserinnen und Lesern unserer Webseite danken wir für ihre Treue. Wir wünschen Ihnen ein schönes Restjahr und freuen uns auf ein ereignisreiches neues Jahr 2018! [...]

  • NEWS      20.12.2017

    Accolade and social commitment at the same time: Prof. Dr. Bernd Rech has become a new member of acatech

    The German “National Academy of Science and Engineering – acatech” has admitted Prof. Dr. Bernd Rech, an expert in renewable energies, into its circle of members. Bernd Rech has headed the Institute of Silicon Photovoltaics at Helmholtz-Zentrum Berlin (HZB) since 2006 and has been the acting Scientific Director of HZB since May 2017. For many years, and in many capacities, he has been a champion for knowledge transfer. “This appointment is an accolade for his scientific accomplishment, and at the same time involves an honorary mandate,” acatech writes in its press release. The federal- and state-funded academy advises social and political actors on technological matters. [...]

  • <p>The Innovation Award of Freundeskreis HZB was given to a team of DESY, Hamburg. </p>NEWS      18.12.2017

    BER II and BESSY II User Meeting at HZB

    More than 600 scientists registered this year for the 9th annual BER II and BESSY II User Meeting from Wednesday to Friday, 13-15 December 2017. The Friends of Helmholtz-Zentrum Berlin recognised outstanding work in the field of synchrotron radiation with an Innovation Award, and the best doctoral dissertation with the Ernst-Eckard-Koch prize. [...]

  • NEWS      11.12.2017

    15 years of Russian–German cooperation at BESSY II

    At an event at HZB, 70 employees and guests were eagerly awaiting a package from Siberia. It arrived a little late, but thankfully just in time: in the package was a relief by a Russian sculptor, which is now ceremoniously unveiled for the 15th anniversary of the “Russian–German Laboratory”. This was in December 2017. [...]

  • NEWS      11.12.2017

    Progress in solar technologies – from research to application

    EU group project presents its results: high efficiencies with less material [...]

  • <p>Backscattered electron micrograph of kesterite powder. Grey grains are attributed to CZTSe. Black background is the epoxy matrix. </p>SCIENCE HIGHLIGHT      07.12.2017

    Solar energy: Defects in Kesterite semiconductors studied using neutrons

    A research team at the HZB has precisely characterised for the first time the various types of defects in kesterite semiconductors. They achieved this with the help of neutron scattering at the BER II research reactor and at Oak Ridge National Laboratory in the USA. The findings point to a means of guided optimisation for kesterite solar cells. [...]

  • <p>Professor Catherine Dubourdieu is head of the HZB Institute Functional thin film oxides for energy efficient future IT. </p>NEWS      04.12.2017

    HZB researcher Catherine Dubourdieu appointed full professor at Freie Universität Berlin

    Catherine Dubourdieu has become a full professor at the Freie Universität Berlin commencing December 2017. The Freie Universität Berlin is one of eleven German elite universities in the German Universities Excellence Initiative. Her position will be that of W3-S, which enables her to continue her research at the Helmholtz-Zentrum Berlin (HZB) in joint role. The physicist is an expert in the field of functional metal oxides that are interesting candidates for future information technologies. [...]

  • <p>The MultiFLEXX detector. <em><br /></em></p>SCIENCE HIGHLIGHT      01.12.2017

    Neutron spectroscopy: new detector module MultiFLEXX increases count rate tenfold

    The triple axis spectrometer FLEXX at BER II provides a new detector module for user service. It measures many angles and multiple energy transfers simultaneously and thus increases the amount of data measured per hour by about a factor of ten. This enables neutron users to make optimal use of their beam time. [...]

  • <p>The energy yields of CIGS modules under real world conditions can be measured on a outdoor testing platform at PVcomB. </p>NEWS      28.11.2017

    PVcomB and AVANCIS launch joint MyCIGS research project in order to improve outdoor performance of thin film CIGS solar modules

    The Competence Centre Thin-Film- and Nanotechnology for Photovoltaics Berlin (PVcomB) is contributing its expertise to improving copper-indium-gallium-sulphide (CIGS) thin-film production in the MyCIGS collaborative research project. CIGS-module manufacturer AVANCIS in Munich is coordinating this project funded by the German Federal Ministry for Economic Affairs and Energy (BMWi). The Carl von Ossietzky University of Oldenburg (Oldenburg University) and Friedrich-Alexander-Universität Erlangen-Nuremberg (FAU) are also partners in the project. [...]

  • <p></p> <p>Independently authenticated: T&Uuml;V S&uuml;d has certified HZB&rsquo;s User Service. Seal of Approval: ISO 9001 Certified Quality Management System, Certificate Registration No.: 12 100 54875 TMS (www.tuv-sud.com/ms-cert)</p>NEWS      27.11.2017

    HZB User Service is a leader for quality management

    User Coordination receives the ISO 9001 certificate from TÜV Süd [...]

  • <p>Thomas Frederking, Wolfgang H&uuml;lsebeck (Leiter der Potsdamer Feuerwehr), Jann Jakobs (Oberb&uuml;rgermeister von Potsdam), Prof. Bernd Rech, Stephan Welzel (v.l.n.r.)</p>
<p>Foto: HZB</p>NACHRICHT      24.11.2017

    Eine Chance für die Forschung – mitten zwischen Berlin und Potsdam

    Potsdams Oberbürgermeister Jann Jakobs informiert sich am Helmholtz-Zentrum Berlin über die Pläne zum Rückbau des Forschungsreaktors BER II. [...]

  • <p>The illustration shows how photons break the dimers into the individual organometallic molecules again, which then effectively n-dope the organic semiconductor. </p>SCIENCE HIGHLIGHT      23.11.2017

    Light facilitates “impossible“ n-doping of organic semiconductors

    Applications as light-emitting diodes and solar cells [...]

  • <p>ESR spectrometers usually require a lot of space. The ESR-on-a-chip fits a box 10 cm on a side. </p>NEWS      22.11.2017

    Miniaturised spectrometer wins first prize at international conference

    A Helmholtz-Zentrum Berlin (HZB) team together with experts at Ulm University and the University of Stuttgart have designed an electron spin resonance spectrometer that fits a box 10 cm on a side. The team presented the device to a technology jury at the international IEEE Sensors 2017 conference in Glasgow, Scotland and received the first prize of the best live demonstration award . ESR spectroscopy is extremely useful for research in energy-related materials such as catalysts, solar cells, and battery electrodes [...]

  • <p>Guest at HZB: the 5th class from primary school "Am Lindenpark" in Nauen.</p>NEWS      22.11.2017

    Helmholtz Day in the HZB School Lab

    Do you know who Hermann von Helmholtz was? At this question, most of the primary school kids shook their head. Yet, the namesake of the Helmholtz Association was one of the most important natural scientists of the 19th century, and one of the last universal scholars. To keep his memory alive, Helmholtz Day has been held regularly, this sixth time in the Helmholtz Association’s School Lab. HZB invited 5th grade pupils from Nauen (Brandenburg) to Wannsee to conduct their own experiments in the School Lab. [...]

  • <p>Photo (from left to right): Dr. Javier Santisteban, scientific director of LAHN, Thomas Frederking, administrative director of HZB, Karina Pierpauli, CEO of LAHN, and Prof. Dr. Bernd Rech, scientific director of HZB. They came together to sign the agreement in Berlin.photo: Silvia Zerbe</p>NEWS      17.11.2017

    HZB makes new contacts with Argentinian Neutron Beams Laboratory

    Helmholtz-Zentrum Berlin (HZB) has signed a cooperation agreement with the Argentinian Neutron Beams Laboratory, LAHN (Laboratorio Argentino de Haces de Neutrones). Through this cooperation, HZB will be advising Argentinian researchers on the construction of two neutron instruments. Also planned is an exchange programme for researchers from both countries. [...]

  • <p>Prof. Bernd Rech represented the HZB and its lightsource BESSY II.</p>NEWS      15.11.2017

    LEAPS – Europe’s light sources join together to coordinate cutting-edge research

    A new strategic group comprising the organisations operating European accelerator-based light sources has been founded in Brussels. The goal of the LEAPS consortium (League of European Accelerator-Based Photon Sources) is to elevate European collaboration on these “super microscopes” to a new level for the purpose of helping solve global challenges through concerted scientific excellence, as well as boost European competitiveness and integration. Representatives from 16 institutions issued a common declaration in the presence of the European Union’s Director General for Research and Innovation, Robert-Jan Smits. [...]

  • NACHRICHT      14.11.2017

    Einladung: Informationsveranstaltung zum Rückbau des Berliner Experimentierreaktors BER II am 21. November

    Ende 2019 schaltet das Helmholtz-Zentrum Berlin (HZB) den Berliner Experimentierreaktor BER II endgültig ab. Über die gesetzlich vorgeschriebene Öffentlichkeitsbeteiligung hinaus möchte das HZB deshalb mit allen interessierten Bürgerinnen und Bürgern in einen Dialog über Stilllegung und Rückbau des BER II treten. Dafür lädt das Forschungszentrum zu einer Informationsveranstaltung ein am Dienstag, den 21. November 2017, von 18 Uhr bis ca. 21 Uhr in der Aula der Johannes-Tews-Grundschule in der Wasgenstraße 50 in 14129 Berlin. [...]

  • <p>With regard to Chinese institutions, the Helmholtz Beijing Office (photo) wants to promote the Helmholtz Association and its outstanding research environment and facilities as an attractive location for the training of young scientists. Photo </p>NEWS      13.11.2017

    HZB is involved in the Helmholtz exchange programme with China

    The Helmholtz Association and the Office of China Postdoctoral Council, OCPC, are establishing a common exchange programme for Chinese postdocs. The young scientists will be researching at eight Helmholtz centres for two years before returning to China. HZB is also involved in the exchange programme, which runs from 2017 to 2021. [...]

  • <p>A short laser pulse pertubates magnetic order in dysprosium. This happens much faster if the sample had a antiferromagnetic order (left) compared to ferromagnetic order (right). </p>SCIENCE HIGHLIGHT      06.11.2017

    Future IT: Antiferromagnetic dysprosium reveals magnetic switching with less energy

    HZB scientists have identified a mechanism with which it may be possible to develop a form of magnetic storage that is faster and more energy-efficient. They compared how different forms of magnetic ordering in the rare-earth metal named dysprosium react to a short laser pulse. They discovered that the magnetic orientation can be altered much faster and with considerably less energy if the magnetic moments of the individual atoms do not all point in the same direction (ferromagnetism), but instead point are rotated against each other (anti-ferromagnetism). The study was published in Physical Review letters on 6. November 2017 and on the cover of the print edition. [...]

  • SCIENCE HIGHLIGHT      02.11.2017

    New magazine “lichtblick” is out: Select articles can be read in English on the website

    Some artikels from our magazine lichtblick are available in English: You can find these articles here: http://hz-b.de/lichtblick-en [...]

  • NEWS      01.11.2017

    Approved! The EU INFINITE-CELL project

    A large EU-sponsored research project on tandem solar cells in which HZB is participating begins in November 2017. The goal is to combine thin-film semiconductors made of silicon and kesterites into especially cost-effective tandem cells having efficiencies of over 20 per cent. Several large research institutions from Europe, Morocco, the Republic of South Africa, and Belarus will be working on the project, as well as two partners from industry. [...]

  • <p>At IUPAC 13th International Conference on Novel Materials and their Synthesis in October, 2017 at Nanjing Tech University, China, Prof. Norbert Koch was awarded for his research.</p>NEWS      01.11.2017

    “Distinguished Award 2017 for Novel Materials and their Synthesis” for Norbert Koch

    At the IUPAC NMS-XIII conference in Nanjing, Professor Dr. Norbert Koch has been awarded the "Distinguished Award 2017 for Novel Materials and their Synthesis "of IUPAC (International Union of Pure and Applied Chemistry) and of the Conference Committee. Koch received the award for his research on hybrid electronic materials and their interfaces in electronic and optoelectronic components. He is Professor at the Department of Physics at Humboldt-Universität zu Berlin, member of IRIS Adlershof and head of a joint research group at the Helmholtz-Zentrum Berlin. [...]

  • NEWS      26.10.2017

    Poster Award for HZB-PhD student at European Conference on Thermoelectrics

    Monika Raja Thulasimani is working on hybrid thermoelectrics at the Graduate School MatSec at HZB. During the European Conference on Thermoelectrics 2017 her poster contribution was selected for an award. The young scientist described a solution based synthesis in order to design more efficient thermoelectric materials. [...]

  • NEWS      20.10.2017

    Great Interest in the HySPRINT Industry Day: Joining forces to advance perovskite solar cells

    No fewer than 70 participants attended the first Industry Day of the Helmholtz Innovation Lab HySPRINT devoted to the topic of perovskite solar cells at Helmholtz-Zentrum Berlin (HZB) on 13 October 2017. This far exceeded the expectations of the event hosts. The knowledge shared on Industry Day will serve as the basis for deepening the collaboration even further with strategically important companies in the scope of HySPRINT. [...]

<p>Philipp Janusch passed his examination as the best of the year 2017 in the State of Berlin. </p>NEWS      20.10.2017

    HZB apprentice is the best precision engineer ("Feinwerkmechaniker") in the State of Berlin for 2017

    Philipp Janusch completed an apprenticeship at Helmholtz-Zentrum Berlin to become a “precision engineer”, and passed his journeyman’s examination as the best of his year in the State of Berlin. What is more, he achieved this despite shortening his three-year apprenticeship by a whole year. In November, Janusch will be participating in the 2017 German Federal Skills Competition for Metalworking on behalf of the State of Berlin. [...]

  • <p></p>
<p>Additional spots appear on the neutron detector starting at a magnetic field strength of 23 Tesla that reveal the new magnetic order in the crystal. </p>
<p> </p>
<p> </p>SCIENCE HIGHLIGHT      19.10.2017

    High Field Magnet at BER II: Insight into a hidden order

    A specific uranium compound has puzzled researchers for thirty years. Although the crystal structure is simple, no one understands exactly what is happening once it is cooled below a certain temperature. Apparently, a “hidden order” emerges,  whose nature is completely unknown.Now physicists have characterised this hidden order state more precisely and studied it on a microscopic scale. To accomplish this, they utilised the High-Field Magnet at the HZB that permits neutron experiments to be conducted under conditions of extremely high magnetic fields. [...]

  • NEWS      18.10.2017

    Get in the action for climate protection: HZB team comes in 7th in CITY CYCLING

    In September, 63 employees in the HZB team competed in the Germany-wide CITY CYCLING campaign. Over three weeks, they rode a total of 16,240 kilometres, landing them in seventh place – right behind the Berlin fire brigade and TU Berlin. And the best part is, together, the HZB colleagues saved 2306 kilograms of carbon dioxide. [...]

  • <p>The Bismut doping is enhanced from 0% (left) to 2.2% (right). Measurements at BESSY II show that this leads to increased bandgaps. </p>SCIENCE HIGHLIGHT      17.10.2017

    Missing link between new topological phases of matter discovered

    HZB-Physicists at BESSY II have investigated a class of materials that exhibit characteristics of topological insulators. During these studies they discovered a transition between two different topological phases, one of which is ferroelectric, meaning a phase in the material that exhibits spontaneous electric polarisation and can be reversed by an external electric field. This could also lead to new applications such as switching between differing conductivities. [...]

  • <p>&nbsp;Returnable cups are the best alternatives to the throw-away society. </p>
<p></p>NEWS      13.10.2017

    Goodbye Paper Cups: Starting Monday, coffee in the Wannsee canteen will only be served in reusable cups

    As many as 150 coffee-to-go cups are used every day in the Wannsee canteen. These cups cannot be reasonably recycled, and instead end up as land fill. Now, the canteen is putting an end to this wastage. As of the 16th of October, coffee to go can only be bought in the new HZB returnable cups (available for 5 euros at the checkout) or served in your own cup, which you bring from home. [...]

  • NACHRICHT      12.10.2017

    Anwohnerinformation: Notfallübung am 14. Oktober am HZB in Berlin-Wannsee

    Am 14. Oktober findet die jährliche Notfallübung am Helmholtz-Zentrum Berlin in Wannsee statt. Die Übung dauert von 8.30 bis ca. 12 Uhr. Während dieser Zeit fahren viele Feuerwehrfahrzeuge zum Helmholtz-Zentrum Berlin. Auch der Einsatz von Theaterrauch ist geplant. Bitte seien Sie unbesorgt, es handelt sich um eine Übung. An der landesweiten Katastrophenschutzübung beteiligten sich auch die Berliner Feuerwehr und mehrere Berliner Behörden. Der Zutritt zum HZB ist während der Übungszeit nicht möglich, auch nicht für HZB-Mitarbeiter. [...]

  • <p>The Campusblog is a place to report on people who work at HZB.</p>NEWS      09.10.2017

    New: Campusblog at HZB

    An anecdote from the canteen, a curious lab photo, and an exciting encounter – there are many stories which just need to be written up. Now we have the Campus Blog of the Helmholtz Zentrum Berlin for this. You will read in the blog, for example, that a HZB staffer cleared paths with a chain saw the whole night long during the Xavier storm, and other interesting stories. [...]

  • NEWS      02.10.2017

    The use coordination on a EU trip: promoting European light sources

    Synchrotrons are outstanding tools for studying materials, cells and even cultural assets. Yet, many researchers in Eastern Europe are unaware that they are entitled to use them. The EU project Calipsoplus supports potential users from these countries. [...]

  • <p>Sketch of the Photosystem II. </p>SCIENCE HIGHLIGHT      30.09.2017

    Novel soft X-ray spectrometer enables individual steps of photosynthetic water oxidation to be observed

    HZB scientists have developed a novel spectrometer at BESSY II that enables researchers to obtain detailed insights about catalytic processes in metalloenzymes. Their international collaboration was successful in delineating individual steps in the catalytic oxidation of water to dioxygen in photosystem II. They published their study in the journal Structural Dynamics. Photosystem II is a part of the of photosynthetic electron transport chain, a process that is responsible for the conversion of solar energy to chemical energy in plants, algae and cyanobacteria. [...]

  • <p></p>NEWS      29.09.2017

    Open doors for kids on 3. October: "Mouse-Day" at BESSY II

    Tuesday 3. October 2017 is a special day in Germany. In order to help kids understand the world, a "Day of open Doors" is organised by the educational TV Programme "Sendung mit der Maus". Helmholtz-Zentrum Berlin has invited kids from age of four years on with their families to visit the experimental hall of BESSY II.  [...]

  • <p>Gerriet K. Sharma with a special icosaedron loudspeaker at BESSY II. </p>NEWS      26.09.2017

    Acoustic sculptures BESSY VSR - premiere at Saturday, 30. September 2017

    For four days, the Akademie der Künste on Hanseatenweg will be a creative lab for musical experimentation, staging concerts, artist talks, and workshops. With its 28 debuts and premieres, and more than 100 artists from 27 countries, the 2nd edition of KONTAKTE is the hub for electroacoustic music and sound art in Berlin. [...]

  • <p>Scanning Tunneling Microscopy shows the regular corrugation pattern of graphene over clusters of gold.</p>SCIENCE HIGHLIGHT      18.09.2017

    The miracle material graphene: convex as a chesterfield

    Graphene possesses extreme properties and can be utilised in many ways. Even the spins of graphene can be controlled through use of a trick. This had already been demonstrated by a HZB team some time ago: the physicists applied a layer of graphene onto a nickel substrate and introduced atoms of gold in between (intercalation). The scientists now show why this has such a dramatic influence on the spins in a paper published in 2D Materials. As a result, graphene can also be considered as a material for future information technologies that are based on processing spins as units of information. [...]

  • <p>Scientists at HZB are exploring the potential of metal organic perovskites for solar cells. Here a tandem solarcell is shown that combines perovskite with silicon.</p>NEWS      15.09.2017

    Invitation to HySPRINT – Industry Day “New Frontiers in PV Research: Emerging Perovskite Semiconductors”

    On 13 October, Helmholtz-Zentrum Berlin will be hosting its first Industry Day on the topic of Perovskite Solar Cells. Following a recap of the current state of research and development and the future potential of perovskite solar cells, participants from industry will be able to give a brief presentation to show their company’s interest in the field. Intensive discussions during the Industry Day will be the starting point for future cooperation. [...]

  • NEWS      14.09.2017

    The HZB website is being revised: take the Online Survey to tell us what you want

    A modern company’s most important calling card is its website. HZB has an extensive online presence that has grown steadily over the years. There is a lot of exciting content – so much, in fact, that it becomes more and more difficult to surf. To make it user friendly once again, our website needs a relaunch, and will continue to need periodical relaunches in future. This is where you can help! What do you use the HZB website for? What do you like about it, and what don’t you like? [...]

  • NEWS      12.09.2017

    Breakthrough at EMIL: First undulator radiation in the CAT experiment

    When the EMIL laboratory (Energy-Materials In-Situ Laboratory Berlin) was ceremoniously inaugurated a year ago in the presence of Federal Minister for Research Johanna Wanka, it was a major milestone for energy materials research at HZB. Ever since, HZB has been building the system that will bring X-ray beams all the way from BESSY II to the EMIL apparatuses. Until the BESSY light is fully available, the scientists have been working with X-rays from a conventional laboratory source. Now, the beamline operators have succeeded in guiding the X-rays from Undulator UE48 in the BESSY II experimental hall to the CAT experiment in the EMIL laboratory. There, it was quantitatively measured using a focus measuring chamber. [...]

  • <p>View over the Lago Maggiore</p>NEWS      11.09.2017

    Atomiade 2018: Register now for the sporting highlight at Lago Maggiore

    The 16th Atomiade will be held in Varese, Italy, from 8 to 11 June 2018. The hosts request that people register informally now so that they can optimally plan the event. Every three years, employees of European research institutes take part in the Atomiade sporting competition. The event is held in the name of pleasure of sports and the mutual sharing of news and information. [...]

  • <p></p>SCIENCE HIGHLIGHT      28.08.2017

    Solar hydrogen production by artificial leafs:

    Scientists analysed how a special treatment improves cheap metal oxide photoelectrodes [...]

  • <p>Schematic of experimental setup for PEEM, the laser optics integrated sample holder and the sample.</p>SCIENCE HIGHLIGHT      25.08.2017

    Optical control of magnetic memory – new insights into fundamental mechanisms

    A research team at Helmholtz-Zentrum Berlin (HZB) has shown for the first time how laser modulation of magnetic properties in materials is influenced by thermal effects and how the process occurs under moderate experimental parameters. At the same time, the scientists discovered a previously unknown dependence on the thickness of the magnetic layer. This is an important clue for our theoretical understanding of optically controlled magnetic data storage media. The findings are published today in the journal Scientific Reports. [...]

  • <p>The summer students come from Argentina, Australia, Austria, Belarus, Brazil, Colombia, Cuba, Egypt, Jordan, Lithuania, Poland, Portugal, Russia, Serbia, Turkey </p>NEWS      07.08.2017

    Summer in the lab

    22 students from all over the world are working at HZB for eight weeks [...]

  • <p>Sketch of an yolk-shell-type nanoreactor: reactands A and B diffuse through the shell and react to C at the catalytically active nanoparticle (yellow). </p>SCIENCE HIGHLIGHT      04.08.2017

    New model for bimolecular reactions in nanoreactors

    Theoretical physicists have devised a mathematical model of two different molecules reacting within so called nanoreactors that act as catalysts. They gained surprising new insights as to what factors promote reactions and how to control and select them. The model is relevant for a wide range of research fields, from biophysics to energy materials. [...]

  • <p>Here you can find the <a href="https://www.helmholtz-berlin.de/media/media/aktuell/print//lichtblick/200/hzb_lichtblick-32_juli-2017_extern_web_01.pdf">PDF (German)</a></p>NEWS      25.07.2017

    New magazine “lichtblick” is out: Select articles can be read in English on the website

    „The photon is our strength“, said Bernd Rech. Since the 1st of May 2017, he has been the acting Scientific Director of HZB. In our new magazine »lichtblick« we spoke with him about his most important duties, the strengths of HZB, and surprises the job held in store. [...]

  • <p>Sequential tomography of a lupin root (yellowish green) after deuterated water (D<sub>2</sub>O) was introduced from below. The rising water front (H<sub>2</sub>O, dark blue) is displaced by the D<sub>2</sub>O from below over the course of time. The complete sequence can be viewed as a video. Created by Christian T&ouml;tzke &copy; University of Potsdam</p>SCIENCE HIGHLIGHT      25.07.2017

    User research at BER II: Lupin roots observed in the act of catching water from soil – so far too quick for 3D views

    Lupins not only produce colourful blossoms but also nutritious beans rich in proteins. Just how these plants draw water approaching their roots in soil has now for the first time been observed in three dimensions by a University of Potsdam team at the HZB-BER II neutron source in Berlin. To accomplish this, they worked with the HZB imaging group to improve the temporal resolution of neutron tomography more than onehundred-fold so that a detailed 3D image was generated every ten seconds. This ultrafast neutron tomography is generally suitable as well for analyses of dynamic processes in porous materials. [...]

  • <p>Lab tour of the perovskite synthesis facility at the HZB Institute for Silicon Photovoltaics, on the occasion of the HyPerCells Research Colloquium in May 2017. </p>NEWS      24.07.2017

    Record- efficiency solar cells realised by the HyPerCells Graduate School

    The University of Potsdam and the Helmholtz-Zentrum Berlin founded the HyPerCells Graduate School just two years ago with focus on metal halide perovskites for solar applications. Now, groups involved in the graduate school have demonstrated perovskite solar cells with record-efficiencies of over 20 percent. This confirms the graduate school is at the forefront of this research in Germany and internationally highly competitive. [...]

  • <p class="msocomoff" align="left"><!-- [if !supportAnnotations]--><!--[endif]--></p>
<p>Scanning electron micrographs show a 10-micron planar deposition. The constituting silver crystals are about 100 nanometres in size. </p>
<p></p>SCIENCE HIGHLIGHT      24.07.2017

    Writing with the electron beam: now in silver

    For the first time an international team realized direct writing of silver nanostructures using an electron beam applied to a substrate. Silver nanostructures have the potential to concentrate visible light at the nanoscale. Potential applications include sensor design to detect extremely small traces of specific molecules, as well as devices for optical information processing. [...]

  • SCIENCE HIGHLIGHT      19.07.2017

    Modern, concise and informative: HZB presents itself

    A information brochure, illustrated throughout with a fusion of photos and sketches, serves as the new business card of HZB. In concise and understandable language, it describes the centre’s most important research focuses, introduces the large-scale facilities and laboratories, and shows why HZB is an internationally attractive place to work. [...]

<p>Spectacular delivery and installation; all pictures (excl. no 4 and 7) made by HZB/W. Anders</p>NEWS      17.07.2017

    Nitrogen tank for the accelerator project bERLinPro was installed in Adlershof


  • <p>Kickoff with a meeting on 19 June 2017:  Prof. Borisenko, Dr. Rienks, Prof. B&uuml;chner (all IFW), the leader of the Young Investigator Group Dr. Fedorov; Dr. Varykhalov and apl. Prof. Rader (both HZB) (from left to right). </p>NEWS      03.07.2017

    Kickoff for Joint Lab with IFW Dresden

    The Leibniz Institute for Solid State and Materials Research Dresden (IFW) and Helmholtz-Zentrum Berlin (HZB) have created a Joint Lab for “functional quantum materials” and under its umbrella a Young Investigator Group. [...]

  • <p>Schwebendes Ufo bei der Lange Nacht am HZB. </p>NACHRICHT      26.06.2017

    1130 Besucher bei der Langen Nacht der Wissenschaften am Standort Wannsee

    Das HZB begrüßte zur „Klügsten Nacht des Jahres“ am 24. Juni 2017 mehr als tausend Gäste, darunter viele Kinder und Jugendliche. Quirliges Treiben auf unserer Wissenschaftsstraße, großer Andrang bei den Mitmach-Experimenten und beim Schülerlabor, interessierte Fragen zum Forschungsreaktor: Die Lange Nacht der Wissenschaften am HZB war bunt und facettenreich – und bot für jeden Geschmack etwas. Hier haben wir die schönsten Momente zusammengestellt. [...]

  • <p>The kids built spectroscopes and studied the colours of light. photo: HZB/S.Zerbe </p>NEWS      20.06.2017

    100 kindergarten kids do experiments at HZB on the Day of Little Researchers

    Kindergarten children are inquisitive and want to know how everything works – and they ask a great deal of questions. On the Germany-wide "Day of Little Researchers" on 19 June, around 100 kids visited the HZB School Labs in Adlershof and Wannsee and investigated the colours of light. [...]

  • NACHRICHT      20.06.2017

    Die Lange Nacht der Wissenschaften am 24. Juni macht schlau - auch am HZB in Wannsee

    Das Helmholtz-Zentrum Berlin lädt am Samstag auf dem Campus Wannsee zur Langen Nacht der Wissenschaft ein. Unsere Highlights für Sie: Führungen durch die Experimentierbereiche um den Forschungsreaktor, durch die Energie-Labore und den Beschleuniger für die Augentumortherapie, eine Wissenschafts-Show und ein vielseitiges Kinderprogramm. [...]

  • NEWS      20.06.2017

    EU project CALIPSOplus has started for free access to European light sources

    The EU is providing ten million euros in funding for the project CALIPSOplus, submitted by 19 European light sources. The project consortium, of which Helmholtz-Zentrum Berlin is a member, kicked off on May 2017. CALIPSOplus is aimed at promoting the international exchange of scientists and transnational access to the light sources in Europe. Other priorities are to integrate the relatively less active regions of Europe and to initiate research projects with small and mid-sized companies.  [...]

  • <p>Klaus Habicht analyses materials also with the help of neutron resonance spin-echo spectroscopy, a method, he helped to develop further.  </p>SCIENCE HIGHLIGHT      19.06.2017

    HZB researcher receives university-level teaching credential (Habilitation)

    Dr. Klaus Habicht has successfully completed the university-level teaching accreditation process in the Faculty of Mathematics and Natural Sciences at the University of Potsdam and received his official university-level teaching qualification for the physics of condensed matter. Habicht has conducted numerous lectures and seminars at the University of Potsdam since 2011, in particular in solid-state physics and methods in neutron research. He heads the Department of Methods for Characterisation of Transport Phenomenon in Energy Materials at the HZB. [...]

  • <p>This optical zone melting furnace is producing large single crystals. </p>NEWS      19.06.2017

    New at Campus Wannsee: CoreLab Quantum Materials

    Helmholtz-Zentrum Berlin has expanded its series of CoreLabs for energy materials research. In addition to the five established CoreLabs, it has now set up a CoreLab for Quantum Materials. A research team from the HZB Institute for Quantum Phenomena in New Materials is responsible for the CoreLab and its modern equipment. The CoreLab is also open to experimenters from other research institutes.  [...]

  • NEWS      14.06.2017

    New lab for electrochemical interfaces at BESSY II

    The Helmholtz-Zentrum Berlin (HZB) is establishing a joint lab together with the Max Planck Society (MPS) to study electrochemical phenomenon at solid/liquid interfaces. The Berlin Joint Lab for Electrochemical Interfaces, or BElChem for short, will employ X-rays from BESSY II to analyse materials for renewable energy production. [...]

  • <p>Scientists as well as technicians are invited to join in a productive exchange at FIBiB Workshop from 6 th to 7th November. The image was created by ZEISS Crossbeam 340 KAT.</p>NEWS      09.06.2017

    Using focussed ion beams in research - HZB workshop on focussed ion-beam engineering and application areas

    Focussed ion beams are highly useful tools for researchers in various disciplines. Samples can be etched in the micro- and nanometre range with them. Modern ion microscopes as well as their complementary methods and techniques are available at the HZB and can be utilised by scientists from universities and institutes from the world over. Now for the first time, the HZB is organising a workshop to introduce these methods and their areas of application. It will take place November 6th and 7th. The deadline for submitting abstracts is June 15. [...]

  • <p>The upgrade will usher in some important innovations. BESSY-VSR will offer short light pulses with durations of two picoseconds as well as longer pulses with durations of 15 picoseconds, while the high level of photon flux remains constant &ndash; even during the shorter pulses.</p>
<p>Foto &copy;: euroluftbild.de / Robert Grahn</p>NEWS      02.06.2017

    Cutting-edge research in Berlin: BESSY II light source to be equipped with new features and capabilities

    With the transformation of the BESSY II light source into a variable-pulse-length storage ring, Berlin will become even more attractive as a location for science to researchers from the world over [...]

<p>One example from the paper: <em>operando</em> radiography (A)- (C) shows how sulphur compounds (black features) are deposited on the carbon cathode (gray) of a lithium-sulphur cell during charging and discharging.</p>SCIENCE HIGHLIGHT      01.06.2017

    HZB paper appears in special anniversary edition of the Journal of Physics D: Applied Physics

    A paper on X-ray tomography of various types of batteries has been published as a highlight in the exclusive special edition of the Journal of Physics D: Applied Physics. Two groups at the HZB along with a team from Justus Liebig University in Giessen, Germany, contributed to the article. [...]

  • <p>Intersolar Europe is the world&rsquo;s leading exhibition for the solar industry and its partners and takes place annually at the Messe M&uuml;nchen exhibition center in Munich, Germany.</p>
<p>&copy; Solar Promotion GmbH</p>NEWS      31.05.2017

    Intersolar Europe in Munich: HZB research meets solar industry

    At the major international photovoltaics exhibition from 31 May to 2 June 2017, Helmholtz-Zentrum Berlin (HZB) will be exhibiting solar energy research projects and presenting opportunities for industrial cooperation in the field of photovoltaics (PV). [...]

  • <p>The data show band gaps and efficiency levels of various perovskite materials. The efficiency levels for high band gaps fall due to undesired halide segregation effects. </p>SCIENCE HIGHLIGHT      30.05.2017

    Trends and pathways to high-efficiency perovskite solar cells

    Perovskite  solar cells have been the big surprise over the last while: inside of only a few years, their efficiency level has been increased from just under 10 % to fully 22 %. There has never been such rapid progress in a new material for solar cells. Scientists around the world are therefore working on this new class of materials. Eva Unger and Steve Albrecht from Helmholtz-Zentrum Berlin (HZB) have evaluated trends in the advancement of perovskite materials in an invited review article in Journal of Materials Chemistry A. They point out what opportunities exist for advancing this class of materials, combining them with other semiconductors, and where limitations lie.  [...]

  • <p>SEM-images of 3D graphene with different pore size (a,b,c, scale = 1&mu;m). Optical properties (d,e,f) change with pore size. </p>NEWS      18.05.2017

    Three-dimensional graphene: experiment at BESSY II shows that optical properties are tuneable

    An international research team has for the first time investigated the optical properties of three-dimensional nanoporous graphene at the IRIS infrared beamline of the BESSY II electron storage ring. The experiments show that the plasmonic excitations (oscillations of the charge density) in this new material can be precisely controlled by the pore size and by introducing atomic impurities. This could facilitate the manufacture of highly sensitive chemical sensors. [...]

  • <p>The porous structure of the nanoparticles is visible under the electron microscope. <strong><a href="http://onlinelibrary.wiley.com/doi/10.1002/adfm.201701176/abstract;jsessionid=F0393DC7BB4AAE76B24CFD675C8CC430.f03t04   " class="Extern">adfm.201701176</a></strong></p>SCIENCE HIGHLIGHT      17.05.2017

    Better cathode materials for Lithium-Sulphur-Batteries

    A team at the Helmholtz-Zentrum Berlin (HZB) has for the first time fabricated a nanomaterial made from nanoparticles of a titanium oxide compound (Ti4O7) that is characterised by an extremely large surface area, and tested it as a cathode material in lithium-sulphur batteries. The highly porous nanomaterial possesses high storage capacity that remains nearly constant over many charging cycles. [...]

  • NEWS      16.05.2017

    New Helmholtz Young Investigator Group for electrochemical conversion of carbon dioxide at HZB has started

    Dr. Matthew T. Mayer is setting up a Helmholtz Young Investigator Group in the field of energy materials research at HZB. He investigates how carbon dioxide and water can be converted electrochemically into hydrocarbons such as methane and methanol by using renewable energies. Matthew Mayer will receive 300,000 euros per year over a period of five years. [...]

  • NEWS      15.05.2017

    HZB and Freie Universität Berlin establish the joint research group “X-Ray Microscopy” for studying complex cellular processes

    In May this year, the joint research group “X-Ray Microscopy” was launched, combining the expertise of teams led by Prof. Dr. Gerd Schneider (Helmholtz-Zentrum Berlin) and Prof. Dr. Helge Ewers (Freie Universität Berlin). While Ewers’ group contributes its experience in the field of optical microscopy and biological research, the HZB workgroup is responsible for X-ray microscopy at the synchrotron source BESSY II. The two methods help researchers to gain a detailed insight into the processes taking place inside cells. [...]

  • NEWS      05.05.2017

    HZB Distinguished Lecture on 13 June, 2 pm: Prof. Douglas MacFarlane speaks about “Hydrogen and Ammonia as Energy Carriers and for Energy Storage”

    We cordially invite you to the next “HZB Distinguished Lecture”, which will also be a commemorative event for our friend and colleague, Prof. Leone Spiccia, who passed away in December 2016. Leone held a professorship at Monash University in Australia and was connected with us through Humboldt and Helmholtz International Fellowships. To continue our work in his spirit, a close friend and collaborator of Leone, Prof. Douglas R. MacFarlane from Monash University, will deliver the key lecture on “Hydrogen and Ammonia as Energy Carriers and for Energy Storage – Progress and Perspectives”. [...]

  • <p>The YIW2017's dynamic discussions crowd.</p>NEWS      04.05.2017

    The Young Investigators Workshop 2017 on Dynamic Pathways in Multidimensional Landscapes

    24 scientists from various countries participated in the Young Investigators Workshop 2017 on Dynamic Pathways in Multidimensional Landscapes in Grainau am Eibsee in the Bavarian Alps. This workshop which was organized by Professor Alexander Föhlisch was dedicated to study the research topics of the Helmholtz Virtual Institute 419. It included both experimental and theoretical projects on molecular and chemical dynamics, phase transitions and switching as well as fundamental light-matter interaction. [...]

  • <p>Comparison of the same specimen at the old Beamline (left) and the new HZB-XM-Beamline (right). </p>NEWS      03.05.2017

    X-Ray microscopy: HZB-TXM is back in operation

    The X-ray microscope (HZB-TXM) is back in operation. The TXM offers significantly  better quality images compared to the former X-ray microscopy station. [...]

  • <p>Prof. Anke Kaysser-Pyzalla dankte den Mitarbeiterinnen und Mitarbeitern, den Zuwendungsgebern, den Kooperationspartnern und Herrn Frederking f&uuml;r die vertrauensvolle Zusammenarbeit. Foto: HZB/Phil Dera</p>NACHRICHT      03.05.2017

    Eindrücke von der Verabschiedung von Prof. Anke Kaysser-Pyzalla

    Am 2. Mai haben wir Prof. Dr. Anke Kaysser-Pyzalla mit einem Festkolloquium feierlich verabschiedet. Über 200 Gäste und Wegbegleiter aus der Wissenschaft und Politik sind gekommen, um ihr für die hervorragende Zusammenarbeit und ihr großes Engagement für das HZB zu danken. Unser Fotograf hat die schönsten Momente eingefangen.   [...]

  • <p>Bernd Rech becomes provisional Scientific Director of the HZB on May 1, 2017.</p>NEWS      28.04.2017

    Bernd Rech becomes provisional Scientific Director of the HZB on May 1, 2017.

    Following the succession of long-serving Scientific Director Prof. Anke Kaysser-Pyzalla to President of TU Braunschweig, the Supervisory Board of the Helmholtz-Zentrum Berlin has appointed Prof. Bernd Rech as provisional Scientific Director. He assumes this position as of May 1, 2017. Bernd Rech has headed the Institute for Silicon Photovoltaics at the HZB since 2006 and is highly esteemed worldwide as an expert in renewable energies. [...]

  • <p>Foto: HZB/S. Kodalle</p>NACHRICHT      27.04.2017

    Ansturm auf die 70 Plätze beim Girl’s Day im HZB

    Wie sieht die Arbeit von Wissenschaftlerinnen, Ingenieurinnen oder Programmiererinnen aus? Beim Girls‘ Day können Mädchen MINT-Berufe (Mathematik, Informatik, Naturwissenschaften und Technik) kennenlernen, die noch immer nicht besonders beliebt bei den Berufsanfängerinnen sind. Die 70 Plätze für den Girl’s Day an den beiden HZB-Standorten waren schnell vergeben.  [...]

  • <p>Nanodiamonds have been modified by attaching different molecules. </p>SCIENCE HIGHLIGHT      26.04.2017

    Nanodiamonds as energy materials: tuning the functionalities

    An international team has shed light onto interactions between nanodiamonds and water molecules. Experiments at synchrotron sources showed how hydrogenated groups on nanodiamond surfaces change the network of hydrogen bonds in the aqueous environment and may potentially influence the catalytic properties of nanodiamonds, for instance for the production of solar fuels from CO2 and light. [...]

  • NACHRICHT      24.04.2017

    Michael Müller besucht das HZB

    HZB ist "wichtiger Impulsgeber für die Zukunft der Brain City Berlin" [...]

  • <p>Learning about solar fuels and photovoltaics goes green. The summerschool takes place from 3. to 10. september 2017 in the idyllic Kleinwalsertal, Austria. </p>NEWS      24.04.2017

    Registration open for Quantsol Summer School

    Newcomers and young scientists in solar energy research can register now for the 10. International Summer School on Photovoltaics and New Concepts of Quantum Solar Energy Conversion (Quantsol). The school is organized by the Helmholtz-Zentrum Berlin and the Technical University of Ilmenau and will be held from 3. to 10. September 2017 in Hirschegg, Kleinwalsertal, Austria. Applications can be submitted through the school’s homepage until May 21st, 2017. [...]

  • <p>A magnetic field pulse switches the initial vortex state to &ldquo;onion state&rdquo; with two walls. In the subsequent magnetic snapshots the domain wall motion is shown. After 58 ns both walls meet and annihilate, thus completing the switching process into the opposite sense of rotation. </p>NEWS      19.04.2017

    Green IT: New switching process in non-volatile spintronics devices

    Physicists achieved a robust and reliable magnetization switching process by domain wall displacement without any applied fields. The effect is observed in tiny asymmetric permalloy rings and may pave the way to extremely efficient new memory devices. The results have been published in Physical Review Applied, highlighted as an Editors' Suggestion.

  • NACHRICHT      18.04.2017

    Neue HZB-Zeitung „lichtblick“ erschienen

    In ihrem letzten Interview als Geschäftsführerin des HZB erläutert Anke Kaysser-Pyzalla, warum sie gerade jetzt geht, obwohl sie eigentlich noch gern geblieben wäre. Nils Martensson lernen wir als Pendler zwischen Nobel-Komitee und HZB kennen. Und Marcus Bär erzählt, warum es sich in jedem Fall lohnt, bei den Kopernikus-Projekten der Bundesregierung dabei zu sein und warum die Forscherinnen und Forscher aus verschiedenen Disziplinen dabei erst einmal Vokabeln lernen müssen. (Online-Ausgabe) Auf der Mittelseite der lichtblick stellen wir das Projekt näher vor, an dem sich das HZB beteiligt.

  • <p>Prof. Dr. Yan Lu receives a professorship at the University of Potsdam</p>NEWS      10.04.2017

    Yan Lu receives a professorship at the University of Potsdam

    Dr. Yan Lu is a group leader at the Institute for “Soft Matter and Functional Materials”. At HZB, she is researching functional hybrid materials that consist of colloid particles.  As of 1 April 2017, Yan Lu has been appointed as W2 Professor for Polymer-based Hybrid Materials at the University of Potsdam. [...]

  • <p>The experimental data show, how a light pulse dissociates a hydrogen nucleus from the nitrogen atom without destroying important bonds within the molecule. </p>SCIENCE HIGHLIGHT      07.04.2017

    Proton transfer: Researcher find mecanism to protect biomolecules against light induced damage

    A team at the Helmholtz-Zentrum Berlin (HZB) together with researchers in Sweden and the USA has analysed a mecanism which protects biomolecules such as the DNA against damage by light. They observed how the energy of incoming photons can be absorbed by the molecule without destroying important bonds. The experiments took place at the Linac Coherent Light Source (LCLS) free-electron laser in California as well as the BESSY II synchrotron source at the HZB in Berlin, where with resonant inelastic X-ray-diffraction a very sensitive method is available. [...]

  • NEWS      07.04.2017

    CIGS Thin-film Solar Modules: HZB invites for workshop

    Global demand for photovoltaic systems is rising sharply. CIGS thin-film modules have become a hot topic for the solar industry. International experts will convene in Stuttgart on May 30, 2017, at the annual IW-CIGSTech workshop to discuss past and potential future technical and industrial advances in this solar technology. The Centre for Solar Energy and Hydrogen Research (ZSW) and the Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) are hosting the eighth installment of this workshop, which caters to scientists, engineers and industry specialists. [...]

  • <p>Prof. Dr. Anke Kaysser-Pyzalla, Prof. Dr. Roel van de Krol, Dirk Mielke, Dr. Catherine Dubourdieu andMonica Wurfbaum (from left to right). Photo: HZB/J. Bierbaum</p>NEWS      27.03.2017

    Foundation stone laying ceremony for an energy research laboratory on Wannsee campus

    A milestone has been reached in the expansion of energy materials research at the Lise-Meitner Campus: on 23 March 2017, the celebration was held for laying the foundation stone of a laboratory building that will offer a multitude of methods for synthesising and characterising energy materials. [...]

  • <p>Chromium enhances the current density which is directly related to catalytic activity. </p>SCIENCE HIGHLIGHT      23.03.2017

    Finding and understanding low cost catalysts: it all comes down to the iron

    A team has investigated more than one hundred iron-nickel catalysts containing various admixtures of chromium. At BESSY II, they also analysed the configurations of the electrons in the individual elements. The team showed that an increasing proportion of chromium primarily influences the energy levels of the iron electrons, which are important for the catalytic effect. The results of this high-throughput study will assist the knowledge-based search for better specific catalysts. [...]

  • NEWS      22.03.2017

    Deutsche Gesellschaft für Materialkunde was a guest of HZB

    From 15 to 16 March, the Deutsche Gesellschaft für Materialkunde, DGM (German association of materials science), held its closed board meeting and Advisory Council meeting at HZB. The experts took the occasion to visit the synchrotron source BESSY II and the neutron source BER II, gaining an insight into important future projects of HZB. [...]

  • NEWS      22.03.2017

    Christiane Becker receives a professorship at HTW Berlin University of Applied Sciences

    Prof. Dr. Christiane Becker has accepted the call to a W2 professorship for the field of “Experimental physics focusing on material sciences and photonics” at HTW Berlin University of Applied Sciences. Since October 2012, she has headed a Young Investigator Group funded by the Federal Ministry of Education and Research, BMBF. [...]

  • <p>Dr. Antonio Abate</p>NEWS      17.03.2017

    Dr. Antonio Abate sets up a new Helmholtz Young Investigator Group to improve life span of perovskite solar cells

    Dr. Antonio Abate sets up a Helmholtz Young Investigator Group at Helmholtz-Zentrum Berlin and moved to Berlin a few days ago. His aim: He wants to improve Perovskite solar cells which are one of the most promising material classes to be discovered in the last few years. The scientist will study the materials and interfaces of perovskite solar cells in order to improve their long-term stability. [...]

  • <p>Dr. Eva Unger leads the Young Investigator Group Hy-Per-FORME. </p>NEWS      17.03.2017

    Young investigator group at HZB: Scaling perovskite cells

    The new Young Investigator Group Hy-Per-FORME led by Dr. Eva Unger is working on scaling all processing steps to enable manufacturing of perovskite solar cells on larger areas, thus brigding he gap between lab and industry. [...]

  • NEWS      16.03.2017

    20 participants join the first Photon School at HZB

    From 14 to 24 March, the first Photon School takes place at HZB. 20 students from 8 countries get an unique opportunity for a first-hand training covering a wide range of experimental and theoretical methods for probing the molecular structure, function, and dynamics of complex material systems. Leading experts from all fields of spectroscopy give lectures, share their latest results, and present future research strategies. [...]

  • <p>Uschi Steigenberger was awarded the Officer of the British Empire (OBE) medal. <strong> </strong></p>NEWS      15.03.2017

    Uschi Steigenberger receives prestigious British medal for her service to the sciences

    World-reknowned physicist Dr. Uschi Steigenberger has been honoured with one of the highest decorations in Great Britain for her services to the sciences. She was awarded the Officer of the British Empire (OBE) medal by the Minister of State for Universities, Science, Research and Innovation, Mr. Jo Johnson. Uschi Steigenberger has also chaired the Scientific Advisory Council of the HZB for many years. [...]

  • <p>Nanostructures trap the light, shows this illustration on the cover in  Advanced Optical Materials. </p>SCIENCE HIGHLIGHT      14.03.2017

    How to increase efficiencies of ultrathin CIGSe solar cells

    Nanoparticles at the back help harvesting the light. [...]

  • NEWS      13.03.2017

    NextGen@Helmholtz Conference 2017 for PhD students from Helmholtz

    The Conference will take place from 5 th to 7th July - please register until April 30th

  • <p>Robert Seidel leads the Young Investigator Group Operando Interfacial Photochemistry. </p>SCIENCE HIGHLIGHT      09.03.2017

    Highly sensitive method for detecting ion pairs in aqueous solution developed

    Scientists of the Helmholtz-Zentrum Berlin, Freie Universität Berlin, Universität Heidelberg, and the University of Chemistry and Technology Prague have empirically detected a very specialised type of electron transfer in an aqueous salt solution, one which had only been predicted theoretically up to now. Based on these results, they now expect to have an extremely sensitive method for detecting ion pairs in solutions.


  • <p>Agreement signed: HZB and NCBJ agreed to transfer and rebuild three of HZB&rsquo;s neutron scattering instrumentsin 2019.</p>NEWS      07.03.2017

    Agreement signed: Three neutron instruments will be transferred to the Polish research reactor MARIA in 2019

    In February 2017 Helmholtz-Zentrum Berlin (HZB) and the National Centre for Nuclear Research (NCBJ) in Poland agreed to transfer and rebuild three of HZB’s neutron scattering instruments at the Polish research reactor MARIA in 2019. With support from the Polish Ministry of Science and Higher Education, the facility near Warsaw is currently being upgraded with latest generation technology, offering attractive research opportunities for neutron scientists from Germany and Europe. [...]

  • <p>The teams of Freie Universit&auml;t Berlin and Helmholtz Zentrum Berlin are engaged in the of training young scientists. The participants produce samples and examine at the MX beamlines of BESSY II.</p>NEWS      03.03.2017

    HZB and Freie Universität Berlin are establishing the joint research group “Macromolecular Crystallography”

    For eight years, HZB’s “Macromolecular Crystallography” workgroup has been successfully cooperating with the “Structural Biochemistry” research group headed by Prof. Markus Wahl at the Freie Universität Berlin. They are about to intensify this cooperation. The two institutes are establishing a joint research group dedicated to studying the biochemistry of genetic information processing. This research group benefits in particular from access to the three MX beamlines, where it can study protein crystals using the synchrotron light from BESSY II. [...]

  • NACHRICHT      02.03.2017

    Jetzt anmelden für den Girls’ Day am HZB

    Am 27. April 2017 ist wieder Girls' Day! An diesem Tag schnuppern Schülerinnen der Klassen 5 bis 10 deutschlandweit in die Welt der Technik, Ingenieur- und Naturwissenschaften. Auch am Helmholtz-Zentrum Berlin finden zum Girls‘ Day wieder spannende Workshops statt. Jetzt startet die Anmeldung dafür auf der zentralen GirlS’Day-Webseite. Es stehen an beiden Standorten insgesamt 70 Plätze zur Verfügung. [...]

  • NEWS      28.02.2017

    School labs of the HZB and Helmholtz Association are more popular with every year

    The aim of the Helmholtz school labs is to make science fun for children and adolescents. Helmholtz-Zentrum Berlin has run a school lab on the Wannsee campus since 2004 and on the Adlershof campus since 2010. During this time, more than 20,000 visitors have participated in the age-appropriate project days at HZB – and the numbers continue to rise. [...]

  • <p>The SPATZ team of ANSTO was glad about the arrival of the former HZB neutron instrument BioRef. It will be set up until 2018 in Australia. photo: ANSTO.</p>NEWS      20.02.2017

    Neutron instrument BioRef arrived safely in Down Under

    As reported, the neutron instrument BioRef will be set up at the “Australian Centre for Neutron Scattering” of ANSTO. Approximately 257 components were safely packed in 43 wooden crates weighing just under 30 tonnes for the sea voyage from Hamburg to Port Botany, Australia. On 14 February the colleagues from ANSTO told us: the three shipping containers arrived safely after a two-month journey from Germany. [...]

  • <p>Gerrit G&uuml;nther und Veronka Grzymek help Zhilun Lu with the experiment.</p>NEWS      16.02.2017

    NEAT starts user operation

    The newly built time of flight spectrometre NEAT has welcomed its first users: Jie Ma from Shanghai Jiao Tong University and his colleague Zhilun Lu examined magnetic excitations in crystalline samples and enjoyed fast data rate and high flexibility of instrumental configurations. NEAT team is now looking forward to further new studies and user experiments!      [...]

  • <p>Alex Redinger receives two million euros in funding from the Luxembourg National Research Fund for expanding his research into solar cells materials at the university Luxembourg.</p>NEWS      08.02.2017

    Dr. Alex Redinger receives assistant professorship at the University of Luxembourg

    Alex Redinger will be receiving two million euros in funding from the Luxembourg National Research Fund for expanding his research into solar cells materials. This is combined with an assistant professorship at the University of Luxembourg with the possibility of tenure. Redinger works as a postdoc in the “Structure and Dynamics of Energy Materials” department. [...]

  • <p>The 3000<sup>th</sup> ocular tumour patient was able to benefit from proton treatment on January 27<sup>th</sup>, 2017. Photo</p>NEWS      06.02.2017

    3000th ocular tumour patient treated using protons at HZB

    A team at Charité - Universitätsmedizin Berlin and the Helmholtz-Zentrum Berlin (HZB) has now treated its 3000th ocular tumour patient with an individualised proton radiation protocol. This involves irradiating the tumour with fast hydrogen nuclei (protons) that have been accelerated to precisely set energies. These protons penetrate the healthy tissue and only release their energy in the tumour itself. [...]

  • <p>With the upgrade BESSY VSR, Helmholtz-Zentrum Berlin will continue in future to offer a highly demanded synchrotron source for energy materials research with international appeal. Photo: &copy;: euroluftbild.de / Robert Grahn</p>NEWS      01.02.2017

    Green light for upgrading BESSY II into a variable-pulse-length storage ring (BESSY-VSR)

    The General Assembly of the Helmholtz Association has unanimously endorsed the realisation of a unique accelerator project at the BESSY II synchrotron radiation source [...]

  • <p>Dr. Pierre Schnizer. Photo: HZB</p>NEWS      01.02.2017

    New Technical Project Manager for BESSY VSR

    As of 1 January 2017, Dr. Pierre Schnizer is the new Technical Project Manager for BESSY VSR. In close coordination with the Scientific Project Managers Prof. Andreas Jankowiak and Prof. Jens Knobloch, Schnizer is supervising, among other things, the construction, infrastructure and integration of the necessary modules into the storage ring. In short, his responsibility in the project team is to ensure the successful technical construction of BESSY VSR. [...]

  • <p>Scientists from all participating organisations together with the project officers from FCH2 JU met in January 2017 to start off the project. </p>NEWS      30.01.2017

    Solar based hydrogen generation: EU-project PECSYS aiming for technological breakthrough

    Development of demonstrators measuring up to ten square meters in area planned [...]

  • NEWS      24.01.2017

    Young Investigators Workshop of the Helmholtz Virtual Institute "Dynamic Pathways in Multidimensional Landscapes"

    The Virtual Institute explores the governing principles of material’s function in an internationally highly visible centre of excellence. From now on, young scientists (PhD students, master students, and young postdocs) are invited to participate in the Young Investigators Workshop that will take place from 23rd to 28th April 2017 at the Eibsee-Hotel in the Bavarian Alps. It focuses on the research topics of the Helmholtz Virtual Institute 419 and includes both experimental and theoretical projects on molecular and chemical dynamics, phase transitions and switching as well as fundamental light-matter interaction. [...]

  • NEWS      23.01.2017

    PVcomB will help mass-produce the raw photovoltaic materials used in Wysips® technology

    Sunpartner Technologies and Helmholtz-Zentrum Berlin sign license agreement [...]

  • <p>The application laboratory &ldquo;SupraLab@HZB&rdquo; is funded by the EFRE Fonds.</p>NEWS      11.01.2017

    7.4 million euros from the EFRE fund: HZB is setting up a new application laboratory for developing superconducting accelerator components

    Helmholtz-Zentrum Berlin is receiving 7.4 million euros from the European Regional Development Fund (EFRE). The money is being used to set up the application laboratory “SupraLab@HZB” for the advancement of high-current superconducting cavities. These components will be needed for operating the next generation of novel, high-performance light sources. The laboratory will also provide complex superconducting component test beds for use by companies and research institutes in the region. [...]

  • <p><strong>&nbsp;</strong></p>NEWS      10.01.2017

    Graduate school MatSEC: New PhD students can apply now

    The first students of the graduate school MatSEC (Materials for Solar Energy Conversion) have defended successfully their PhD thesis. The graduate school, which is organised jointly by Dahlem Research School of Freie Universität Berlin, is now open for new PhD-students. The research portfolio, which was focused on kesterites, does now include wide bandgap semiconductors and thermoelectrica as well. [...]

  • <p>BioRef was transported from HZB on December 19, 2016 and shipped to Australia. The trip will take about two months. </p>NEWS      05.01.2017

    The BioRef neutron instrument to be set up again at ANSTO in Australia

    The BioRef neutron instrument commenced its roughly two-month journey from HZB to Australia on December 19, 2016. It will be set up again at the OPAL neutron source there, part of the Australian Nuclear Science and Technology Organisation (ANSTO) in Sydney. It is expected to be available to the international scientific community beginning in 2018 under the name "Spatz". [...]

  • NEWS      04.01.2017

    Prof. Dr. Martina Schmid assumes the professorship of experimental physics at the University of Duisburg-Essen

    On 1 January 2017, Martina Schmid assumed the W2 professorship of “experimental physics” in the Physics department of the University of Duisburg Essen. From 2012 to the end of 2016, Martina Schmid headed the Helmholtz Young Investigator Group “Nano-Optical Concepts for Photovoltaics” at HZB. [...]

  • NACHRICHT      23.12.2016

    Frohe Weihnachten und alles Gute für 2017!

    Wir wünschen Ihnen ein frohes Fest und bedanken uns bei allen Kooperations- und Geschäftspartnern für die Zusammenarbeit. Den Leserinnen und Lesern unserer Webseite danken wir für ihre Treue. Wir wünschen Ihnen ein schönes Restjahr und freuen uns auf ein ereignisreiches neues Jahr 2017! [...]

  • <p>Dr. Matthew Mayer</p>NEWS      22.12.2016

    Helmholtz-Zentrum Berlin is establishing a Helmholtz Young Investigator Group for electrochemical conversion of carbon dioxide

    Dr. Matthew T. Mayer from the École Polytechnique Fédérale de Lausanne (EPFL), Switzerland, will be putting together a Helmholtz Young Investigator Group in the field of energy materials research at HZB. He will be researching into how carbon dioxide and water can be converted electrochemically into hydrocarbons such as methane and methanol using renewable energies. Matthew Mayer will receive 300,000 euros per year over a period of five years for establishing and running his Young Investigator Group. [...]

  • NEWS      21.12.2016

    New magazine “lichtblick” is out: Select articles can be read in English on the Intranet


  • <p>PFIA-molecules self-orient with their hydrophobic backbones outside (black lines) and their hydrophilic side-chains inside, in order to form nanometer sized water channels. Each side-chain possesses two docking points (red and yellow circles) for hydrogen ions (H+).  These are acidic groups, shown in the magnifying glass. </p>SCIENCE HIGHLIGHT      19.12.2016

    Fuel cells with PFIA-membranes:


  • <p><a href="https://youtu.be/LsShwGenrYo" class="Extern">Video Gerriet K. Shama im HZB</a>. </p>NACHRICHT      19.12.2016

    Video über akustische Skulpturen zu BESSY VSR erschienen

    Der Klangkünstler Gerriet K. Sharma arbeitet an einem Projekt, zu dem ihn das Ausbauvorhaben BESSY VSR am HZB inspiriert hat. Dabei erschafft er in seinen Kompositionen  akustische Skulpturen, die mit einem Ikosaederlautsprecher hörbar werden. Die Technik stellt die Firma Sonible zur Verfügung. Nun hat Sonible ein Video über dieses Projekt produziert, das ab sofort im Netz zu sehen (und zu hören!) ist. [...]

  • <p>Prof. Dr.-Ing. Anke Kaysser-Pyzalla. Photo: TU Braunschweig</p>NEWS      15.12.2016

    Prof. Anke Kaysser-Pyzalla recommended for President of Technische Universität Carolo-Wilhelmina zu Braunschweig

    The Academic Senate of the Technische Universität Carolo-Wilhelmina zu Braunschweig has recommended Prof. Anke Kaysser-Pyzalla to the Ministry of Science and Culture for the State of Lower Saxony, Germany, as TU Braunschweig’s choice for its next President. The election took place December 14, 2016 in a joint session with the University Advisory Council. The Ministry will now take the recommendation under consideration. Ms. Kaysser-Pyzalla has been Scientific Director of the Helmholtz-Zentrum Berlin since October 2008. During this time, she has placed the HZB in an excellent position within the German and international research landscape and noticeably elevated the visibility of its research capabilities. [...]

  • <p>Dr. Antonio Abate from the University of Fribourg, Switzerland, is putting together a Helmholtz Young Investigator Group at Helmholtz-Zentrum Berlin.</p>NEWS      15.12.2016

    Helmholtz-Zentrum Berlin has gained a new Helmholtz Young Investigator Group to boost its energy materials research.

    The new group is working to prolong the life span of perovskite solar cells to 25 years and longer. [...]

  • <p>Dr. Joachim Robert Gr&auml;fe (rechts) zusammen mit Prof. Mathias Richter vom Freundeskreis Helmholtz-Zentrum Berlin w&auml;hrend der Verleihung des Ernst-Eckhard-Koch-Preis am 8. Dezember 2016 in Berlin-Adlershof.</p>NACHRICHT      15.12.2016

    Ernst-Eckhard-Koch-Preis und Innovationspreis Synchrotronstrahlung

    Am 8. Dezember 2016 vergab der Freundeskreis Helmholtz-Zentrum Berlin zum 26. mal den Ernst-Eckhard-Koch-Preis für eine herausragende Promotionsarbeit auf dem Gebiet der Forschung mit Synchrotronstrahlung sowie den Innovationspreis Synchrotronstrahlung. Die Preisverleihung fand während des 8. BER II und BESSY II Nutzertreffens statt. [...]

  • <p>PhD student Christine B&uuml;low, HZB Institute Methods and Instrumentation for Synchrotron Radiation Research, was awarded with the poster prize of the HZB usermeeting.</p>NEWS      08.12.2016

    Eighth Joint BER II and BESSY II User Meeting at HZB

    More than 500 scientist have gathered at the eighth Joint BER II and BESSY II User Meeting at HZB on December 7th to 9th, 2016. The Verein Freundeskreis Helmholtz-Zentrum Berlin e.V. did bestow the Innovation Award and the Ernst-Eckard-Koch Prize. A Poster prize was awarded to the best poster out of 200. [...]

  • <p>Moderator Ulli Zelle und HZB-Mitarbeiter John Schneider in der Reaktorwerkstatt. Foto: G&uuml;nther Trept</p>
<p></p>NACHRICHT      08.12.2016

    rbb Heimatjournal zu Gast am HZB

    Ein Blick übern Gartenzaun, ein Besuch in der Reaktorwerkstatt. Das HZB ist fester Bestandteil der Region Wannsee und bekam Besuch vom rbb Heimatjournal. Die Vorabendsendung des rbb besucht regelmäßig interessante Orte in Berlin und Brandenburg. Am 10. Dezember 2016 wurde die Sendung mit dem Titel "Ulli Zelle erkundet das alte Dorf Wannsee" im rbb ausgestrahlt. Wer sie verpasst hat, kann sie hier anschauen. [...]

  • NACHRICHT      08.12.2016

    Wege zur CO2-freien Energieversorgung

    Sieben Helmholtz-Zentren arbeiten an Systemlösungen für die künftige Energieversorgung   [...]

  • <p>Prof. Dr. Michael Steiner</p>NEWS      06.12.2016

    Nobel Prize in Physics: Scientific work from Berlin contributes to the evidence of theoretical predictions

    Pioneering new areas of physics through measurement of quantum effects [...]

  • NEWS      02.12.2016

    First Thermoelectrics Colloquium at HZB brought many experts together


  • NACHRICHT      01.12.2016

    Personalia: Berufungen

    Das HZB hat kürzlich gemeinsam mit Universitäten und Hochschulen aus Berlin, Potsdam und Bielefeld mehrere Berufungsverfahren erfolgreich abgeschlossen. Mehr erfahren Sie in diesem Überblick: [...]

  • <p>Diatomic nickel ions (gray) are captured at cryogenic temperatures in an RF ion trap; cold helium gas (blue) serves to dissipate the heat. The magnetic field orients the ions. </p>
<p> </p>SCIENCE HIGHLIGHT      28.11.2016

    A new record at BESSY II: ten million ions in an ion trap cooled for the first time to 7.4 K

    Magnetic ground states spectroscopically ascertained

  • <p>Spin, an intrinsic property of electrons, is related to the dynamics of electrons excited as a result of singlet fission &ndash; a process which could be used to extract energy in future solar cell technologies. </p>NEWS      25.11.2016

    More energy from the sun - Researchers road-test powerful method for studying singlet fission

    Singlet fission could have a central role in the future development of solar cells. [...]

  • <p>Martina Schmid was awarded for her brillant presentation at PVSEC-26 in Singapore.</p>NEWS      23.11.2016

    Talk given by Martina Schmid at PVSEC-26 lauded

    PVSEC-26, one of the  largest international conferences in the field of photovoltaics, took place in Singapore at the end of October. Prof. Martina Schmid received a “Best Oral Presentation Award” for her talk in the field of New Materials and Concepts. [...]

  • <p>The new Energy Materials In-Situ Laboratory (EMIL) offers direct access to hard and soft synchrotron x-ray radiation to investigate the chemical and electronic properties of catalysts and other energy materials. <br /></p>NEWS      21.11.2016

    Research for Germany’s energy transition: EMIL@BESSY II approved for the Kopernikus “Power-to-X” project

    The storage of excess solar and wind power is one of the greatest challenges in Germany’s energy transition. To address this, the German Federal Ministry for Education and Research (BMBF) has created the “Power-to-X” (P2X) project under its Kopernikus programme. P2X will advance research into converting electrical energy from the sun and wind into basic chemical compounds, gaseous energy media, and fuels. A total of 17 research institutions, 26 industrial enterprises, as well as three non-governmental organisations are involved, and the BMBF is funding the first development phase of the project at a level of 30 million Euros. The Helmholtz-Zentrum Berlin will participate in the planned research, using the advanced synthesis capabilities and the BESSY II synchrotron-based X-ray characterization tools at the recently inaugurated EMIL@BESSY II laboratory complex. [...]

  • <p>Die Sch&uuml;lerinnen und Sch&uuml;ler kamen aus Reinickendorf zum Helmholtz-Tag nach Wannsee und brachten gute Laune mit. Foto: HZB/S. Kodalle&nbsp;</p>NACHRICHT      17.11.2016

    Helmholtz-Tag im HZB-Schülerlabor

    Am 15. November 2016 lud das Schülerlabor zum Helmholtz-Tag nach Wannsee ein. Die Fünftklässler der Peter-Witte-Grundschule aus Reinickendorf erhielten einen Einblick in die Arbeit von Hermann von Helmholtz und experimentierten zum Thema Magnetismus. Der Helmholtz-Tag fand zum fünften Mal in den Schülerlaboren in der Helmholtz-Gemeinschaft statt. [...]

  • <p>Prof. Dr. Stuart Parkin, Max Planck Institute of Microstructure Physics, Alexander von Humboldt Professor, Martin Luther University Halle-Wittenberg; Photo </p>NEWS      16.11.2016

    HZB Distinguished Lecture on 21 November: Prof. Stuart Parkin speaks about spin and ion currents for future computing technologies

    We cordially invite you to the "HZB Distinguished Lectures". Prof. Stuart Parkin from the Max Planck Institute of Microstructure Physics, Alexander von Humboldt Professor, Martin Luther University Halle-Wittenberg will present on 21 November 2016 his thoughts on "Beyond charge currents: spin and ion currents for future computing technologies". [...]

  • NEWS      15.11.2016

    Birgit Schröder-Smeibidl is the new Administrative Director of the German Institute of Human Nutrition, DIfE

    On 1 November, HZB’s longstanding head of "Facility Management" and security chief, Dr. Birgit Schröder-Smeibidl, moved to the German Institute of Human Nutrition in Potsdam. The HZB management congratulates Ms. Schröder-Smeibidl on her new post. [...]

  • <p>The x-ray reflectitivityof the Mo/Si multilayer mirror is changed via a time delayed laserpulse. </p>SCIENCE HIGHLIGHT      14.11.2016

    Methods at BESSY II: Versatile cross-correlator for ultrafast X-ray experiments

    Particularly in the soft X-ray range experimentalists are lacking a broadband method to correlate ultrashort X-ray and laser pulses in space and time. Only recently, a team from Helmholtz-Zentrum Berlin and the University of Potsdam was able to achieve this by utilizing a standard molybdenum-silicon (Mo/Si) multilayer mirror at the FemtoSpeX facility at BESSY II. They use femtosecond laser pulses to modulate the multilayer period under the Bragg condition on a sub-picosecond up to nanosecond timescale which in turn strongly affects the mirror’s X-ray reflectivity. The presented Mo/Si cross-correlator works for the soft up to the hard X-ray regime as well as for a broad range of laser pump wavelengths (mid-IR to UV) and renders this technique as an easy to implement and versatile timing tool for various synchrotron- and lab-based pump-probe experiments. The results are published in the journal of "Structural Dynamics". [...]

  • <p>The funding will go towards optimising a co-evaporation process at PVcomB used for producing CIGS layers for thin-film solar cells. Photo: HZB</p>NEWS      14.11.2016

    Speeding up CIGS solar cell manufacture

    Speeding up CIGS solar cell manufacture [...]

  • <p><span class="Beschriftung1"><span>ANSTO: Adi Paterson and Simone Richter, HZB: Prof Anke Kaysser-Pyzalla and Thomas Frederking. </span></span></p>NEWS      08.11.2016

    HZB and ANSTO have extended their Memorandum of Understanding

    Advancing energy materials research together [...]

  • NEWS      03.11.2016

    Kathrin Aziz-Lange is a professor at the University of Bielefeld

    As of 1 November 2016, Kathrin Aziz-Lange is a junior professor at the Faculty of Chemistry of the University of Bielefeld. The physicist has been head of a Helmholtz Young Investigator Group at Helmholtz-Zentrum Berlin since January 2016. She and her team are investigating defects in material systems for generating solar fuels, using the diverse in-operando characterisation methods offered by the synchrotron source BESSY II. [...]

  • <p>from left: Prof. Robert Schl&ouml;gl, Prof. Anke Kaysser-Pyzalla, Prof. Johanna Wanka, Prof. Otmar Wiestler, Dr. Jutta Koch-Unterseher, Thomas Frederking; Photo: HZB/D. Ausserhofer</p>NEWS      01.11.2016

    EMIL, a 2000-square-metre laboratory complex, has opened for research into new energy materials

    After three years of construction, the Energy Materials In-Situ Laboratory (EMIL) is now open. The new laboratory complex for researching energy materials, annexed to BESSY II in Berlin-Adlershof, was ceremonially inaugurated with the involvement of the Federal Minister of Research, Johanna Wanka, on 31 October 2016. At the new laboratory, which offers direct access to the brilliant light of the electron storage ring BESSY II, researchers are looking to synthesise and analyse materials for future renewable energy generation. Around 20 million euros were invested in the construction of the laboratory. [...]

  • <p>Participants of the Autumn School 2016.</p>NEWS      19.10.2016

    Young researchers from eleven countries attended the Autumn School of the Helmholtz virtual institute “Microstructure Control for Thin-Film Solar Cells”

    From the 9th to the 14th of October 2016, the “Autumn School on Microstructural Characterisation and Modelling of Thin-Film Solar Cells” brought together lecturers and participants from eleven different countries. In the Akademie Berlin-Schmöckwitz, 30 postgrads and postdocs discussed characterisation and simulation methods for the development of efficient thin-film solar cells. [...]

  • <p>A pump pulse promotes the molecule's electrons to an excited state and with probe pulses the binding energy of the excited electrons can be measured. However, pump-probe laser experiments are only feasible under ultra-high vacuum.</p>SCIENCE HIGHLIGHT      19.10.2016

    Methodology advance at HZB: ionic liquids simplify laser experiments on liquid samples

    An HZB team has developed a new approach to conduct photoemission spectroscopy of molecules in solution. This has been difficult up to now because the sample needed to be situated in vacuum – but liquids evaporate. The work has now demonstrated it is feasible to replace the solvent with an ionic liquid of low vapor pressure, which does not perturb the sample characteristics.  This allows the molecules to be excited with a laser pulse and to record the behaviour of the excited energy states. It provides insight into the physical and chemical processes of novel liquid energy materials that might be employed in organic solar cells or catalysts, for instance. [...]

  • <p>X-PEEM images show the orientation of magnetic domains in the permalloy film overlaid on the superconducting dot (dashed square) before (left image) and after the write process (right image). In this sample the domains (arrows, right image) are reorientied in a monopole pattern. </p>SCIENCE HIGHLIGHT      10.10.2016

    Future Information Technologies: New combinations of materials for producing magnetic monopoles

    An international collaboration at BESSY II has discovered a new method to inscribe exotic magnetic patterns such as magnetic monopoles into thin ferromagnetic films. Such unconventional orientation of magnetic domains might open a new path for the design of energy efficient data storage. The new materials system consists of regular arrays of superconducting YBaCuO-dots covered with an extremely thin permalloy film. A shortly applied external magnetic field leads to the creation of supercurrents within the superconducting dots. These currents produce a complex magnetic field pattern, which is inscribed into the permalloy film above. The results are published in Advanced Science. [...]

  • <div id="infowindow_7baf4b2e2c_2d5f6a_2d11d2_2d8f20_2d0000c0e166dc_7d" class="infowindow_7baf4b2e2c_2d5f6a_2d11d2_2d8f20_2d0000c0e166dc_7d infoValueContainer">
<div class="readOnlyInfoValue">Photo: HZB / G.Bertling&nbsp;</div>
</div>NEWS      10.10.2016

    Twitter Storify: All about the Foresight Workshop on Energy Materials Research at BESSY II

    The Helmholtz-Zentrum Berlin für Materialien und Energie focuses on developing advanced materials for solar energy conversion and storage and wants to extend a discussion platform for future projects and research activities. Therefore HZB invites current and future users from universities, research institutes and industry to the BESSY II Foresight Workshop which takes place from October 10 – 11, 2016. These discussions help HZB identifying prospective scientific fields and – very importantly - the expectations, needs and requirements from the user communities for cutting edge science with synchrotron radiation. Here is the workshop programme. [...]

  • NEWS      05.10.2016

    Diana Quintero Castro gets a professorship at the University of Stavanger, Norway

    Diana Quintero Castro has been appointed as associate professor in the faculty of science and technology at the University of Stavanger. At HZB she is responsible for the cold triple axis neutron spectrometer FLEXX at the neutron source BER II and focuses on magnetism. She will continue her research focuses on magnetic materials by using neutron scattering at different neutron sources. She has accepted her appointment and will leave HZB at the end of December, 2016. [...]

  • <p>Sch&uuml;lerUni: Zwei Mal im Jahren geh&ouml;ren die H&ouml;rs&auml;ale der Freien Universit&auml;t Berlin den Sch&uuml;lerinnen und Sch&uuml;lern der 5. und 6. Klasse. Foto: FU Berlin</p>NACHRICHT      30.09.2016

    HZB-Schülerlabor zu Gast bei der SchülerUni der Freien Universität Berlin

    Vom 26. bis 30. September 2016 öffnet die Freie Universität Berlin ihren Campus für Berliner Schulen. Unter dem Motto „Lernen für eine zukunftsfähige Welt“ bietet sie 80 verschiedene Workshops an und verwandelt Hörsäle und Seminarräume in Mitmachlabore und Kreativwerkstätten. Das HZB-Schülerlabor unterstützt die SchülerUni mit zwei Workshops zum Thema „Nachhaltigkeit und Klimaschutz“. [...]

  • <p>SEM &ndash; model of a metallic nano-network with periodic arrangement ( left) and visual representation of a fractal pattern (right). </p>SCIENCE HIGHLIGHT      27.09.2016

    Nanotechnology for energy materials: Electrodes like leaf veins

    Nano-sized metallic wires are attracting increasing attention as conductive elements for manufacturing transparent electrodes, which are employed in solar cells and touch screen panels. In addition to high electric conductivity, excellent optical transmittance is one of the important parameters for an electrode in photovoltaic applications. An international team headed by HZB scientist Prof. Michael Giersig has recently demonstrated for these applications that networks of metallic mesh possessing fractal-like nano-features surpass other metallic networks in utility. These findings have now been published in the most recent edition of the renowned journal Nature Communications. [...]

  • <p>The newly developed expert system was used to analyse 364 data sets of a specidfic protein crystal, soaked in different fragments.  </p>SCIENCE HIGHLIGHT      26.09.2016

    Advancing methodology at BESSY II: Automated evaluation speeds up the search for new active substance

    The macromolecular crystallography (MX) beamlines at the BESSY II X-ray source are specially designed to highly automated structural analyses of protein crystals. With up to now more than 2000 solved structures of protein molecules, these beamlines are by far the most productive ones in Germany and are in vigorous demand by groups from either an academic and industrial research area. Now teams from HZB and Philipps-Universität Marburg in Germany have automated the evaluation of data records as well. The newly developed expert system identifies small molecule fragments bound to proteins in the raw X-ray diffraction data. These fragments represent suitable starting points for the development of an active substance. Using a series of 364 samples, the collaborating partners demonstrated that the expert system works reliably and can speed up the search for a suitable active agents. [...]

  • <p>Lesen Sie <a href="https://www.helmholtz-berlin.de/media/media/aktuell/print//lichtblick/155/hzb_lichtblick-29_september-2016_extern_web.pdf">hier </a>die Online-Ausgabe.</p>NACHRICHT      26.09.2016

    Neue HZB-Zeitung "lichtblick" erschienen

    In der neuen Ausgabe erwarten Sie viele interessante Themen. Unter anderem erzählt Simone Raoux, warum sich viele Forscherinnen und Forscher auf die Eröffnungen des Energy Materials In-situ Laboratory (EMIL)-Labors am 31. Oktober 2016 freuen. Mit dem Anschluss an das Synchrotronlicht von BESSY II können die Forschenden eine unglaubliche Vielfalt an Energie-Materialien charakterisieren. Hier geht es zur Online-Ausgabe. [...]

  • <p>More than 100 experts did gather at the international conference "Dynamic Pathways in Multidimensional Landscapes", which was held in September in Berlin.</p>NEWS      19.09.2016

    VI-Conference "Dynamic Pathways in Multidimensional Landscapes 2016"

    Near the museum island, in the heart of Berlin, the International Conference "Dynamic Pathways in Multidimensional Landscapes 2016" has taken place last week. More than 100 international experts met at the Magnus-Haus of the German Physical Society from 12 -16 September 2016. [...]

  • <p>Cover: WILEY-VCH&nbsp;</p>SCIENCE HIGHLIGHT      15.09.2016

    Manual of characterisation techniques for thin-film solar cells published with the involvement of HZB researchers

    In August 2016, the second, enlarged edition of the reference book "Advanced Characterization Techniques for Thin-Film Solar Cells" appeared from renowned publisher WILEY-VCH. Co-editor is HZB researcher Dr. Daniel Abou-Ras. A total of eleven authors from HZB wrote chapters for this reference. It provides a comprehensive overview of many characterisation and modelling techniques that can be employed for solar cell materials and components. [...]

  • NACHRICHT      15.09.2016

    Aktion STADTRADELN: HZB-Team derzeit auf dem vierten Platz in Berlin

    3100 Kilometer haben die Mitarbeiterinnen und Mitarbeiter des HZB-Team in nur einer Woche mit dem Rad zurückgelegt. Damit landet das HZB im berlinweiten Ranking der Aktion STADTRADELN derzeit auf Platz 4. Die Aktion zeigt: Radfahren für den Klimaschutz - das geht. Denn in nur einer Woche hat das HZB-Team insgesamt mehr als 440 Kilogramm Kohlenstoffdioxid eingespart. Der Aktionszeitraum läuft vom 9. bis 29. September 2016. [...]

  • <p>Participants of QENS 2016 and WINS 2016</p>NEWS      12.09.2016

    International conference QENS 2016 and Workshop WINS 2016 in Potsdam

    From 5th to 9th of September HZB has hosted two international scientific events dedicated to the study of the dynamics at nanoscale, QENS and WINS 2016. While Quasielastic Neutron scattering conference (QENS 2016) was dedicated to the scientific applications, international Workshop on Inelastic spectrometers WINS 2016 allowed to touch on the instrumental aspects. 108 scientists from all over the world participated in these events organized in the heart of the Potsdam. [...]

  • <p>A new generation of sensors: The scales of the petrified cone move upward against gravity, and on drying back to their starting positions. </p>
<p></p>NEWS      09.09.2016

    User research at BESSY II: How water moves glass

    In the realm of plants, capillary forces are a widely observed impetus for actuation. They are the physical basis for the expansion of porous materials during uptake of fluid. Such materials include the cones of conifers with their readily observable movement during drying or wetting. Scientists at the Chair of Biogenic Polymers of the Technical University Munich, located at the Science Center Straubing, have succeeded in retaining this plant-derived movement when the respective plant has been replaced by an artificial petrification process. Elaborate analyses at the synchrotron source BESSY II in Berlin showed that the internal structure of the pine cone was retained. Thereby, they laid the foundations for a new generation of sensoric materials. [...]

  • <p>Die Wissenschaftsetage im Bildungsforum pr&auml;sentiert zwei spannende Veranstaltungen zum Thema Nachhaltigkeit in Forschung und Kunst unter Mitwirkung von zwei HZB-Mitarbeitern. Foto: cK. Fritze</p>NACHRICHT      06.09.2016

    Veranstaltungshinweis: Vortrag Potsdamer Köpfe mit Daniel Abou-Ras und Vernissage der Ausstellung „Das Bild entsteht im Kopf“ von Kerstin Berthold

    Am 8. September lädt die Wissenschaftsetage im Bildungsforum Potsdam zu zwei interessanten Veranstaltungen ein. Den Auftakt macht Daniel Abous-Ras um 18 Uhr mit seinem Vortrag: „Das lässt tief blicken – Solarzellen unter dem Mikroskop“. Der Physiker zeigt dabei, wie die Entwicklung neuer Solarzellen durch verschiedene Methoden der Mikroskopie unterstützt werden kann. Diese Bilder inspirierten die Künstlerin Kerstin Berthold unter anderem zu ihren Collagen, die im Anschluss an den Vortrag in der Ausstellung „Das Bild entsteht im Kopf“ zu sehen sind. Die Vernissage findet um 19:30 Uhr statt. [...]

  • <p>12 neue Mitarbeitende:&nbsp;Sieben Auszubildende und f&uuml;nf Teilnehmer dualer Studieng&auml;nge starten dieses Jahr am&nbsp;HZB in das Berufsleben.</p>NACHRICHT      01.09.2016

    Start in das Berufsleben

    Sieben Auszubildende und fünf Teilnehmer dualer Studiengänge beginnen dieses Jahr ihre Ausbildung am HZB. Am 1. September wurden sie von Thomas Frederking, dem kaufmännischen Geschäftsführer des HZB, und den Ausbildenden herzlich begrüßt. [...]

  • <p>Robert Seidel's results are important for the design of experiments and for the correct interpretation of data. </p>NEWS      31.08.2016

    Honoured with poster prize and introductory talk

    Mean free path of electron scattering in liquid water considerably shorter than supposed [...]

  • <p><span class="st">&nbsp;</span></p>NEWS      29.08.2016

    European project for thin film Kesterite Solar cells has reached its goals

    Eleven partners from different countries have joined forces in the EU-research project KESTCELLS from September 2012 until 31. August 2016. The mission was to train a new generation of experts and to increase the efficiencies of Kesterite solar cells. Now, at the end of the project, these goals have been perfectly reached. [...]

  • <p>Lithium ions migrate through the electrolyte (yellow) into the layer of crystalline silicon (c-Si). During the charging cycle, a 20-nm layer (red) develops on the silicon electrode adsorbing extreme quantities of lithium atoms. </p>NEWS      08.08.2016

    Silicon thin fims in Lithium-Ion-Batteries: Charging observed with neutron measurements

    The capacity of lithium-ion batteries might be increased theoretically by six times by using anodes made of silicon instead of graphite. A team from the Helmholtz-Zentrum Berlin (HZB) Institute of Soft Matter and Functional Materials has observed for the first time in detail how lithium ions migrate into thin films of silicon. It was shown that extremely thin layers of silicon would be sufficient to maximise the load of lithium. The results are published in the journal ACSnano. [...]

  • <p>18 students from nine countries are hosted at HZB for the next two months. </p>NEWS      03.08.2016

    Started: International Summer Student Programme

    Coming from all over the world, 18 students have joined HZB as guests for this summer. From August 1 until September 23 they take part in the international summer student programme, HZB is organising since over 25 years. During the following weeks, the students can work in close cooperation with HZB teams on a project in energy materials research.  [...]

  • <p>Fabian Weber (right) is investigating the dynamics of electron processes within graphene-oxide quantum dots as a member of the team headed by Dr. Annika Bande (left). Quantum dots like these as catalysts could help make solar water splitting more efficient. Using Weber&rsquo;s theoretical model, a much greater amount of information can be obtained from the empirical data gathered by the group headed by Dr. Tristan Petit. </p>NEWS      01.08.2016

    Two Freigeist Fellows interweave their research at HZB

    Two Freigeist Fellows are conducting research at the HZB Institute for Methods of Material Development through support received from the Volkswagen Foundation. Theoretical chemist Dr. Annika Bande is modelling fast electron processes, while Dr. Tristan Petit is investigating carbon nanoparticles. Annika Bande has now been awarded an ancillary grant of an additional 150,000 Euros from the Volkswagen Foundation to fund another doctoral student position for three years. The doctoral research will connect the two Freigeist research projects with one another. [...]

  • NEWS      27.07.2016

    Topping-out ceremony for new accelerator hall at HZB

    The shell for the bERLinPro building – the test facility for an energy-recovery linear accelerator at Helmholtz-Zentrum Berlin – is now complete. The extremely complex structure was erected at the Wilhelm Conrad Röntgen Campus of HZB in Berlin-Adlershof in just ten months. The topping-out ceremony took place on July 27, 2016 at 13:00 in the presence of construction firms, guest VIPs, and HZB staff. [...]

  • <p>A section from the crystal lattice of Calcium-chromium oxide showing how the spins are subject to conflicting demands. In this ball-and-stick model, the green and red sticks connecting the atoms (grey and black balls) represent ferromagnetic interactions while the blue sticks represent anti-ferromagnetic interactions. </p>SCIENCE HIGHLIGHT      25.07.2016

    Novel state of matter: Observation of a quantum spin liquid

    A novel and rare state of matter known as a quantum spin liquid has been empirically demonstrated in a monocrystal of the compound calcium-chromium oxide by team at HZB. What is remarkable about this discovery is that according to conventional understanding, a quantum spin liquid should not be possible in this material. A theoretical explanation for these observations has now also been developed. This work deepens our knowledge of condensed matter and might also be important for future developments in quantum information. The results have just been published in Nature Physics. [...]

  • <p>Design &amp; Rendering: DGI Bauwerk</p>NEWS      25.07.2016

    Invitation - Topping-out ceremony for new accelerator hall at HZB

    The shell for the bERLinPro building – the test facility for an energy-recovery linear accelerator at Helmholtz-Zentrum Berlin – is now complete. The extremely complex structure was erected at the Wilhelm Conrad Röntgen Campus of HZB in Berlin-Adlershof in just ten months. The topping-out ceremony will take place on July 27, 2016 at 13:00 in the presence of construction firms, guest VIPs, and HZB staff. [...]

  • NACHRICHT      22.07.2016

    Klangkunst im Speicherring, Ausstellung im Rohbau: Der Juli steht ganz im Zeichen der Kunst am HZB

    Malerei, Installation, Foto, Video, Performance: Studierende und bereits etablierte Kunstschaffende stellen in der unterirdischen Teilchenbeschleunigerhalle bERLinPro aus. Das Helmholtz-Zentrum Berlin (HZB) als Bauherr, DGI Bauwerk als Architekten und der Kurator Enno Wallis laden unter dem Titel SPEED zu einer außergewöhnlichen Kunstausstellung ein. Sie wird am Freitag, den 29. Juli um 19 Uhr eröffnet und wird dann für zwei Tage bis zum 31. Juli zu sehen sein. Am Sonntag wird um 15:00 Uhr der TIBES ART AWARD II verliehen - ein Kunstpreis, der an drei Aussteller geht. Der erste Preis wird von DGI Bauwerk gestiftet. Der Eintritt ist frei.

  • <p><strong>Blick in die unterirdische Beschleunigerhalle:</strong> Sie verwandelt sich f&uuml;r drei Tage in einen Ausstellungsort f&uuml;r Kunst. Foto: HZB/S.Zerbe</p>NACHRICHT      22.07.2016

    Kunstausstellung im Beschleuniger-Rohbau des HZB vom 29. bis 31. Juli

    Malerei, Installation, Foto, Video, Performance: Studierende und bereits etablierte Kunstschaffende stellen in der unterirdischen Teilchenbeschleunigerhalle bERLinPro aus. Das Helmholtz-Zentrum Berlin (HZB) als Bauherr, DGI Bauwerk als Architekten und der Kurator Enno Wallis laden unter dem Titel SPEED zu einer außergewöhnlichen Kunstausstellung ein. Sie wird am Freitag, den 29. Juli um 19 Uhr eröffnet und bis zum 31. Juli zu sehen sein. Der Eintritt ist frei.

  • NEWS      21.07.2016

    HZB experts at the Parliamentary Evening of the Deutsche Physikalische Gesellschaft

    Helmholtz-Zentrum Berlin, as a major German research institute for energy research, took part in the Parliamentary Evening of the Deutsche Physikalische Gesellschaft (DPG). Prof. Dr. Bernd Rech of the HZB Institute for Silicon Photovoltaics was the scientific director for the event. The patron of the evening dedicated to “The Energy of Tomorrow and Beyond” was Edelgard Bulmahn, Vice-President of the German Bundestag. [...]

  • <p>&nbsp;Gerriet K. Sharma is setting up the icosahedral loudspeaker, photo: Kristijan Smok (izlog)</p>NEWS      12.07.2016

    Sound artist Gerriet K. Sharma designs sound sculptures of BESSY VSR

    From 13 to 19 July 2016, the artist will be recording sounds on location [...]

  • <p>The X-ray diffraction devices at HZB in the X-ray CoreLab are available to all scientists. </p>NEWS      11.07.2016

    X-ray CoreLab now in operation and available

    All regular HZB scientists as well as visiting scientists can now use the diverse X-ray diffractometry equipment at the X-ray CoreLab, effective immediately. Each instrument is up-to-date with the latest versions of hardware & software and specialised for certain investigations. Instrument time will be allocated via the Online Calendar. [...]

  • <p>Prof. Klaus Lips, Prof. Emad Aziz and Dr. Alexander Schnegg (f.l.t.r) have been awarded with adjunct professorships by Monash-University.</p>NEWS      07.07.2016

    Monash University awards three HZB-scientist with adjunct professorships

    Cooperation between Helmholtz-Zentrum Berlin (HZB) and Monash University, Melbourne, Australia, is thriving. Now, Monash University has awarded three HZB-scientists with adjunct professorships: Prof. Klaus Lips, Dr. Alexander Schnegg and Prof. Emad Aziz have been working several years already with Prof. Leone Spiccia, an internationally renowned chemist at Monash University, on energy materials science. [...]

  • <p>Research in a context of art: visitors at the opening of the exhibition.</p>NEWS      01.07.2016

    event note: Thomas Struth presents a photography of BESSY II at Martin-Gropius-Bau Berlin

    Thomas Struth is internationally considered one of the most important artists of his generation. For the first time, his work will be displayed at the Berliner Martin-Gropius-Bau. The exhibition will feature approximately 37 large-format photographs from the years 2005 through 2016. Right at the entrance, the large-scale work "Measuring, Helmholtz-Zentrum, Berlin 2012" is placed. The exhibition can be visited until 18 September. [...]

  • <p>Opening Ceremony of the CIGSTech Workshop</p>
<p>Photo: Zentrum f&uuml;r Sonnenenergie- und Wasserstoff-Forschung Baden-W&uuml;rttemberg (ZSW)</p>NEWS      01.07.2016

    Helmholtz-Zentrum Berlin at European Photovoltaic Solar Energy Conference

    On 23rd June, Helmholtz-Zentrum Berlin and the ZSW jointly organised the IW-CIGSTech 7 as a side event of the EU-PVSEC Conference in Munich. About 150 international attendees, mainly from Europe, Asia and North America came together to get an extensive overview of the latest CIGS scientific and technological developments in CIGS thin-film solar cells and their industrial applications worldwide. [...]

  • <p>Here you find the <a href="https://www.helmholtz-berlin.de/mediathek/bildarchiv/pincollection.jspx?collectionName={95770378-0dfd-42a0-9b7d-63d5e42d3048}#1467098954837_0"> Picture Gallery</a>; </p>NEWS      28.06.2016

    Picture Gallery: Lange Nacht der Wissenschaften at HZB

    It was an exciting evening: 4000 visitors came to HZB during the „Lange Nacht der Wissenschaften”. Our photographer Phil Dera caught the best moments of this evening with his camera. Please take a look:  Here you find our Picture Gallery. [...]

  • NEWS      27.06.2016

    Data policy finalized for research data at HZB

    Researchers retain exclusive access to their data for five years [...]

  • <p>BFO has a perovskite crystal structure.</p>SCIENCE HIGHLIGHT      22.06.2016

    New effect on laser induced switching for higher data densities

    An international collaboration has now demonstrated a completely new approach to increase data density in storage media. They used ultra-short laser pulses to trigger a phase transition in the ferromagnetic material BaFeO3 (BFO). Experiments at the Femtospex facility at BESSY II of Helmholtz-Zentrum Berlin showed that by inducing this phase transition, magnetic domains can be easily manipulated. These magnetic domains are otherwise very stable and therefore suited for long-time data storage. The results have been published in Phys. Rev. Letters now. [...]

  • <p>The illustration shows how iodine (purple) is embedded between the organic layer and the metal, thus reducing adhesion. </p>SCIENCE HIGHLIGHT      22.06.2016

    User Community Science: Soft decoupling of organic molecules on metal

    An international team has discovered an elegant way to decouple organic nanosheets grown on metal surfaces. After iodine intercalation, measurements at the synchrotron source BESSY II of Helmholtz-Zentrum Berlin (HZB) showed that a network of organic molecules behaved almost as it was free-standing. The strong influence of the metal on the network was reduced. This opens up new ways to transfer organic nanostructures from metal surfaces onto more suitable substrates for molecular electronics.  The results have been published in “Angewandte Chemie”. [...]

  • <p>Scanning electron microscopy in combination with EELS electron spectroscopy permits to visualise atomic positions of the individual atoms in the heterostructure: Superconducting regions of YBaCuO are identified by yttrium (blue) and copper (pink), the ferromagnetic layers by manganese (green) and lanthanum (red). Courtesy MPI Stuttgart.</p>SCIENCE HIGHLIGHT      21.06.2016

    Coexistence of superconductivity and charge density waves observed


  • <p>Dr. Catherine Dubourdieu is an internationally recognised expert in the field of functional oxides.</p>NEWS      20.06.2016

    Talk of Dr. Catherine Dubourdieu on June 23rd 2016

    The Helmholtz-Zentrum Berlin (HZB) is boosting its energy materials research and setting up the newly established institute “Functional Oxides for Energy-Efficient Information Technology”, under the leadership of Dr. Catherine Dubourdieu. On this occasion we like to draw your attention to the talk of Dr. Catherine Dubourdieu about „Functional oxides for energy efficient information technology: from material to device“ on June 23rd at 1 pm in the lecture hall at Lise Meitner Campus Wannsee. [...]

  • <p>The model illustrates how the gold atoms sit under the graphene. <br /><br /></p>SCIENCE HIGHLIGHT      16.06.2016

    Progress in the application of spin effects in graphene: from the metal to the semiconductor world

    Graphene on silicon carbide could be an interesting candidate for future spintronik components. Squeezing gold atoms between the semiconducting substrate and graphene does enhance spin-orbit interaction at hot spots and shows ways to controll the spins. First results at BESSY II are now published in Applied Physics Letters. [...]

  • <p>The nanostructured membrane has a honeycomb pattern with nanoholes of 68 nm in diameter. The nanoholes pin down the magnetic domains.</p>SCIENCE HIGHLIGHT      14.06.2016

    Spintronics: Resetting the future of Heat Assisted Magnetic Recording

    A HZB team has examined thin films of Dysprosium-Cobalt sputtered onto a nanostructured membrane at BESSY II. They showed that new patterns of magnetization could be written in a quick and easy manner after warming the sample to only 80 °Celsius, which is a much lower temperature as compared to conventional Heat Assisted Magnetic Recording systems. This paves the way to fast and energy efficient ultrahigh density data storage. The results are published now in the new journal Physical Review Applied. [...]

  • NACHRICHT      13.06.2016

    Forschungsmagazin Sichtbar erschienen

    Eine neue Ausgabe des HZB-Forschungsmagazins Sichtbar ist erschienen. Das Magazin richtet sich an eine breite Öffentlichkeit und stellt Menschen am HZB und ihre Forschung an Energie-Materialien vor. [...]

  • <p><strong>Besucheranstrum am Elektronenspeicherring BESSY II: </strong>2900 kamen zum Schauen, Staunen und Fragen stellen. Foto: HZB/P.Dera</p>NACHRICHT      13.06.2016

    4000 Besucher bei der Langen Nacht der Wissenschaften am HZB

    Am 11. Juni 2016 strömten fast 4000 Menschen zur Langen Nacht der Wissenschaften an das Helmholtz-Zentrum Berlin am Standort Adlershof. Mitgebracht haben die Besucher viele Fragen, Neugier und Spaß am Experimentieren. Ein Besuchermagnet war der Elektronenspeicherring BESSY II, den 2900 Menschen besichtigten. Das Institut für Silizium-Photovoltaik lockte mit Laborführungen, Vorträgen und Experimente zum Thema Energie 1100 Besucher an. In einem Storify haben wir die schönsten Momente eingefangen. Außerdem gibt es eine Bildergalerie. [...]

  • <p><strong>Blick in die Experimentierhalle am Beschleuniger BESSY II:</strong> Nur zur Langen Nacht der Wissenschaften ist der Beschleunigerring f&uuml;r alle offen. Foto: HZB/M.Setzpfandt</p>NACHRICHT      08.06.2016

    Lange Nacht der Wissenschaften am 11. Juni von 17 bis 24 Uhr am HZB – Vorbeikommen und Staunen

    Wissenschaft hochaktuell – das gibt es an vielen Instituten und Universitäten wieder am 11. Juni zur Langen Nacht der Wissenschaften. Doch einen Teilchenbeschleuniger von innen bestaunen – das können die Besucher nur am HZB. Wir laden Sie herzlich ein, sich auf einen Rundgang durch BESSY II in Adlershof zu begeben. Warum braucht man solche aufwendigen Anlagen? Und wofür ist das Licht gut, das im Beschleuniger entsteht? Kommen Sie am 11. Juni vorbei – und finden Sie es selbst heraus. [...]

  • <p><span>Dentin's biological structure: tubules and mineral nanoparticles embedded in a network of collagen fibers. Image</span>: Jean-Baptiste Forien, &copy; <span>Charit&eacute;</span> &ndash; Universit&auml;tsmedizin Berlin</p>SCIENCE HIGHLIGHT      02.06.2016

    User research at BESSY II: nanostructures in human teeth

    Dentin is one of the most durable biological materials in the human body. Researchers from Charité–Universitätsmedizin Berlin were able to show that the reason for this can be traced to its nanostructures and specifically to the interactions between the organic and inorganic components. Measurements performed at BESSYII, the Helmholtz-Zentrum Berlin's synchrotron radiation source, showed that it is the mechanical coupling between the collagen protein fibers and mineral nanoparticles which renders dentin capable of withstanding extreme forces. Results from this research have been recently published in the journal Chemistry of Materials. [...]

  • <p>Hier geht es zur <a href="https://www.helmholtz-berlin.de/media/media/aktuell/print//lichtblick/150/lichtblick_juni-2016_extern_web.pdf" class="Extern">Online-Ausgabe</a>.</p>NACHRICHT      02.06.2016

    Neuer „lichtblick“ erschienen

    Ein Forscher mit Vision: Das ist der Franzose Tristan Petit. Er will synthetische Nanodiamanten entwickeln, die mit Sonnenlicht und Kohlendioxid solare Brennstoffe wie Methan produzieren. In der Titelgeschichte erzählt der Freigeist-Stipendiat aus dem Team von Emad Aziz, was er alles vorhat. [...]

  • NEWS      02.06.2016

    Call for Applications: 20 doctoral fellowships offered by Graduate School of Analytical Sciences Adlershof

    SALSA, the Graduate School of Analytical Sciences Adlershof at Humboldt-Universität zu Berlin, is announcing 20 doctoral fellowships. The program offers a structured, three-year period of multidisciplinary research combined with an integrated curriculum in Analytical Sciences. The HZB supports SALSA by supervising some PhD students. Deadline for application is June 13th, 2016. [...]

  • <p>Combining the results from radiative and non-radiative relaxation processes enabled a complete picture of the filled and unfilled energy levels to be obtained. </p>SCIENCE HIGHLIGHT      11.05.2016

    Ferrous chemistry in aqueous solution unravelled

    An HZB team has combined two different analytical methods at the BESSY II synchrotron source in order to extract more information about the chemistry of transition-metal compounds in solution. These kinds of compounds can act as catalysts to promote desirable reactions in energy materials, but their behaviour has not been completely understood thus far.  The team demonstrated how a detailed picture of the electronic states can be ascertained by systematically comparing all of the interactive electronic processes in a simple system of aqueous iron(II).  The results have now been published in Scientific Reports, the open access journal from Nature Group publishing. [...]

  • NEWS      10.05.2016

    Helmholtz Innovation Labs: HySPRINT at HZB

    HZB will be setting up the new Helmholtz HySPRINT Innovation Lab for jointly developing new combinations of materials and processes in energy applications with commercial partners. Silicon and metal-organic perovskite crystals will be the centre point of the Lab’s work. The Helmholtz Association is supporting the project for the next five years with 1.9 million Euros from its Initiative and Networking Fund, with additional contributions from HZB itself as well as from industry. [...]

  • <p>Akademie Schm&ouml;ckwitz, Berlin</p>NEWS      04.05.2016

    Autumn School on Microstructural Characterization and Modelling of Thin-Film Solar Cells

    After the successful first edition of this school in 2014, we invite you cordially to join this Autumn School to be held at Akademie Schmöckwitz, Berlin, Germany, October 9-14, 2016. Application submission will be possible until June 30, 2016. [...]

  • <p>Sebastian Schmidt demonstrating one of the CIGS-Modules. </p>NEWS      04.05.2016

    HZB receives financial support for improving the manufacturing process for CIGS solar cells


  • <p>EU PVSEC 2015</p>NEWS      29.04.2016

    Intersolar Europe / EU PVSEC / 7th IW-CIGSTech Workshop 2016 – Munich, 20-24 June 2016

    We cordially invite you to visit the HZB booth during Intersolar Europe - The world’s leading exhibition for the solar industry and its partners from 22 to 24 June 2016 in Munich, Germany. Also the online registration is open for the EU-PVSEC and we invite you to join the 7th IW-CIGSTech Workshop and Dinner on 23 June 2016, a joint meeting from HZB and ZSW organised as a parallel event of the EU-PVSEC. [...]

  • <p>The illustration depicts the characteristic spin orientation (arrows) of electrons in a topological insulator (below). Using an initial circular polarised laser pulse, the spins are excited and point up or down. This can be proven by a second linearly polarised laser pulse (above).</p>SCIENCE HIGHLIGHT      29.04.2016

    Spintronics for future information technologies: spin currents in topological insulators controlled

    An international team headed by HZB researcher Jaime Sánchez-Barriga has shown how spin-polarised currents can be initiated in a controlled manner within samples of topological insulator material. In addition, they were able to manipulate the orientation of the spins of these currents. They thereby demonstrated that this class of materials is suitable for data processing based on spin. The work has been published in the renowned periodical Physical Review B and was selected as “Editor’s Suggestion” article. [...]

  • NEWS      28.04.2016

    Helmholtz Virtual Institute International Conference "Dynamic Pathways in Multidimensional Landscapes" 2016

    We invite you to join the International Conference "Dynamic Pathways in Multidimensional Landscapes" which will take place in the heart of Berlin at the Magnus-Haus of the German Physical Society from September, 12th -16th, 2016. Now, the Online registration is open. [...]

  • <p>Eine Zitrone als Batterie. Wir zeigen wie das geht!</p>
<p>Foto: S. Kodalle</p>NACHRICHT      28.04.2016

    70 Mädchen beim Girls‘ Day am HZB

    Raus aus der Schule, rein ins Labor: Dem Aufruf folgten deutschlandweit rund 100.000 Mädchen zum bundesweiten Aktionstag „Girls‘ Day“ und wählten aus insgesamt 9.500 verschiedenen Angeboten. [...]

  • <p>Hier geht es zur Online-Ausgabe der lichtblick.</p>NACHRICHT      22.04.2016

    Neuer lichtblick: HZB-Strategie für die Zukunft, Soziale Netzwerke, Helmholtz-Laborplattform

    Das HZB schärft sein Profil. In unserer aktuellen Ausgabe stellen wir Ihnen die Strategie und Vision des HZB sowie wichtige Ziele und Handlungsfelder vor.  [...]

  • <p>The data (photon energies over time) show defects (lower signal) which disappear after 120 minutes. This happens at the transition from the copper-poor phase to the copper-rich one.</p>SCIENCE HIGHLIGHT      21.04.2016

    Thin-film solar cells: how defects appear and disappear in CIGSe-cells

    Concentration of copper plays a crucial role

    An international collaboration of German, Israeli, and British teams has investigated the deposition of thin chalcopyrite layers. They were able to observe specific defects as these formed during deposition and under what conditions they self-healed using the BESSY II X-ray source at the Helmholtz Zentrum Berlin. The results of their research provide clues to optimising fabrication processes and have now been published in Energy & Environmental Science. [...]

  • <p>Learning about solar fuels and photovoltaics goes green:  Last year&rsquo;s Quantsol students come from all over the world to meet solar energy experts in Kleinwalsertal, in the Austrian Alps. The location offers space for 56 students.</p>NEWS      14.04.2016

    Registration open: Quantsol Summer School on solar energy conversion

    Registration for Quantsol is now open! It is already the ninth time that the International Summer School on Photovoltaics and New Concepts of Quantum Solar Energy Conversion (Quantsol) will be held in September 2016 in Hirschegg, Kleinwalsertal, Austria. The school is organized by the Helmholtz-Zentrum Berlin and the Technical University of Ilmenau. Applications can be submitted through the school’s homepage until May 31st, 2016. [...]

  • <p>Illustration of the initial charge transfer step in a dye sensitized solar cell. A photon from the sun is absorbed and excites the dye molecule. Subsequently, an electron can is injected into the ZnO-Layer where it can be trapped by so called interface-states. </p>SCIENCE HIGHLIGHT      13.04.2016

    Riddle of missing efficiency in zinc oxide-based dye-sensitised solar cells solved.

    To convert solar energy into electricity or solar fuels, you need specialised systems of materials such as those consisting of organic and inorganic thin films. Processes at the junction of these films play a decisive role in converting the solar energy. Now a team at HZB headed by Prof. Emad Aziz has used ultra-short laser pulses and observed for the first time directly how boundary states form between the organic dye molecules and a zinc-oxide semiconductor layer, temporarily trapping the charge carriers. This explains why zinc-oxide (ZnO) dye-sensitised solar cells have not yet met expectations. The results evolved from collaboration between Monash University (Australia) and Joint Lab partners Helmholtz Zentrum Berlin (HZB) and the Freie Universität Berlin (FU Berlin). They have now been published online by Nature in the open access magazine Scientific Reports. [...]

  • <p>Dr. Catherine Dubourdieu is an internationally recognised expert in the field of functional oxides.</p>NEWS      12.04.2016

    Energy Materials: Dr. Catherine Dubourdieu sets up the institute “Functional Oxides for Energy-Efficient Information Technology” at the HZB

    The Helmholtz-Zentrum Berlin (HZB) is boosting its energy materials research and setting up a new institute. Through the Helmholtz Recruitment Initiative, the HZB has gained renowned researcher Catherine Dubourdieu as Institute Director. In the newly established institute “Functional Oxides for Energy-Efficient Information Technology”, she is researching into thin films of metal oxides that make especially promising candidates for information technologies of the future. Dubourdieu formerly worked at the institute “Nanotechnologies de Lyon” of the CNRS and has been at the HZB since 11 April 2016. [...]

  • <p>Foto: Wista Management GmbH</p>NACHRICHT      11.04.2016

    Veranstaltungstipp: „Battle den Horst“ – Science Slam mit HZB-Physiker am 14. April im Technologiepark Adlershof

    Der Science Slam „Battle den Horst“ geht in die nächste Runde – dieses Mal mit Beteiligung eines HZB-Kandidaten. Beim Adlershofer Science Slam am 14. April erklären Wissenschaftlerinnen und Wissenschaftler, wie effizient Solarzellen sind und wie Nanospaghetti Krebs besiegen. Sie rappen über Supraleiter und geben erste Hilfe-Tipps, um unangenehme Schweißströme zu stoppen. In nur zehn Minuten bringen die Slammer ihre Forschungsthemen auf verständliche Weise auf den Punkt. [...]

  • <p>The three-dimensional structural network of the ultra-porous and flexible material called DUT-49 can store large amounts of methane. &copy; TU Dresden, Prof. AC1</p>SCIENCE HIGHLIGHT      08.04.2016

    Energy storage materials under pressure

    Surprising discovery at BESSY II: the adsorption capacity of MOFs does not rise automatically with increasing pressure [...]

  • NEWS      04.04.2016

    Priority programme for topological insulators begins second funding period

    Applicants for support funds to conduct research on topological insulators met at HZB Adlershof on February 15th and 16th. This meeting dealt with the second period of funding for the SPP 1666 Priority programme of the German Research Foundation (DFG) that runs from mid-2016 to 2019. Researchers from across Germany contribute their specific expertise and work together in these Priority programmes (SPPs).

  • NEWS      22.03.2016

    Young scientist award for Oliver Supplie

    The Deutsche Gesellschaft für Kristallzüchtung und Kristallwachstum (DGKK) presented Oliver Supplie with the DGKK Young Scientist Award on 16 March 2016. Supplie works at the TU Ilmenau and at the HZB, and accepted the prize worth 2,500 euros during the “1st German Czechoslovak Conference on Crystal Growth”. The DGKK awarded the prize in recognition of Oliver Supplie’s outstanding work in improving our understanding of interfaces between III-V semiconductors and silicon. This is of great importance for producing high efficiency components, for example. [...]

  • <p>The illustration shows the structure of the sample: n-doped silicon layer (black), a thin silicon oxide layer (gray), an intermediate layer (yellow) and finally the protective layer (brown) to which the catalysing particles are applied. The acidic water is shown in green. </p>SCIENCE HIGHLIGHT      21.03.2016

    Solar fuels:a refined protective layer for the “artificial leaf”

    A team at the HZB Institute for Solar Fuels has developed a process for providing sensitive semiconductors for solar water splitting (“artificial leaves”) with an organic, transparent protective layer. The extremely thin protective layer made of carbon chains is stable, conductive, and covered with catalysing nanoparticles of metal oxides. These accelerate the splitting of water when irradiated by light. The team was able to produce a hybrid silicon-based photoanode structure that evolves oxygen at current densities above 15 mA/cm2. The results have now been published in Advanced Energy Materials.


  • <p>The team could observe for the first time with RIXS how the formation of hydrogen bonds does change C=O bonds in aceton molecules. </p>SCIENCE HIGHLIGHT      16.03.2016

    Measuring chemistry: local fingerprint of hydrogen bonding captured in experiments

    A team from Helmholtz-Zentrum Berlin has been able for the first time to measure how new bonds influence molecules: they have reconstructed the “energy landscape” of acetone molecules using measurement data from the Swiss Light Source (SLS) of the Paul Scherrer Institut, and thereby empirically established the formation of hydrogen bonds between acetone and chloroform molecules. The results have been published in Nature Scientific Reports and assist in understanding fundamental phenomena of chemistry. [...]

  • <p>Aafke Bronneberg in her lab at HZB Institute for Solar Fuels. </p>NEWS      29.02.2016

    Marie Curie Fellowship for Aafke Bronneberg

    Aafke Bronneberg has been working as a postdoc at the HZB Institute for Solar Fuels since summer 2013. The physicist has now received one of the sought-after European Marie Skłodowska-Curie actions Research Fellowships. The fellowship supports outstanding scientists in their post-doctoral phase. It provides for and anticipates a change in research institution and country. Aafke Bronneberg will therefore join the Dutch Institute for Fundamental Energy Research (DIFFER) in Eindhoven, Netherlands beginning February 2017. [...]

  • <p>In pure bismuth-selenide (left) no bandgap is found. With the addition of magnetic manganese (4%; 8%), a band gap (dashed line) arises, and electrical conductivity disappears. This effect shows even at room temperature and contrary to expectation, has nothing to do with the magnetism of the manganese,  which shows up only below 10 K (minus 263 Celsius). </p>SCIENCE HIGHLIGHT      19.02.2016

    Topological insulators: Magnetism is not causing loss of conductivity

    If topological insulators are doped with impurities that possess magnetic properties, they lose their conductivity. Yet contrary to what has been assumed thus far, it is not the magnetism that leads to this. This has been shown by recent experiments with BESSY II at HZB. The results are now published in Nature Communications. Understanding these effects is crucial for applications of topological insulators in information technology. [...]

  • <p>The work of Galina Gurieva, Franziska Huschmann and Alex Redinger is introduced <a href="https://www.helmholtz-berlin.de/angebote/jobskarriere/postdocs/postdoc-of-the-month_en.html" class="Extern">here. </a></p>NEWS      05.02.2016

    Hint: HZB Postdoc Association introduces a Postdoc of the Month on their webpage

    What have Galina Gurieva, Franziska Huschmann, Alex Redinger in common? They are postdocs working at HZB. For connecting each other and providing an channel for networking the HZB Postdoc Association introduces each month the work of one of the researchers at HZB-website. The young scientists write briefly about their work, their favorite paper and name the instruments and beamlines they are working with. Moreover, to get a good impression of their work they show some pictures about their laboratories, instruments and beamlines. Here you can find the interesting page of the Postdoc Association. [...]

  • <p>Sketch of the structure of both metal oxide layers. Interesting new properties can arise at the interface. </p>SCIENCE HIGHLIGHT      04.02.2016

    Metal Oxide Sandwiches: New option to manipulate properties of interfaces

    A Franco-German cooperation has investigated a sandwich system of transition metal oxides at BESSY II. The scientists discovered a new option to control properties of the interface between the two layers, for instance the amount of charge transferred from one layer to the other or the emergence of ferromagnetism.  Their insights might help to create new properties at the interface, not present in the primary materials, maybe even novel forms of High Tc superconductivity. [...]

  • <p>Preistr&auml;ger des Helmholtz-Doktorandenpreises 2015 mit Otmar D. Wiestler (Mitte), Pr&auml;sident der Helmholtz-Gemeinschaft, und Stephanie Dittmer (rechts), Bereichsleiterin Strategie/ Impuls- und Vernetzungsfonds der Helmholtz-Gemeinschaft, auf dem Neujahrsempfang 2016. Foto: Simone M. Neumann/helmholtz</p>NACHRICHT      28.01.2016

    Matthias May mit dem Doktorandenpreis der Helmholtz-Gemeinschaft ausgezeichnet

    Dr. Matthias May erforschte in seiner Promotion am Helmholtz-Zentrum Berlin (HZB), wie man mit Sonnenlicht noch effizienter Wasser spalten und in Form von Wasserstoff speichern kann. Für seine Arbeit erhielt er am 27. Januar 2016 den mit 5.000 Euro dotierten Doktorandenpreis der Helmholtz-Gemeinschaft. May forscht seit Januar 2016 als Postdoktorand an der Universität Cambridge. [...]

  • <p>Nano-island of graphene in which iron-nitrogen complexes are embedded. The FeN<sub>4</sub> complexes (shown in orange) are catalytically active. </p>SCIENCE HIGHLIGHT      27.01.2016

    An alternative to platinum: iron-nitrogen compounds as catalysts in graphene

    Teams at HZB and TU Darmstadt have produced a cost-effective catalyst material for fuel cells using a new preparation process which they analysed in detail. It consists of iron-nitrogen complexes embedded in tiny islands of graphene only a few nanometres in diameter. It is only the FeN4 centres that provide the excellent catalytic efficiency – approaching that of platinum. The results are interesting for solar fuels research as well and have been published in the Journal of the American Chemical Society. [...]

  • <p>Flexible CIGS module. Photo </p>SCIENCE HIGHLIGHT      26.01.2016

    The solar technologies race: thin-film photovoltaics are catching up

    ZSW and HZB present current data – with new    opportunities for Europe’s solar industry [...]

  • <p>Vertical cut through a quadrupole magnet: Black: Field distribution at a fixed vertical distance to the midplane. Magenta: Electron trajectories for various initial coordinates. </p>SCIENCE HIGHLIGHT      20.01.2016

    A Fast Way of Electron Orbit Simulation in Complex Magnetic Fields

    The design  of  advanced synchrotron radiation sources requires precise  algorithms  for the  simulation of electron trajectories in  complex magnetic fields. However, multi-parameter studies can  be very time consuming. Now, a team of the HZB has developed a new algorithm which significantly reduces the computation time.  This approach is now published in the renowned journal “Physical Review Special Topics Accelerator & Beams”. [...]

  • NEWS      07.01.2016

    MacQueen is researching into optical energy converters for generating fuels: Funding through the Helmholtz Postdoc Programme

    Dr. Rowan W. MacQueen will come in spring 2016 to the Helmholtz-Zentrum Berlin (HZB) and will receive funding for his research project through the Helmholtz Postdoc Programme. He will be studying the optoelectronic properties at the boundaries of thin organic layers to oxides. These are relevant in developing optical energy converters for generating fuels. The “Helmholtz Postdoc Programme” will fund the Australian researcher with 100,000 Euro annually for a period of up to three years.  [...]

  • <p>Sketch of the tandem cell. </p>SCIENCE HIGHLIGHT      07.01.2016

    Optimum band gap for hybrid silicon/perovskite tandem solar cell

    Tandem solar cells based on silicon and perovskites have raised high hopes for future high efficiency solar modules.  A team led by perovskite solar cell pioneer Henry Snaith at the University of Oxford has now shown, with contributions by Bernd Rech and Lars Korte of the Helmholtz-Zentrum Berlin, that an ultimate efficiency of 30% should be attainable with such tandem cells. They discovered a structurally stable perovskite composition with its band gap tuned to an optimum value of 1.75 eV. The results have been published in "Science". [...]

  • <div id="infowindow_7baf4b2e2c_2d5f6a_2d11d2_2d8f20_2d0000c0e166dc_7d" class="infowindow_7baf4b2e2c_2d5f6a_2d11d2_2d8f20_2d0000c0e166dc_7d infoValueContainer">
<div class="readOnlyInfoValue">Dr. Kathrin Aziz-Lange</div>
<div class="readOnlyInfoValue">Foto: HZB / B. Schurian&nbsp;</div>
</div>NEWS      01.01.2016

    Helmholtz-Zentrum Berlin expands its solar fuel research: Kathrin Aziz-Lange starts with her new Helmholtz Young Investigator Group

    Dr. Kathrin Maria Aziz-Lange has won approval to set up a Helmholtz Young Investigator Group (YIG) addressing the topic of solar fuels at Helmholtz-Zentrum Berlin (HZB). She will receive 250,000 Euros in annual support for a period of five years, with half from the Initiative and Networking Fund of the Helmholtz Association and half financed by HZB. The YIG will investigate materials that enable water splitting using sunlight and thereby store solar energy chemically in form of hydrogen. [...]

  • <p>Composite Raman intensity-distribution map on a polycrystalline CuInSe<sub>2</sub> thin film.</p>SCIENCE HIGHLIGHT      18.12.2015

    Alternative method for the representation of microstructures in polycrystalline materials

    Also Raman microspectroscopy in an optical microscope provides the means to determine local crystal orientations of polycrystalline materials over large sample areas. This method can be used alternatively to electron backscatter diffraction in a scanning electron microscope. It was shown by a team from Helmholtz-Zentrum Berlin and the Federal Institute for Materials Research and Testing (BAM) that both characterization techniques result in similar orientation distribution maps on areas of several hundreds of square micrometers. [...]

  • <p>Das Berliner Buffet nach der Postersession am Donnerstagabend dauerte noch bis sp&auml;t in die Nacht. </p>NACHRICHT      16.12.2015

    Posterpreise beim Usermeeting

    Vom 9. bis 11. Dezember haben sich über 320 Wissenschaftlerinnen und Wissenschaftler aus der Nutzerschaft und dem HZB getroffen, um sich über die Forschung und Instrumentierung an BESSY II und BER II auszutauschen. Dabei wurden auch Posterpreise vergeben.

  • <p>Dr. Robert Streubel (rechts) zusammen mit Prof. Mathias Richter vom Freundeskreis Helmholtz-Zentrum Berlin w&auml;hrend der Verleihung des Ernst-Eckhard-Koch-Preis am 10. Dezember 2015 in Berlin-Adlershof.</p>NACHRICHT      16.12.2015

    Ernst-Eckhard-Koch-Preis und Innovationspreis Synchrotronstrahlung

    Am 10. Dezember 2015 vergab der Freundeskreis Helmholtz-Zentrum Berlin zum 25. mal den Ernst-Eckhard-Koch-Preis für eine herausragende Promotionsarbeit auf dem Gebiet der Forschung mit Synchrotronstrahlung. Die Preisverleihung fand während des 7. BER II und BESSY II Nutzertreffens statt. [...]

  • <p>Hier geht's zur <a href="https://www.helmholtz-berlin.de/media/media/aktuell/print//lichtblick/141/hzb_lichtblick_dezember-2015_extern_web.pdf" class="Extern">Ausgabe Dezember 2015</a></p>NACHRICHT      15.12.2015

    Neuer Lichtblick erschienen

    Eine drei Viertel Million hat Annika Bande eingeworben und ist damit an das HZB gekommen. Bei ihrer Forschung zeigt sie sich experimentierfreudig und probiert als Grenzgängerin zwischen Physik und Chemie ganz neue Ideen aus. In der Titelgeschichte erzählt die 36-jährige Mutter von zwei Kindern, warum das Festklammern an Standardabläufen nicht ihr Ding ist. [...]

  • <p>2. Platz Publikumspreis<br />Foto<br />Titel: "The elephant"</p> <p></p>NACHRICHT      14.12.2015

    Ausstellung bei BESSY II: Die besten Bilder vom HZB Science Photo Walk

    Die 20 besten Bilder vom HZB Science Photo Walk sind ab sofort bis Ende März 2016 in einer Ausstellung bei BESSY II für die Öffentlichkeit zu besichtigen. Am 15. Dezember 2015 wurden die Preise bei der Vernissage an die Fotografen im Namen der Jury übergeben.  [...]

  • <p>x-ray diffraction on pure 4T, colored for chrismas reasons. </p>SCIENCE HIGHLIGHT      14.12.2015

    Doped organic semiconductors explored

    Organic semiconductor materials are already being employed today in solar cells and organic LEDs (OLEDs) amongst others. Until now, however, little was known about how the doping molecules are integrated into the chemical structure of organic semiconductors. The Molecular Systems Joint Research Team of the Helmholtz-Zentrum Berlin and Humboldt-Universität zu Berlin at BESSY II have now analysed this with surprising results. The molecules are not necessarily uniformly dispersed in the host lattice, as it is usual with inorganic semiconductors, but instead form what are known as co-crystallites. The doped organic semiconductor consists of a matrix of undoped crystallites in which such “mixed crystallites” are embedded. It is this very species that takes over the role as the actually doping molecule. The results were published in Nature Communications.

  • <p>Participants of the European Workshop on Nanophotonics for Solar Energy. </p>NEWS      11.12.2015

    European Workshop on Nanophotonics for Solar Energy

    On 25 and 26 November 2015, about 40 researchers from seven European countries visited Helmholtz-Zentrum Berlin to attend the “European Workshop on Nanophotonics for Solar Energy”. [...]

  • <p>MXcuBE Meeting from 1st - 2nd of December 2015 at Alba, Barcelona. The meetings make sure that the devenlopment of MXcuBE3 closly fits to the needs of the users.&nbsp;</p>
<p>Photo: <span>Jordi Juanhuix/ALBA</span></p>NEWS      09.12.2015

    Common platform for macromolecular crystallography at European synchrotrons

    Researchers use high-intensity X-ray light from synchrotron radiation sources to decipher the structures of biological molecules and thus the blueprints of life. A cooperation agreement has been effective since 2012 to establish common software standards at several European sources. Its aim: The eight synchrotrons involved want to create user-friendly, standardised conditions at the 30 experimental stations for macromolecular crystallography, which will greatly facilitate the work of research groups. In the new project “MXCuBE3”, the existing software platform is being adapted to include the latest developments in technology. [...]

  • NEWS      09.12.2015

    Invitation to the HZB Science Slam: TODAY at 18.30 o’clock in Adlershof

    We invite you to the HZB Science Slam that takes place today at 18.30 o’clock at the Melli Beese Kabinett (Adlershof Forum). Three scientists present their topics in an understandable, entertaining and concise way and, moreover, in only 10 minutes. The audience is the judge and jury, voting using numbered cards. This participation provokes discussion as they begin to talk about science and the presentation. The Science Slam is part of the HZB User Meeting.

  • <p>Usermeetings offer a platform for exchange and communication. </p>NEWS      07.12.2015

    Three days for exchange between Users of BESSY II and BER II and HZB-scientists

    The Seventh Joint BER II and BESSY II User Meeting will take place at WISTA, Berlin-Adlershof on December 9th and 10th, the neutrons session are at Berlin-Wannsee on December 11th. The Verein Freundeskreis Helmholtz-Zentrum Berlin e.V. will bestow the Innovation Award and the Ernst-Eckart-Koch Prize. Public highlights are a science slam on Wednesday, 18:30 and the public lecture by David Cahen on the power of science to bridge ideological differences (“Science: Bridge over troubled water“, Thursday 17:00). The public lecture and the science slam are open for everybody. [...]

  • <p>Gewinnerbild und 3. Platz Publikumspreis<br />Titel: "Weltraum"<br />Foto: Holger Fehsenfeld</p>NACHRICHT      01.12.2015

    HZB Science-Photowalk - Holger Fehsenfeld gewinnt mit "Weltraum" Foto

    Zum zweiten Mal lud das Helmholtz-Zentrum Berlin am 6. November 2015 Hobbyfotografen zu einem Fotospaziergang durch die Labore und den Elektronenspeicherring ein. 47 Fotografen haben fast 200 Wettbewerbsbilder eingereicht.  Aus diesen hat eine Jury Top 20 Fotos ausgewählt. Das Siegerbild mit dem Titel „Weltraum" hat Holger Fehsenfeld aufgenommen. [...]

  • <p>Nanostructures of silicon shown in scanning electron microscope image. The diameter of the nanocolumns is 570 nm. By comparison, the nanocones taper from their upper diameter of 940 nm down to 360 nm at their base. </p>SCIENCE HIGHLIGHT      26.11.2015

    Whispering gallery modes in Silicon nanocones intensify luminescence

    Silicon, a semiconducting material, reveals new talents when reduced to nanoscopic dimensions. A joint team at the HZB Institute of Nanoarchitectures for Energy Conversion and the Max Planck Institute for the Science of Light (MPL) has demonstrated this. Silicon nanocones generate 200 times as much infrared luminescence as comparably sized nanocolumns when excited by visible light. Modelling and experimental results show that due to their geometry, cones are able to sustain what is referred to as whispering gallery modes at infrared wavelengths which can intensify the silicon luminescence. New applications are conceivable, including silicon-based nanolasers. [...]

  • <p>On stage for the PVSEC-25 Paper Awards. Jan-Peter B&auml;cker (1. on left side) and Marc Daniel Heinemann (5. on left side).</p>NEWS      26.11.2015

    PVcomB-25 paper awards for two HZB-Contributions

    At the 25th International Photovoltaic Science & Engineering Conference (PVSEC) two papers from the HZB-Institute PVcomB have been awarded: Jan-Peter Bäcker and Marc Daniel Heinemann received the PVSEC-25 Paper Award for their research on chalcogenide solar cells (CIGS). The PVSEC was held from 15. to 20. November in Busan, Korea. [...]

  • NEWS      19.11.2015

    Distinguished Lectures at HZB: Prof. T. Krauss will talk about Photovoltaics and Photonic nanostructures

    Solar power has the highest potential among all renewable energy sources, it is clean and practically inexhaustible. Despite the already very high performance of silicon solar cells with 25% efficiency and low costs, a lot of research is yet required in order to realise the vision of a solar-powered society. Can we reduce module cost by integrating solar cells into buildings? Can we improve efficiency without increasing cost, by adding low-cost materials such as perovskites? What role can photonic nanostructures play to help control the flow of light? [...]

  • <p>Sketch of the new set-up at EDDI. The high-speed camera (blue box) is on top of the sample holder. </p>NEWS      19.11.2015

    Filming microscopic and macroscopic changes within materials

    The EDDI beamline at BESSY II is now offering even more options. It has recently become possible to also obtain high-resolution three-dimensional images of microscopic structure with it, up to four such tomographies per second are possible. X-ray diffraction (energy-dispersive diffraction) can simultaneously be carried out to draw conclusions about the crystal structure of the material just as before. [...]

  • <p>Photo: HZB/M. Setzpfandt</p>NEWS      18.11.2015

    ZEISS and the Helmholtz Zentrum Berlin establish partnership

    Nanotechnology in support of leading research on renewable energy [...]

  • <p>Anziehend oder absto&szlig;end? Viel Spa&szlig; hatten die Sch&uuml;lerinnen und Sch&uuml;ler mit der mit Magneten best&uuml;ckten Duplo-Eisenbahn. Foto: HZB/S.Zerbe</p>NACHRICHT      17.11.2015

    Helmholtz-Tag im HZB-Schülerlabor

    Die Schülerlabore der Helmholtz-Gemeinschaft veranstalten am 17. November zum vierten Mal den Helmholtz-Tag. Mit dabei ist auch das Helmholtz-Zentrum Berlin. Schülerinnen und Schüler erhalten einen Einblick in die Forschungsarbeit von Hermann von Helmholtz und können in den Laboren selbst experimentieren. Der Namenspatron der Helmholtz-Gemeinschaft gehörte zu den bedeutendsten Naturwissenschaftlern des 19. Jahrhunderts. [...]

  • <p>Kunst und Wissenschaft - ein inspirierendes Duo. Physiker Paul Goslawski (HZB) tr&auml;gt bei der Ausstellung der K&uuml;nstlerin Alicja Kwade vor.</p>NACHRICHT      17.11.2015

    HEUTE: Kunst und Wissenschaft - Dr. Paul Goslawski trägt am 17. November 2015 im Haus am Waldsee vor

    Kunst und Wissenschaft gehören auf dem ersten Blick nicht unbedingt zusammen, dennoch verbindet beide Welten viel. Dr. Paul Goslwaski, Beschleunigerforscher am HZB, trägt im Rahmen der Ausstellung "Alicja Kwade – Monolog aus dem 11ten Stock" im Haus am Waldsee vor. Dabei arbeitet er Berührungspunkte zwischen Kunst und seiner Forschung heraus: Er spricht über Beschleuniger, Kommunikation und Physik – und über das Beste, was die Physik zu bieten hat. Das Haus am Waldsee zählt zu den führenden Austellern für internationale zeitgenössische Kunst in Deutschland. [...]

  • <p>Prof. Andreas Jankowiak beim Spatenstich f&uuml;r bERLinPro</p>NACHRICHT      13.11.2015

    rbb-Inforadio: Andreas Jankowiak im Gespräch über bERLinPro

    Die Baustelle für bERLinPro fällt auf. Sie ist auch dem Wissenschaftsredakteur des rbb-Inforadio, Thomas Prinzler, nicht entgangen. Und so kam es zu einem kurzweiligen Gespräch, in dem Andreas Jankowiak die Herausforderungen des Projekts erläutert. Hohe Ströme, hohe Emitanzen - viel Physik. Aber auch die Anforderungen an die Gebäudeplanung kamen zur Sprache. Und die Synergie zu BESSY-VSR. Nachzuhören im Inforadio-Gespräch vom 8. November. [...]

  • <p>Charge carriers in polymeric carbon nitrides always take paths perpendicular to the sheets, as Merschjann&rsquo;s group has now shown. Light creates an electron-hole pair. The opposite happens when an electron and hole meet under certain conditions (forming a singlet exciton) and emit light (fluorescence). A graphene lattice is shown in the background.</p>NEWS      12.11.2015

    New class of materials for organic electronics:

    Joint project details charge transport in polymeric carbon nitride for first time

    Polymeric carbon nitride is an organic material with interesting optoelectronic properties. As an inexpensive photocatalyst, it can be used to facilitate water splitting using sunlight. Joint research by Helmholtz-Zentrum Berlin, the University of Rostock, Freie Universität Berlin as well as other partners has now investigated for the first time how light creates charge carriers in this class of materials and established details about charge mobility and lifetimes. They discovered surprising characteristics in their investigations that provide prospects for new applications, in conjunction with graphene for example. [...]

  • <p>The picture illustrates a hypothetical highway with the second path winding around the first one. Experimenters at the beamlines could then either use the dense sequence of light pulses from the primary electron path or select individual light pulses from the secondary orbital track.  </p>NEWS      11.11.2015

    BESSY II electron highway gets second lane

    The particle accelerator team at Helmholtz-Zentrum Berlin (HZB) has demonstrated that BESSY II, the 3rd generation synchrotron radiation source in Berlin, can be operated with not just one, but two simultaneous electron paths. By precisely tuning the magnetic components, physicists can create an additional orbital path. Packets of electrons can travel along it and emit intense light pulses at the experiment stations. This could provide the user community with the option to select light pulses from either path as needed in their experiments. The newly developed orbital mode has already been stably implemented and initial tests at the experiment stations (beamlines) show promising results. HZB is the first to enter this new territory and at the same time has reached another milestone in its pioneering BESSY-VSR project. [...]

  • NEWS      10.11.2015

    Uppsala Berlin Joint Laboratory “Our willingness to cooperate is our strength”

    Great political interest for the new Uppsala Berlin Joint Laboratory (UBjL): On the 4th of November, Sweden’s ambassador in Germany, Dr. Lars Danielsson, came personally to the HZB where the UBjL is established for the inauguration of the joint project. [...]

  • NEWS      06.11.2015

    50 amateur photographers participate in the Science Photowalk at Helmholtz-Zentrum Berlin

    BESSY II is an amazing location for scientists from all over the world. But today, it will be amazing for more than 50 amateur photographers, too. The Helmholtz-Zentrum Berlin (HZB) invites them to participate on 6. November 2015 in a Science-Photowalk at BESSY II. They will get unique opportunities during a guided tour through the storage ring and you could capture your very personal perspective on science, big instruments and small details. [...]

  • <p>Waiting for remaoval: the old cavities. (HZB, W. Anders)</p>NEWS      05.11.2015

    Shutdown at BESSY II: An extremely productive break

    From the end of October to the middle of January, no electrons will circulate in the synchrotron ring BESSY II. “We shut down BESSY II at the beginning of the last October week, as planned,” says Dr. Christian Jung, head of the main department Scientific-Technical Infrastructure II. “We plan to carry out extensive maintenance and setup work, so we will be working on BESSY II day and night for close to three months. In mid-January 2016, the radiation source will be available once again to users – more powerful than ever.” [...]

  • NACHRICHT      02.11.2015

    Helmholtz-Zentrum Berlin auf der Jahrestagung des Forschungsverbunds Erneuerbare Energie (FVEE)

    Vom 3. Bis 4. November 2015 findet die Jahrestagung des Forschungsverbunds Erneuerbare Energie (FVEE) im Umweltforum Berlin in Berlin statt. Schwerpunktthema ist in diesem Jahr die Wärmewende. Das Helmholtz-Zentrum Berlin ist mit einem Infostand und Vorträgen präsent. [...]

  • <p>A cross section through the tandem cell is shown by this SEM-image. </p>SCIENCE HIGHLIGHT      28.10.2015

    Monolithic perovskite/silicon tandem solar cell achieves record efficiency

    Teams from the Helmholtz-Zentrum Berlin and École Polytechnique Fédérale de Lausanne, Switzerland, have been the first to successfully combine a silicon heterojunction solar cell with a perovskite solar cell monolithically into a tandem device. The hybrid tandem cell showed an efficiency of 18 per cent. That is the highest currently reported value for this type of device architecture. There are even prospects for the efficiency to reach as much as 30 per cent. [...]

  • NEWS      22.10.2015

    Science Photowalk at Helmholtz-Zentrum Berlin

    Helmholtz-Zentrum Berlin (HZB) invites you to participate on 6. November 2015 in a Science-Photowalk at BESSY II. If you love to take photographies of unconventional objects, you will get unique opportunities during a guided tour through the storage ring and you could capture your very personal perspective on science, big instruments and small details. There is a limited number of places, participation is for free, the best pictures will be awarded. Please apply until 2. November 2015. [...]

  • <p>Prof. Liane Benning im  <a href="http://www.helmholtz.de/erde_und_umwelt/ein-workaholic-mit-gespuer-fuer-schnee-4886/" class="Extern"> Portrait</a>, photo </p>NEWS      21.10.2015

    Liane Benning (GFZ) talks about „The Birth and Life Cycle of a Nanoparticle: or how to make crystals from ions”

    20 years Helmholtz Association – a series of lectures shows the variety of the research field [...]

  • <p>Markus Kubin in front of his poster. </p>NEWS      20.10.2015

    Poster award to Markus Kubin

    At the International Conference on X-Ray Absorption Fine Structure Markus Kubin has been selected to receive one out of five poster awards. More than 300 posters have been presented at the poster session. [...]

  • <p>Methan hydrate is found under extreme conditions in the deep sea and becomes "burning ice" in contact with air. &copy; Science Party SO174/GEOMAR Helmholtz-Zentrum f&uuml;r Ozeanforschung Kiel.</p>NEWS      20.10.2015

    D-Lecture with Metin Tolan: “Burning Ice” - synchrotron radiation reveals how molecules are captured in hydrates

    Most of the carbon on earth is stored as methane-hydrate in deep sea areas (so-called "burning ice”). Prof. Metin Tolan, Technische Universität Dortmund, will show new data from synchrotron experiments, which unveil the process of hydrate formation for the first time, thus addressing a burning topic of energy and climate research. [...]

  • <p>Simone Raoux is a professor at the Department of Physics at HU Berlin and is happy to show students the workings of BESSY II.</p>NEWS      19.10.2015

    Simone Raoux becomes a Professor at Humboldt-Universität zu Berlin

    Prof. Dr. Simone Raoux has accepted the call to the W3-S professorship “Nanospectroscopy for Design and Optimisation of Energy-Related Materials” in the Department of Physics at Humboldt-Universität zu Berlin. The professorship is associated with heading the institute of the same name at the Helmholtz-Zentrum Berlin für Materialien und Energie. Prof. Raoux accepted the call in September 2015. [...]

  • <p><strong>Happy Birthday, School Lab!</strong> Ulrike Witte and Gabriele Lampert (both HZB staff) cut the birthday cake for the guests and employees.</p>NEWS      15.10.2015

    Five years of the School Lab in Adlershof

    To get school students interested in science, to show them the points of contact between research and everyday life – this is the mission of the HZB School Lab. Today, it celebrates its fifth anniversary at Adlershof. Since its founding in October 2010, more than 5,500 school students have come to perform experiments at the premises on Magnusstraße in Adlershof. [...]

  • <p>The SiO<sub>2</sub> nanoparticles (black) have been imprinted directly on the Molybdenum substrate (purple) which corresponds to the back contact of the solar cell. On top of this structured substrate the ultrathin CIGSe layer (red) was grown at HZB, and subsequently all the other layers and contacts needed for the solar cell. Since all layers are extremely thin, even the top layer is showing deformations according to the pattern of the nanoparticles.  </p>SCIENCE HIGHLIGHT      15.10.2015

    Scientists demonstrate how to improve ultrathin CIGSe solar cells by nanoparticles

    CIGSe solar cells  are made of a thin chalcopyrite layer consisting of Copper, Indium, Gallium and Selenium and can reach high efficiencies. Since Indium is becoming scarce and expensive, it is interesting to reduce the active CIGSe layer, which however decreases the efficiency quite strongly.  Now, scientists at Helmholtz-Zentrum Berlin have produced high quality ultrathin CIGSe layers and increased their efficiency by an array of tiny nanoparticles between the back contact and the active layer. [...]

  • <p>Prof. Martha Lux-Steiner has been awarded by the European Association for Renewable Energy (EUROSOLAR) for her work and involvement in research and education with the German Solar Prize. </p>NEWS      13.10.2015

    German Solar Prize for scientist for Martha Lux-Steiner

    Renowned physicist Prof. Martha Lux-Steiner, a scientist at Helmholtz-Zentrum Berlin and Freie Universität Berlin, has received the German Solar Prize for 2015. The European Association for Renewable Energy (EUROSOLAR) recognised her lifetime of work and involvement in research and education with the award. [...]

  • <p>The perovskite film (black, 200-300 nm) is covered by Spiro.OMeTAD, Graphene with gold contact at one edge, a glass substrate and an amorphous/crystalline silicon solar cell. </p>SCIENCE HIGHLIGHT      02.10.2015

    Graphene as a front contact for silicon-perovskite tandem solar cells

    HZB team develops elegant process for coating fragile perovskite layers with graphene for the first time. Subsequent measurements show that the graphene layer is an ideal front contact in several respects. [...]

  • <p>Typische Unterhaltung &uuml;ber BESSY II im Puppentrick</p>NACHRICHT      01.10.2015

    Science-Video Wettbewerb: Der vom HZB eingereichte Beitrag aus dem Happy Undulator ist einer der Finalisten.

    Jetzt gilt‘s: bitte teilen, kommentieren und voten. Der von Wissenschaft im Dialog durchgeführte Video-Wettbewerb „Fast Forward Science 2015“ geht in die heiße Phase. 109 Videos sind bis zum Stichtag 31. Juli eingereicht worden, von denen eine Jury nun 17 Beiträge fürs Online-Voting ausgewählt hat, darunter der vom HZB eingereichte Beitrag „Bessy II: What can I do for you?“. Gefragt waren in dem Wettbewerb Wissenschaftsvideos, die zugleich unterhalten, wissenschaftlich fundiert und verständlich sind. [...]

  • <p><strong>Lernen mit Blick auf die Alpen:</strong> 53 Teilnehmende aus aller Welt lernten bei der Quantsol-Sommerschule Grundlagen der Photovoltaik und solaren Brennstofferzeugung. Foto: HZB</p>NACHRICHT      30.09.2015

    Quantsol Sommerschule 2015 – erfolgreich im 8. Jahr

    Die International Summer School on Photovoltaics and New Concepts of Quantum Solar Energy Conversion (Quantsol) fand vom 6. bis 13. September 2015 zum achten Mal in Folge im österreichischen Hirschegg/Kleinwalsertal statt. Über 50 angehende Solarforscherinnen und -forschern aus 19 Ländern besuchten die Veranstaltung. [...]

  • <p>Staunende Gesichter im Kontrollraum des BESSY II. Foto: A. Kubatzki</p>NACHRICHT      30.09.2015

    Tage der Forschung in Adlershof

    Am 24. und 25. September fanden in Adlershof die diesjährigen Tage der Forschung statt. Schülerinnen und Schüler der gymnasialen Oberstufe aus Berlin und Brandenburg bekamen die Möglichkeit, Forschungseinrichtungen am Wissenschaftsstandort Adlershof zu besichtigen. Das HZB bot vier Schülergruppen einen spannenden Einblick in die Welt der Forschung. [...]

  • <p>2.500 experts on photovoltaics from all over the world met at the 31th EU PVSEC in Hamburg. </p>NEWS      29.09.2015

    Helmholtz-Zentrum Berlin successfully at international Photovoltaic Conference in Hamburg

    From 14. to 18. September more than 2.500 experts on photovoltaics from all over the world met at the 31th EU PVSEC in Hamburg to discuss the latest developments and innovations. HZB was present at the conference with oral and poster presentations and in addition with an booth at the exibition. A joint publication by the Competence Centre for Photovoltaics (PVcomB) and Institute for Silicon Photovoltaics was chosen from 1,300 contributions under the best TOP 20 of the conference. [...]

  • <p>HZB scientists develop new methods to investigate the electronic structure of catalytic molecules. </p>
<p></p>NEWS      28.09.2015

    Catalysis research strengthened: Helmholtz-Zentrum Berlin participates in newly approved Einstein Center for Catalysis

    The Einstein Foundation will fund the new Einstein Center for Catalysis (EC2) beginning in 2016 in which Technical University Berlin (TU Berlin) and selected non-university institutions in Berlin will be participating. Prof. Emad Aziz, head of the HZB Institute for Methods of Materials Research at Helmholtz-Zentrum Berlin will be taking part in setting up the institution. His team will be contributing particular expertise in analytics of ultrafast processes in catalytic reactions. [...]

  • <p>Good atmosphere after the final presentation. </p>
<p></p>NEWS      28.09.2015

    Summer students: Final presentation at a conference

    On Thursday, 24. September 2015, the summerstudents have presented their projects in Wannsee in a science conference format: Three topics have been selected for oral presentation, the other projects were presented in a poster session, thus all students could demonstrate first results.  [...]

  • <p>Liquid flatjet system, showing the two nozzles from which two impinging single jets form a  liquid water sheet with a thickness of 1 - 2 &mu;m. </p>NEWS      25.09.2015

    How to Flow Ultrathin Water Layers - A Liquid Flatjet for X-Ray Spectroscopy

    A collaboration between scientists from the Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (MBI), the Helmholtz-Zentrum Berlin (HZB) and the Max Planck Institute for Dynamics and Self-Organization (MPIDS) have now demonstrated the successful implementation of a liquid flatjet with a thickness in the μm range, allowing for XAS transmission measurements in the soft-x-ray regime. This paves the way for novel steady-state and time-resolved experiments. [...]

  • <p>Die HZB-Energieforschung konnten Sch&uuml;lerinnen und Sch&uuml;ler heute an der Sch&uuml;leruni der Freien Universit&auml;t kennenlernen. Das HZB Sch&uuml;lerlabor Wannsee hat dort zwei Workshops zu Energiethemen angeboten. Foto: HZB</p>NACHRICHT      24.09.2015

    Das HZB-Schülerlabor an der Schüleruni der Freien Universität Berlin

    Unter dem Motto „Lernen für eine zukunftsfähige Welt“ öffnet die Freie Universität Berlin ihren grünen Campus für eine Schüleruniversität. Eine Woche lang erforschen Schülerinnen und Schüler der 5. Und 6. Klassen, was sich hinter dem Begriff der nachhaltigen Entwicklung verbirgt. Das Schülerlabor des HZB bietet zum Thema „Nachhaltigkeit und Klimaschutz“ zwei Workshops an. [...]

  • <p>Die Online-Ausgabe der lichtblick finden Sie <a href="https://www.helmholtz-berlin.de/media/media/aktuell/print//lichtblick/139/hzb_lichtblick_september-2015_extern_web.pdf" class="Extern">hier</a>.</p>NACHRICHT      21.09.2015

    Neuer lichtblick: Neues Exzellenzlabor mit ZEISS, Tipps für das sichere Surfen im Netz, ein Comic über BESSY II ...

    Hätten Sie den Low Alpha Mode lieber mit – oder ohne Photonenpicker? Wollen Sie die Polarisation vertikal oder elliptisch? Und den Kaffee stark oder entkoffeiniert? Kein Problem! Im Café Happy Undulator ist man guten Service und anspruchsvolle Wünsche gewohnt. Mehr dazu gibt es im BESSYII-Comic in der neuen lichtblick. Natürlich darf darin auch nicht fehlen, dass die Küche schon an einem neuen Rezept für den Speicherring arbeitet. Und wer es lieber sachlich will, findet alle Informationen rund um das Zukunftsprojekt BESSY VSR im Interview mit Andreas Jankowiak. [...]

  • NEWS      21.09.2015

    The 6th International Conference on Small-Angle Scattering SAS in the Social Media

    Scientific networking at its best. 400 scientists from around the world met in Berlin from 13th to 18th September 2015. The SAS 2015 Conference is a triennial forum for the discussion of the most recent advances in the field of small angle scattering and assembles scientists from all around the world. We published a SAS2015-storify with the best impressions of the conference posted by the scientists. [...]

  • <p>Proteinkristalle an BESSY II studieren: Dank eines einmaligen Projektes k&ouml;nnen Studierende der FU Berlin regelm&auml;&szlig;ig am Snychrotron experimentieren. Das ist nur einer der sichtbaren Erfolge der Kooperation in der Berliner Strukturbiologie. Foto: Silvia Zerbe/HZB</p>NACHRICHT      21.09.2015

    Gemeinsames Treffen der Strukturbiologen in Berlin: der 6. Joint-MX-Day am 23. September 2015 am HZB

    Die Hauptstadt hat sich in den letzten Jahren zu einem Hotspot der Strukturbiologie in Deutschland entwickelt. Entscheidend dazu beigetragen hat das hohe Maß an Kooperation zwischen außeruniversitären Forschungseinrichtungen und Universitäten. Aber auch Wissenschaft und Industrie arbeiten in der Strukturbiologie sehr eng zusammen. Am 23. September 2015 findet der 6. Joint-MX-Day statt, bei dem sich Forscher über neue Methoden, Ansätze und Erkenntnisse in der Strukturbiologie austauschen werden. [...]

  • <p>Interessante Ergebnisse, gut pr&auml;sentiert: Jannik M&ouml;ser hat f&uuml;r sein Poster einen Preis erhalten. Foto: HZB</p>
<p></p>NACHRICHT      17.09.2015

    Posterpreis für HZB-Nachwuchsforscher Jannik Möser aus dem Institut für Nanospektroskopie

    Für sein Poster über den experimentellen Nachweis von Defekten in Dünnschicht-Silizium-Materialien für die Photovoltaik hat Jannik Möser einen Preis erhalten. Er erhielt diese Auszeichnung auf der Tagung der Fachgruppe magnetische Resonanz der Gesellschaft Deutscher Chemiker (GDCH), die Anfang September in Darmstadt stattfand. [...]

  • <p>price ceremony at the ECM29</p>NEWS      16.09.2015

    poster prize for Laura Elisa Valle Rios student at the European Crystallographic Meeting (ECM29)

    The poster contribution of Laura Elisa Valle Rios (HZB-Department Crystallography) was awarded the CrystEngComm poster price of the Royal Society of Chemistry at the 29th European Crystallographic Meeting (ECM29) in Rovinj (Croatia). Laura Elisa, a PhD student in the Marie-Curie Initial Training network KESTCELLS and the HZB Graduate School "Materials for Solar Energy Conversion" (MatSEC). [...]

  • <p>New efficiency record: This small device is able to convert 14 percent of the incoming solar energy into hydrogen. </p>SCIENCE HIGHLIGHT      15.09.2015

    Hydrogen from sunlight: new efficiency record for artificial photosynthesis

    An international team has now succeeded in considerably increasing the efficiency for direct solar water splitting. They are using a tandem solar cell whose surfaces have been selectively modified. The new record value is 14 % and thus considerably above the previous record of 12.4 % held by the National Renewable Energy Laboratory (NREL) in the USA, broken now for the first time in 17 years. Researchers from the Institute for Solar Fuels at the Helmholtz-Zentrum Berlin, TU Ilmenau, the Fraunhofer Institute for Solar Energy Systems ISE in Freiburg and the California Institute of Technology (Caltech) participated in the collaboration. The results have been published in Nature Communications. [...]

  • <p>Group picture in a beautiful landscape. </p>NEWS      14.09.2015

    ISUenergy 2015 – the 7th successful year!

    Local energy education & training for a global learning community – The International Summer University for Renewable Energy, the ISUenergy 2015, took place already for the seventh time from August to the beginning of September in Falera, Graubünden, with students from all around the world. [...]

  • <p>Spatenstich f&uuml;r die neue Beschleunigerhalle von bERLinPro. Zu sehen sind v.l.n.r: Jens Knobloch, Thomas Frederking, Anke Kaysser-Pyzalla, Andreas Jankowiak, Constanze Tibes (</p>NACHRICHT      11.09.2015

    Rohbauarbeiten für Beschleunigerhalle am HZB beginnen: Spatenstich für eine Testanlage eines Linearbeschleuniger mit Energierückgewinnung (ERL)

    Unmittelbar vor dem Beginn der Rohbauarbeiten wurde am 10. September 2015 der Spatenstich für die neue Beschleunigerhalle von bERLinPro gefeiert, in der eine kompakte Testanlage für einen Linearbeschleuniger mit Energierückgewinnung aufgebaut wird. Zirka 200 geladene Gäste verfolgten diesen Meilenschritt auf dem Weg zur Realisierung eines technologisch einzigartigen Projekts. [...]

  • <p></p>NACHRICHT      11.09.2015

    Milch, Wirkstoff-Taxis und andere kolloide Materialsysteme analysieren: SAS 2015 tagt in Berlin

    Vom 13. - 18. September treffen sich über 400 Expertinnen und Experten zur 16. Internationalen Konferenz zur Kleinwinkelstreuung (16. International Conference on Small Angle Scattering, SAS 2015) in Berlin. Mit Kleinwinkelstreuung lassen sich biologische und anorganische Materialsysteme auf Nanometerskala untersuchen und dynamische Prozesse beobachten. [...]

  • <p>A week long training gave the participants of the summer school a good overview about EPR methods. </p>NEWS      09.09.2015

    Berlin Joint EPR lab organises the 7th Summer School of the European Federation of EPR Groups with 120 participants from 26 countries

    100 students and 20 lecturers from all around the world came to Berlin for a week at the end of August to take part in the biggest and most traditional educational event in the field of electron paramagnetic resonance (EPR). The Summer School was organised, with the support of the HZB, by the groups of the Berlin Joint EPR labs (BeJEL) of HZB and Freie Universität Berlin. [...]

  • <p>11 Azubis und vier Studierende haben sich f&uuml;r einen Start ins Berufsleben am HZB entschieden. Heute ging es offiziell los. Foto: Jennifer Bierbaum</p>NACHRICHT      01.09.2015

    Herzlich Willkommen: Ausbildungsstart am 1. September am HZB

    11 Auszubildende und 4 Studierende starten heute ins Berufsleben. Am offiziellen Ausbildungsbeginn begrüßte der kaufmännische Geschäftsführer des HZB, Thomas Frederking, die Neuankömmlinge auf dem Campus Wannsee im Rahmen einer kleinen Kennlernveranstaltung. [...]

  • <p>The front of the new bERLinPro building designed by the architecture office DGI Bauwerk</p>NEWS      27.08.2015

    Ground-breaking ceremony for the bERLinPro building on 10th September 2015 at 12:30

    We cordially invite you to the bERLinPro (Berlin Energy Recovery Linac) groundbreaking ceremony on 10th September 2015 at 12:30. The HZB develops in Berlin-Adlershof a test facility for an Energy Recovery Linac. [...]

  • NEWS      20.08.2015

    HZB Scientist Frank Siewert wins Giovanni Sostero Award

    Congratulations to Frank Siewert, who just won the 2015 International Giovanni Sostero Award [...]

  • <p>Sara J&auml;ckle has demonstrated the formation of a pn-heterojunction at the interface between an organic contact and n-doped silicon. Photo</p>SCIENCE HIGHLIGHT      17.08.2015

    Charge transport in hybrid silicon solar cells

    An HZB team headed by Prof. Silke Christiansen has made a surprising discovery about hybrid organic/inorganic solar cells. Contrary to expectations, a diode composed of the conductive organic PEDOT:PSS and an n-type silicon absorber material behaves more like a pn junction between two semiconductors than like a metal-semiconductor contact (Schottky diode). Their results have now been published in the Nature journal Scientific Reports and could point the way toward improvements in hybrid solar cells. [...]

  • <p>The magnetic structure of LiFePO<sub>4</sub></p>NEWS      06.08.2015

    Anomalous magnetic structure and spin dynamics in magnetoelectric LiFePO4

    A team at HZB has recently unraveled intricate details of the magnetic structure and dynamics of the magnetoelectric compound LiFePO4.Such materials currently find use in sensors but there are promising perspectives for magnetoelectrics to be applied in data storage and spintronic devices as well. [...]

  • <p>Manuela G&ouml;belt is evaluating SEM-images to calculate the local degree of networking. Photo: Bj&ouml;rn Hoffmann.</p>SCIENCE HIGHLIGHT      31.07.2015

    Transparent, electrically conductive network of encapsulated silver nanowires – a novel electrode for optoelectronics

    A team headed by Prof. Silke Christiansen has developed a transparent electrode with high electrical conductivity for solar cells and other optoelectronic components – that uses minimal amounts of material. It consists of a random network of silver nanowires that is coated with aluminium-doped zinc oxide. The novel electrode requires about 70 times less silver than conventional silver grid electrodes, but possesses comparable electrical conductivity. [...]

  • NEWS      29.07.2015

    Helmholtz to invest 46 million EUR in new shared laboratory infrastructure

    Six Helmholtz Centres are founding a shared infrastructure for developing novel energy materials that will also be available to external users. [...]

  • <p>The new filling pattern consists of a Hybrid (or Camshaft) bunch at 4 mA (Chopper) in the center of the 200 ns wide ion clearing gap followed by the so-called PPRE-bunch of variable transverse excitation at 3 mA and 84 ns later. Together with the usual multibunch filling and the 3 slicing bunches on top of the multibunch train, now 302 out of 400 possible buckets in the storage ring are filled and topped up. </p>NEWS      28.07.2015

    BESSY II launches New Filling Pattern in User Mode

    Since July 2015 BESSY II has been providing a new bunch filling pattern in Top-Up mode. It will open new opportunities especially for research teams dealing with time-resolved x-ray experiments. It is of significant importance for us and the community anticipating BESSY VSR. [...]

  • <p>The hedgehog-configuration of the spins and the Fermi-Level is shown. Illustration Thomas Splettst&ouml;&szlig;er/HZB</p>SCIENCE HIGHLIGHT      27.07.2015

    Spins in Graphene with a Hedgehog Texture

    HZB researchers demonstrate a fundamental property of the electron spin in graphene [...]

  • <p>Dr. Tristan Petit will broaden his research on nanocarbon materials with the Freigeist Fellowship. </p>NEWS      23.07.2015

    Freigeist Fellowship for Tristan Petit

    For his project on nanodiamond materials and nanocarbon, Dr. Tristan Petit has been awarded a Freigeist Fellowship from the VolkswagenStiftung. The grant covers a five-year period and will enable him to establish his own research team. The VolkswagenStiftung is funding with these prestigious fellowships outstanding postdocs planning original research that transcends the bounds of their own field.

  • <p>Prof. Peter-Andr&eacute; Alt (right), President of Freie Universit&auml;t Berlin, conferring the appointment on Prof. Emad Aziz. </p>NEWS      13.07.2015

    Emad Aziz promoted to full professor

    Prof. Emad Aziz has been promoted to full Professor (German W3) at the Freie Universität Berlin effective July 1, 2015. He held previously a junior professorship in the Department of Physics. Aziz heads the HZB Institute for Methods of Material Development and the JULiq Joint Lab operated concomitantly by the HZB and Freie Universität Berlin. [...]

  • <p>X-ray spectroscopies have shown a higher chlorine concentration near the perovskite/TiO<sub>2</sub> interface than throughout the rest of the perovskite film. </p>SCIENCE HIGHLIGHT      10.07.2015

    Depletion and enrichment of chlorine in perovskites observed

    X-ray spectroscopy at BESSY II reveals inhomogenous distribution of chlorine in a special class of perovskite materials. The discovery could help to enhance efficiencies of perovskite thin film solar cells by controlled processing to optimize the chlorine distribution. [...]

  • <p>Prof. Dr. Gerd Schneider becomes a full professur for x-ray microscopy at the Humboldt University Berlin and is the head of the HZB group "Microscopy". </p>NEWS      08.07.2015

    Gerd Schneider receives a professorship for "X-ray microscopy" at Humboldt-Universität zu Berlin

    On 29 April 2015, Gerd Schneider (HZB) accepted the call to a W2-S “X-ray microscopy” professorship at the Department of Physics of Humboldt-Universität zu Berlin. The professorship is associated with heading the workgroup “X-ray microscopy” at the Helmholtz-Zentrum Berlin für Materialien und Energie. With his group, the internationally recognised expert is developing new methods and applications for X-ray microscopy, which delivers crucial information for many scientific disciplines – from material and energy research to the life sciences.  [...]

  • <p>HZB Group at the ICT/ECT2015. From left to right: Dr. Klaus Habicht (Head of the Department for Methods for Characterization of Transport Phenomena in Energy Materials), Dr. Tommy Hofmann, Dr. Katharina Fritsch, Dr. Britta Willenberg, Dr. Katrin Meier-Kirchner</p>NEWS      07.07.2015

    HZB presents research on thermoelectrics

    The annual "International Conference on Thermoelectrics (ICT)” and the "European Conference on Thermoelectrics (ECT)” took place together from 29 June to 02 July 2015 in Dresden, Germany. For the first time, HZB participated in this international multidisciplinary meeting. The HZB Department "Methods for Characterization of Transport Phenomena in Energy Materials" headed by Dr. Klaus Habicht presented their research in two talks and one poster. [...]

  • <p>Mapping of the captured magnetisation domains (right, red-blue patterns) in a sample 20 nanometres thick that had been wound in two layers into a tube. The tube has a diameter of 5 microns and a height of 50 microns. </p>NEWS      07.07.2015

    New technique enables magnetic patterns to be mapped in 3D

    An international collaboration has succeeded in using synchrotron light to detect and record the complex 3D magnetisation in wound magnetic layers. This technique could be important in the development of devices that are highly sensitive to magnetic fields, such as in medical diagnostics for example. Their results are published now in Nature Communications. [...]

  • <p>These samples with precise proportions of nickel and copper were produced via an improved preparation procedure. Photo: M. Tovar/HZB</p>NEWS      06.07.2015

    Crystal structure and magnetism – new insight into the fundamentals of solid state physics

    HZB team decodes relationship between magnetic interactions and the distortions in crystal structure within a geometrically “frustrated” spinel system [...]

  • <p>Alexander F&ouml;hlisch is head of the HZB Institute Methods and Instrumentation for Synchrotron Radiation Research and holds a professorship at University Potsdam. </p>NEWS      03.07.2015

    From Excited Atoms to Functionality – ERC Advanced Grant Awarded to Alexander Föhlisch

    Under the EU Horizon 2020 Programme for Research and Innovation, Alexander Föhlisch has been awarded an ERC Advanced Grant. The physicists is holding a joint appointment at the Institute for Physics and Astronomy of the University of Potsdam and at the Helmholtz-Zentrum Berlin für Materialien und Energie. He is to receive a total of 2.5 million Euros over a five-year period to support his work on highly selective methods of detection using synchrotron light and X-ray lasers. [...]

  • <p>The HZB has officially been a family-friendly employer since 2011. It created many structures that contribute towards better long-term reconciliation of career and family.</p>NEWS      03.07.2015

    HZB has its career and family certificate renewed: New agreed targets for the next three years

    On 29 June 2015, Iris Gleicke, Parliamentary State Secretary of the Federal Ministry of Economics and Energy, awarded the HZB the “berufundfamilie” certificate (career and family). So certified, the research centre has officially been a family-friendly employer since 2011. The certificate is highly respected among chambers of commerce, associations and in politics, since it attests to the fact that the certified company has truly organised its working conditions to be more family friendly.  In the first three years, the HZB created many structures that contribute towards better long-term reconciliation of career and family. [...]

  • <p>Sunlight activates the catalytic behavior of diamond materials, thus helping to convert carbon dioxide into fine chemicals and fuels. </p>NEWS      02.07.2015

    Green solutions with diamond materials:

    Horizon 2020 invests 3.9 million Euro in research project to convert CO2 into fuels using sunlight and diamond materials [...]

  • <p>Promovierende der Graduiertenschule MatSEC</p>NACHRICHT      01.07.2015

    Forschungskolloquium der Graduiertenschule MatSEC

    Am 24. Juni trafen sich die Mitglieder der Graduiertenschule MatSEC zum halbjährlichen Forschungskolloquium auf dem Lise-Meitner-Campus. MatSEC wurde im Frühjahr 2013 unter dem Dach der Dahlem Research School der Freien Universität Berlin gegründet. Die Graduiertenschule bietet ein strukturiertes dreijähriges Promotionsprogramm und beschäftigt sich mit Kesterit-Verbindungshalbleiter. [...]

  • <p>Hexagonal single crystal of SrCo<sub>6</sub>O<sub>11</sub>, with a sample diameter of approximately 0,2 millimetres.</p>SCIENCE HIGHLIGHT      01.07.2015

    Emergence of a “devil’s staircase” in a spin-valve system

    A Japanese-German team observes at BESSY II how spins form unusual magnetic structures in a complex cobalt oxide single crystal. Such a material offers new perspectives for spintronic applications. [...]

  • <p>The illustration shows how maleimide compounds bind to the graphene surface. The graphene monolayer lies on a thin film of silicon nitride (red) that in turn is on a quartz microbalance (blue) and can be subjected to a potential via a gold contact (yellow).<br /><br />Illustration: Marc Gluba/HZB</p>SCIENCE HIGHLIGHT      24.06.2015

    Towards graphene biosensors

    For the first time, a team of scientists has succeeded in precisely measuring and controlling the thickness of an organic compound that has been bound to a graphene layer. This might enable graphene to be used as a sensitive detector for biological molecules in the future. [...]

  • <p><strong>Watching the sky:</strong> The kindergarten Kids built spectroscopes and used them to study the different kinds of light.</p>NEWS      24.06.2015

    40 kindergarten kids jointed the School Lab on Little Scientists’ Day

    Young guests visiting the School Lab of the Helmholtz-Zentrum Berlin is nothing unusual. But on the 23rd of June 2015, even the tiniest were allowed to get into the role of researcher and conduct their own experiments. The School Lab took part in the Germany-wide campaign “Tag der Kleinen Forscher” (Little Scientists’ Day), and invited 40 children of ages five to seven to the Adlershof campus. Here, they built spectroscopes and used them to study the different kinds of light. After a good hour of intensive experimenting, each child proudly held his or her “researcher’s diploma” in hand. [...]

  • <p>From the 5th to the 8th of June, 1,200 sports enthusiasts from 36 European research centres came to Mol, Belgium, for the Atomiade. The HZB team&rsquo;s trip was an outstanding success.</p>NEWS      16.06.2015

    37 medals for HZB athletes at the Atomiade

    3rd place overall in the Games [...]

  • NEWS      16.06.2015

    50 PhD students from the HZB attended the PhD Retreat in Liebenwalde

    From the 3rd to the 5th of June, 2015, this year’s PhD Retreat took place in Liebenwalde, with more than fifty PhD students from the HZB taking part. Among other topics, the programme included seminars on scientific writing, time management and learning intercultural competence. The practical workshop received great interest. The participants also found many opportunities in the venue’s idyllic setting to network with those from other departments and locations. [...]

  • NEWS      15.06.2015

    BESSY II - What can I do for you?

    To this very special question the current movie published by HZB gives an answer. We didn't produce a classic image film and show the xth series of images from a storage ring, but chose a different approach. The result is a funny puppet animation, in which our message is very clear but subtle: The Berlin Electron Storage Ring for Synchrotron Radiation [...]

  • <p>Exciting tricks with liquid nitrogen; Photo: Ingo Kniest</p>NEWS      15.06.2015

    1,300 visitors at the Long Night of Sciences in Wannsee

    Despite muggy-warm temperatures and storms on Saturday, thousands of eager people once again rolled in to catch up on the science in the region. 1,300 visitors to the Helmholtz-Zentrum Berlin took part in guided tours through laboratories and the colourful hands-on programme. We have captured the best moments with Storify. [...]

  • <p>Die Berliner Bildhauerin Anna Franziska Schwarzbach hat das erste Denkmal in Deutschland f&uuml;r eine Wissenschaftlerin errichtet.</p>NACHRICHT      11.06.2015

    Öffentliche Einweihung des Lise-Meitner-Denkmal am 13. Juni zur Langen Nacht der Wissenschaften

    Seit ein paar Tagen verfügt der Innenhof des Hörsaalgebäudes am Campus Wannsee über eine wahre Attraktion - das neu errichtete Lise-Meitner-Denkmal. Es wird bei der Langen Nacht der Wissenschaften am 13. Juni 2015 um 17.30 Uhr feierlich eröffnet. Die Bildhauerin Anna Franziska Schwarzbach, die das Denkmal realisiert hat, steht für Gespräche zur Verfügung. [...]

  • <p><strong>Frostige Wissenschaften:</strong> Experimente mit fl&uuml;ssigem Stickstoff</p>NACHRICHT      11.06.2015

    Eine lange Nacht geballtes Wissen tanken

    Führungen an der Neutronenquelle, Experimente zur Energie für Groß und Klein, Licht-Show und vieles mehr [...]

  • <p>Illustration of the complex biostructure of dentin: the dental tubuli (yellow hollow cylinders, diameters appr. 1 micrometer) are surrounded by layers of mineralized collagen fibers (brown rods). The tiny mineral nanoparticles are embedded in the mesh of collagen fibers and not visible here. </p>SCIENCE HIGHLIGHT      10.06.2015

    Strong teeth: Nanostructures under stress make teeth crack resistant

    Human teeth have to serve for a lifetime, despite being subjected to huge forces. But the high failure resistance of dentin in teeth is not fully understood. An interdisciplinary team led by scientists of Charité – Universitätsmedizin Berlin has now analyzed the complex structure of dentin. At the synchrotron sources BESSY II at HZB, Berlin, Germany, and the European Synchrotron Radiation Facility ESRF, Grenoble, France, they could reveal that the mineral particles are precompressed. The internal stress works against crack propagation and increases resistance of the biostructure. [...]

  • NACHRICHT      03.06.2015

    HZB-Zeitung "lichtblick" Juni 2015 erschienen

    Drei Monate liegen hinter uns, in denen viel passiert ist. Von uns lange erwartet wurde die Inbetriebnahme des Hochfeldmagneten für die Neutronenforschung im Mai 2015. Aber auch bei den anderen HZB-Zukunftsprojekten ging es rasant voran: die Bauarbeiten für eine neue Beschleunigerhalle für bERLinPro wurden begonnen, am Analyselabor EMIL werden die Messtationen gerade installiert und das Team der Proteinkristallographie eröffnet demnächst einen hochautomatisierten Messplatz für unsere Gastforscher. Das sind nur einige Themen, über die wir in der neu erschienenen Zeitung berichten. [...]

  • <p>To obtain the 3D structure of the battery electrode on a micormeter scale, snchrotron tomography at BESSY II was used. </p>SCIENCE HIGHLIGHT      02.06.2015

    Realistic computer model of battery electrodes

    A research team has developed a new approach for more realistic computer models of battery electrodes. They combined images from synchrotron tomography that capture three-dimensional structure at micron resolution with those from an electron microscope that can even resolve nanometre-scale features over a small section. They were able to transfer these nano-features to areas beyond the section using a mathematical model. Properties and processes within battery electrodes can now be simulated highly realistically using this method. [...]

  • <p>At the MRS Spring Meeting in San Francisco, Kai Neldner was awarded for his poster contribution.</p>NEWS      29.05.2015

    Poster award for MatSEC PhD student at the MRS Spring Meeting

    The poster contribution of Kai Neldner (HZB-Department Crystallography) was awarded a poster price of the Symposium "Thin-Film Compound Semiconductors" at the MRS Spring Meeting in San Francisco. Kai Neldner, a PhD student in the HZB Graduate School "Materials for Solar Energy Conversion" (MatSEC) has presented results on structural properties of Kesterites (Cu2ZnSnS4 - CZTS) in relation to its stoichiometry deviations. [...]

  • <p>Ah Reum Jeong has completed her PhD in physics at Ewha Womans University in Seoul, Korea. She now works as a postdoc in the Hybrid Material Systems &amp; Nano-Analytics team of Dr. Marin Rusu.</p>NEWS      27.05.2015

    Poster Award for HZB-Postdoc at EMRS Spring Meeting

    During the spring meeting 2015 of the European Materials Research Society the Poster contribution of  Dr. Ah Reum Jeong (HZB-Institute for Heterogeneous Material Systems) was selected for an award.  The young scientist has presented results on electronic and structural properties in relation to chemical composition of molybdenum oxide layers, which are widely applied in photovoltaic as well as optoelectronic devices. [...]

  • NEWS      27.05.2015

    Joint Lab BeJEL receives 1.4 million EUR grant

    The Berlin Joint EPR Laboratory (BeJEL) operated by HZB and Freie Universität Berlin has pulled in six of 27 subprojects within a DFG priority program to address“New Frontiers in Sensitivity for EPR Spectroscopy – from Biological Cells to Nano Materials”. [...]

  • <p>ANSTO is delivering scientific services and products to government, industry, academia and other research organisations.&nbsp;</p>NEWS      22.05.2015

    HZB and ANSTO signed MoU

    In May HZB and the  Australian Nuclear Science and Technology Organisation (ANSTO) have signed a high-level scientific cooperation agreement. The objective is to establish a framework and terms of cooperation in the field of neutron scattering science, and define the mechanisms for collaboration on the basis of mutual benefit, equality and reciprocity. [...]

  • <p>A thin magnetic FeRh film is grown onto a ferroelastic BTO substrate with two different crystal domains a and c. At 0 Volt ferromagnetic domains (red-blue pattern) are observed above BTO a-domains, whereas above c-domains the net magnetization is zero. At 50 Volt all BTO domains are converted into c-domains, which switches off ferromagnetic domains in FeRh. </p>SCIENCE HIGHLIGHT      18.05.2015

    New options for spintronic devices: Switching between 1 and 0 with low voltage

    Scientists from Paris and Helmholtz-Zentrum Berlin have been able to switch ferromagnetic domains on and off with low voltage in a structure made of two different ferroic materials. The switching works slightly above room temperature. Their results, which are published online in  Scientific Reports, might inspire future applications in low-power spintronics, for instance for fast and efficient data storage. [...]

  • <p>A <a href="https://www.youtube.com/watch?v=gzrDtZkCwqc" class="Extern">short filmclip</a> demonstrates the production of the photocathode with ILGAR method.</p>SCIENCE HIGHLIGHT      13.05.2015

    Artificial photosynthesis: New, stable photocathode with great potential

    A team at the HZB Institute for Solar Fuels has developed a new composite photocathode for generating hydrogen with high quantum efficiency using sunlight. This enables solar energy to be stored chemically.The photocathode consists of a thin film of chalcopyrite produced by HZB/PVcomB coated with a newly developed thin film of photoresistant titanium dioxide containing platinum nanoparticles. This layer does not only protect the chalcopyrite thin film from corrosion, it additionally acts as a catalyst to speed-up the formation of hydrogen as well as being a novel photodiode itself that even shows photoelectric current density and voltage comparable to those of a chalcopyrite-based thin film solar cell. [...]

  • <p>At the HZB Institute for Solar Fuels, also nanostructures in metal oxides are explored as efficient catalyst materials for artificial photosynthesis. </p>NEWS      12.05.2015

    Success rate 100 percent: HZB teams get third party funding for Solar Fuel projects

    Converting solar energy and storing it in form of solar fuels, is one of the great scientific and technological challenges today to enable the transition into a more sustainable future powered by renewable energies. Scientists at the HZB institute for Solar Fuels are exploring new semiconductor materials in order to develop compact, robust and economic solutions for “artificial photosynthesis”. They have submitted four research projects in collaboration with partners from universities for funding by the German Research Association (Deutsche Forschungsgemeinschaft DFG) in the Priority Programme „Fuels Produced Regeneratively Through Light-Driven Water Splitting” (SPP 1613). All four projects have now been approved for funding. [...]

  • <p>&bdquo;Neuro-anatomy 01&ldquo; von artwork by Aceofhearts1968<strong> <br /></strong></p>NACHRICHT      08.05.2015

    Dienstag 14:00, Vortrag bei BESSY II: Gliazellen - Der Kitt denkt mit

    Dienstag, 14:00 im Hörsaal BESSY II:  Hirnforschung, vom Experten verständlich erklärt [...]

  • <p>Ready for use: after 8 years of developement and construction the High Field Magnet at HZB attracts the first users.</p>NEWS      07.05.2015

    Commissioning party of the High Field Magnet at Helmholtz-Zentrum Berlin

    After about eight years of building and development, we are finally there: At the Helmholtz-Zentrum Berlin, the world’s strongest magnet for neutron experiments is now available to scientists from across the world. The High Field Magnet will be officially put into the service of science at a commissioning party on 7 May 2015. Many research and political representatives and many cooperation and development partners are expected to attend the celebratory commissioning in Berlin-Wannsee. [...]

  • <p>Illustration of the working principle of inkjet printing. </p>SCIENCE HIGHLIGHT      06.05.2015

    Inkjet printing process for Kesterite solar cells

    A research team at HZB has developed an inkjet printing technology to produce kesterite thin film absorbers (CZTSSe). Based on the inkjet-printed absorbers, solar cells with total area conversion efficiency of up to 6.4 % have been achieved. Although this is lower than the efficiency records for this material class, the inkjet printing minimizes waste and has huge advantages for industrial production. [...]

  • <p>PVcomB conducts research and technological improvement on CIGS solar cells, in close cooperation with industrial partners. </p>NEWS      04.05.2015

    New opportunities for CIGS solar cells

    Dynamic CIGS solar cell technology workshop gives rise to optimism: experts predict higher efficiencies and lean production technologies [...]

  • <p>Sketch of  the &ldquo;MHz-pulse selector&rdquo; which moves frictionless in a vacuum at triple sound velocity perpendicular to the beam. </p>NEWS      04.05.2015

    Wheel with triple sound velocity for pulse selection at BESSY II

    In order to pick out only one pulse per turn out of the 400 possible x-ray flashes at BESSY II, a joint team of physicists and engineers from Forschungszentrum Jülich, MPI of Microstructure Physics and HZB have developed an extremely fast rotating “MHz-pulse selector”, which is now at the core of the Uppsala Berlin joint Lab to extract the hybrid bunch within the 200 nanosecond ion clearing gap of BESSY II. The device consists of a wheel made of a special Aluminum alloy which has tiny slits of 70 micrometer width at its outer rim. They move frictionless in a vacuum at triple sound velocity perpendicular to the beam. Users can now decide to operate their experiment in a single bunch mode even during normal multibunch operation of BESSY II. [...]

  • <p>Ultra-high vacuum system in the Energy Materials In-Situ Lab (EMIL) that will combine industry-relevant deposition tools with a suite of complementary advanced characterization methods. </p>NEWS      29.04.2015

    EU funding strengthens solar cell research at HZB

    Marcus Bär and his team are participating in two international projects being funded under the EU Horizon 2020 research programme. Both research projects are concerned with development and optimisation of high-efficiency thin-film solar cells based on chalcopyrites (“Sharc 25") and kesterites (“SWInG”). These two projects will together bring in about 900,000 EUR of additional research funding for solar cell research. [...]

  • <p><strong>Exchange, good supervision and fair working conditions</strong>: The HZB has long had PhD guidelines in place to offer PhD students excellent opportunities for development.</p>NEWS      28.04.2015

    New Guidelines for the completion of PhD projects within the Helmholtz Association

    The Helmholtz Centres and the President have agreed on common PhD guidelines. These guidelines define minimum standards for the creation of optimal conditions for PhD students to operate in and contribute towards a common understanding of quality. The Helmholtz Association hereby acknowledges the indispensability of young researchers for the research efforts of the Association. [...]

  • <p>Die M&auml;dchen untersuchen die selber gez&uuml;chteten Kristalle am Mikroskop.</p>NACHRICHT      23.04.2015

    Raus aus der Schule, rein ins Labor: 90 Schülerinnen beim Girls'Day am Helmholtz-Zentrum Berlin

    90 Mädchen kamen dieses Jahr zum Girls’ Day in das HZB nach Wannsee und Adlershof. In Laboren und Werkstätten erlebten die Teilnehmerinnen, wie spannend die Arbeit in einem Forschungszentrum ist, und lernten Frauen kennen, die in naturwissenschaftlichen-technischen Berufen arbeiten. Angeboten wurden 16 verschiedene Workshops, von denen die Mädchen zwei auswählten. Sie konnten unter anderem Kristalle züchten, Strom aus Zitronen erzeugen oder ein Schmuckstück vergolden. [...]

  • <p>A view of what had been the practically empty segment at EMIL in the experimental hall; the beam tubes for EMIL are already being marked out on the brand-new flooring. Photo: Ingo M&uuml;ller/HZB<strong><br /></strong></p>NEWS      21.04.2015

    BESSY II is ready for user service

    BESSY II was shut down as scheduled from February 9th until the end of March for refurbishment and modernization. The accelerator is operational once again, and has been running since the beginning of April, beginning with beam scrubbing to increase the lifetime of the electrons in the storage ring and to improve operation. At the same time teams have been working on the calibration and commissioning of their instruments. BESSY II will be ready for user service once again on April 21 2015.

  • <p>One of the new solid state transmitters: the power supplies are located in the left rack (black), the RF section is located behind the grey doors in the middle and in the right rack the control units can be seen.</p>NEWS      20.04.2015

    BESSY II changes over to solid state RF amplifiers

    BESSY II storage ring has four cavity resonators that are excited with high-power oscillating electromagnetic fields to compensate for the energy lost by the electron beam. Four Klystrons, as they are called (large high-power linear RF vacuum tubes), have provided extremely pure 500-MHz RF power for exciting these cavity resonators up to now. But there are no replacement klystrons available on the market. Wolfgang Anders and his team at the HZB’s Institute SRF – Science and Technology have therefore used the shutdown to replace two of the klystrons with modern solid-state RF amplifiers. The other klystrons are to be replaced until the end of the year. [...]

  • <p>Symmetrien; Bildrecht: K.Berthold</p>NACHRICHT      16.04.2015

    Eröffnung der Ausstellung "Das Bild entsteht im Kopf" am 20. April um 17 Uhr bei BESSY

    Ab dem 20. April 2015 zeigt K. Berthold ihre Arbeiten im BESSY II-Gebäude. Sie ist Meisterschülerin der Universität der Künste Berlin und seit über 20 Jahren als Bildhauerin und Bildgestalterin tätig. In der Ausstellung zeigt die Künstlern über 40 Bilder, die als Collagen aus Zeichnungen, Fotografien und Makroaufnahmen entstanden sind. [...]

  • <p>Logo der Teilausstellung "Research &amp; Technology"</p>NACHRICHT      13.04.2015

    HZB auf der Hannover Messe

    Die Hannover Messe, die weltweit größte Industriemesse, wurde heute eröffnet. Das HZB ist als Aussteller auf dem Themenstand »Energy Research« in der Halle 2 Stand A.32 vertreten. Das HZB präsentiert Themen aus dem Bereich der Energieforschung mit den drei Schwerpunkten: Solare Brennstoffe, die Erforschung von neuen Energiematerialien mithilfe von Großgeräten und das PVcomB. [...]

  • <p>An ultrashort laser pulse activates iron pentacarbonyl as a catalyst. Scientists could observe the subsequent ultrafast processes experimentally by mapping the outer orbitals with an x-ray free electron laser and interpret the obtained energy maps using quantum chemical calculations.<br />Illustration: SciStyle Thomas Splettst&ouml;&szlig;er</p>NEWS      02.04.2015

    Femto-snapshots of reaction kinetics

    Bonding behaviour of iron pentacarbonyl experimentally decoded. Application as a catalyst for storing solar energy. [...]

  • NEWS      01.04.2015

    Antique Osiris figurines from the Egyptian Museum of Florence examined with neutrons

    An research team from the “Nello Carrara” Institute of Applied Physics, Italy, examined three antique bronze figurines non-invasively with neutrons at the Helmholtz-Zentrum Berlin für Materialien und Energie. The statuettes from the Egyptian Museum of Florence embody Osiris, the Egyptian god of the afterlife, the underworld and the dead. Until now, little had been known about what alloy they consist of or how they were produced. Using several analytical methods, the researchers have now shown that the production method and the materials used were astonishingly similar for all three figurines, even though they were crafted in different regions of ancient Egypt.

  • NEWS      31.03.2015

    HZB still a certified family-friendly employer

    The Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) offers a family-friendly environment for its employees. The charitable Hertie Foundation has confirmed this once again, and has awarded the research centre the “career and family” certificate for another three years. The HZB management decided to undergo this external audit in 2011 and has agreed on new targets to increase the family friendliness even further. This certificate awarded by the experts confirms that HZB now ensures better long-term reconciliation of family and career. [...]

  • <p>Leading scientists presented the research programme for the two new graduate schools, HZB is organising together with HUB and UP.</p> <p></p>NEWS      30.03.2015

    New Opportunities for students in energy research:

    HZB starts two Graduate Schools with Humboldt-Universität zu Berlin and Universität Potsdam

    Friday, 27 March 2015, the start of two new graduate schools on solar energy research was celebrated at Helmholtz-Zentrum Berlin (HZB). Hybrid4Energy, the Graduate School of Hybrid Materials for Efficient Energy Generation and Information Technologies, is a joint venture of Humboldt-Universität zu Berlin (HUB) and HZB. The Graduate School HyPerCell focuses on a new type of thin film solar cells based on hybrid perovskite absorber materials and is organised by Universität Potsdam (UP) and HZB. [...]

  • <p>Solar Solutions, hand made by the students. And they all work. </p>NEWS      30.03.2015

    Call for Applications open: International Summer University on Energy, Falera/Switzerland

    Excellent Master, Diploma, and PhD Students from all over the world from different disciplines are invited to participate in the international summer university ISUenergy2015. The ISUenergy2015 will take place from Aug. 23rd - Sept. 4th 2015 in Falera/Switzerland. [...]

  • <p>Learning in green surroundings: In 2014 the summer students came from all over the world to meet solar energy experts.</p>NEWS      25.03.2015

    Registration now open! Summer School Quantsol

    The International Summer School Quantsol will inform on basics in photovoltaics and solar energy conversion [...]

  • <p>Susan Schorr is Head of the Department of Crystallography.</p>NEWS      23.03.2015

    Susan Schorr named DGK Chair

    Prof. Dr. Susan Schorr was elected Chair at the German Crystallographic Society’s (DGK) recent annual conference. The conference took place from March 16-19, 2015, in Göttingen, Germany. Prior to her current appointment, Susan Schorr was head of the DGK’s National Committee. [...]

  • NACHRICHT      19.03.2015

    TV-Tipp: Das HZB-Schülerlabor beim Jugendmagazin Yolo - Samstag, 21.3. um 9.15 Uhr auf RTL

    Wer an diesem Samstag schon früh auf den Beinen ist, dem sei das Jugendmagazin Yolo empfohlen. Der TV-Sender RTL strahlt von 9.15 bis 9.45 eine Serie aus, in der es um starke Kräfte und um Superhelden geht. Gedreht wurde unter anderem im HZB-Schülerlabor. Dort weiß man einiges zu den Superkräften von Magnenten zu sagen. Die Folge kann später auch in der Mediathek des Senders angeschaut werden. [...]

  • <p>Auf frischer Tat ertappt: Stefanie Kodalle und Jennifer Bierbaum knacken die 26 Tesla beim Hochfeldmagneten und fahren den Sieg beim Selfie-Wettbewerb ein.</p>NACHRICHT      16.03.2015

    Sieger beim ScienceSelfie Wettbwerb: Die HZB-Panzerknacker Stefanie Kodalle und Jennifer Bierbaum knacken die 26 Tesla

    Mit finsterer Miene machen sich die HZB-Kolleginnen Jennifer Bierbaum und Stefanie Kodalle ans Werk: Die beiden Panzenknackerinnen wollen die 26 Tesla beim Hochfeldmagneten des HZB knacken. Glücklicherweise schießen sie im richtigen Augenblick ein Selfie mit dem Smartphone von dem wohl größten Moment in ihrer Verbrecherlaufbahn. [...]

  • <p>3D-Modelle der Beschleunigerhalle f&uuml;r bERLinPro</p>NACHRICHT      13.03.2015

    Baubeginn für Beschleunigerhalle bERLinPro am Helmholtz-Zentrum Berlin

    Am HZB- Standort Adlershof entsteht ein neuer Linearbeschleuniger mit Energierückgewinnung [...]

  • <p></p>
<p class="MsoNormal"><span></span><span>The neutron images (left row) detect the distribution of liquids in this filled tooth, whereas the X-ray-CT shows the microstructure and pores in the material. A comparision of both images allows to see which pores are filled with liquids. </span></p>SCIENCE HIGHLIGHT      13.03.2015

    Neutrons and X-rays show how to prepare durable tooth cement

    There are many ways to mix cements for tooth fillings, but it can be difficult to tell which way works best. Now, a team of scientists from Copenhagen, Denmark, has come up with an answer: They used neutron imaging and x-ray-microtomography at HZB to analyze fillings with glass ionomere cements, prepared by different methods. Their results, now published in  Scientific Reports, demonstrate how much the order of mixing steps matters to obtain a nearly homogenous filling without large liquid-filled pores which reduce stability. [...]

  • <p>Experimentieren mit Spa&szlig;: Die Sch&uuml;lerlabor-AG trifft sich immer donnerstags in Wannsee. Foto: HZB</p>NACHRICHT      06.03.2015

    Eine neue Schülerlabor-AG am Helmholtz-Zentrum Berlin experimentiert zu Energiefragen im Alltag

    Wie viel Strom verbraucht ein Smartphone? Wo kommt unser Strom her? Und ist er eigentlich teuer? Das Schülerlabor des Helmholtz-Zentrum Berlin bietet am Standort Wannsee für Kinder der 5. bis 7. Klassen eine neue Arbeitsgruppe an. Immer donnerstags treffen sich zehn Mädchen und Jungen, um zu experimentieren und diesen Fragen auf den Grund zu gehen.   [...]

  • <p></p>NEWS      05.03.2015

    Workshop on “Microstructure Characterization and Modeling for Solar Cells”

    The winter workshop was held in a beautiful location at Spitzingsee (Bayern) from 22. to 26. february 2015 and organised by Helmholtz Virtual Institute "Microstructure Control for Thin-Film Solar Cells". The next winter workshop will be planned for 2017. [...]

  • <p>Kesterite f&uuml;r Solarzellen und solare Brennstoffe: Die Graduiertenschule <a href="https://www.helmholtz-berlin.de/angebote/jobskarriere/promotion/index_de.html">MatSEC </a>vereint f&auml;cher&uuml;bergreifende Experitise. Foto: HZB/Kodalle</p>NACHRICHT      04.03.2015

    Graduiertenschule MatSEC diskutiert über Kesterite für Solarzellen

    Am 2. Februar 2015 trafen sich die Mitglieder der Graduiertenschule MatSEC auf dem Lise-Meitner-Campus des HZB zum wissenschaftlichen Austausch. In der Graduiertenschule MatSEC forschen die Promovierenden an neuartigen Materialsystemen für die solare Energieumwandlung, den Kesteriten. Das Forschungskolloquium findet halbjährlich statt und ist fester Bestandteil des Curriculums der Graduiertenschule. [...]

  • <p>Instagram ist ideal, um tolle Bilder aus der Forschung zu kommunizieren, hier zum Beispiel einen Lichtofen f&uuml;r die Kristallzucht. Foto: N. Islam/HZB</p>NACHRICHT      02.03.2015

    Das HZB auf Instagram

    Immer mehr Menschen nutzen ihr Smartphone, um zum Beispiel in einer Pause ein paar Bilder mit kurzen Infos anzusehen. Nun können sie beim Stöbern in dem beliebten Bildernetzwerk Instagram auch auf Themen aus dem HZB stoßen. Seit Neuestem postet dort die Kommunikationsabteilung besonders schöne, spektakuläre Bilder, die knapp erläutert und mit Links zu mehr Informationen versehen sind. [...]

  • <p>Anke Kaysser-Pyzalla, Thomas Frederking, Gerhard Sagerer und Stephan Becker (v. l.) unterzeichnen den Kooperationsvertrag.Foto: Universit&auml;t Bielefeld</p>NACHRICHT      26.02.2015

    Universität Bielefeld und HZB kooperieren zu Nanoschichten und komplexen Materialien

    Im Februar 2015 haben Uni-Rektor Professor Dr.-Ing. Gerhard Sagerer, Uni-Kanzler Dr. Stephan Becker und die Geschäftsführer des HZB, Professorin Dr.-Ing. Anke Kaysser-Pyzalla und Thomas Frederking eine Vereinbarung über die Zusammenarbeit unterschrieben. Darin heißt es: „Die Kooperation soll zur Steigerung der wissenschaftlichen Exzellenz der Partner und zur Entwicklung regionaler Kompetenznetzwerke in Forschung, Lehre und Ausbildung des wissenschaftlichen Nachwuchses beitragen.“ [...]

  • <p></p>
<p>The scanning electron microscopies (SEM) show how regularly the funnels etched in a silicon substrate are arranged (left: the line segment = 5 microns; right: 1 micron). The funnels measure about 800 nanometres in diameter above and run down to about a hundred nanometres at the tip. </p>SCIENCE HIGHLIGHT      24.02.2015

    Learning by eye: silicon micro-funnels increase the efficiency of solar cells

    A biological structure in mammalian eyes has inspired a team headed by Silke Christiansen to design an inorganic counterpart for use in solar cells. With the help of conventional semiconductor processes, they etched micron-sized vertical funnels shoulder-to-shoulder in a silicon substrate. Using mathematical models and experiments, they tested how these kind of funnel arrays collect incident light and conduct it to the active layer of a silicon solar cell. Their result: this arrangement of funnels increases photo absorption by about 65% in a thin-film solar cell fitted with such an array and is reflected in considerably increased solar cell efficiency, among other improved parameters. [...]

  • <p>Dichromium: both chromium atoms "share" the  12 valence electrons which leads to a multible bond. </p>SCIENCE HIGHLIGHT      23.02.2015

    Stretch and relax! – Losing one electron switches magnetism on in dichromium

    An international team of scientists from Berlin, Freiburg and Fukuoka has provided the first direct experimental insight into the secret quantum life of dichromium. Whereas in its normal state the 12 valence electrons form a strong multiple bond between the two chromium atoms, removing only one electron changes the situation dramatically: 10 electrons localize and align their spins, thus resulting in ferromagnetic behavior of the dichromium-kation. The bonding is done by one electron only, resulting in a much weaker bond. The scientists used the unique Nanocluster Trap experimental station at the BESSY II synchrotron radiation source at Helmholtz-Zentrum Berlin and published their results in the Journal Angewandte Chemie. [...]

  • NACHRICHT      23.02.2015

    HZB-Zeitung „lichtblick“ erschienen

    Berlin ist für junge ausländische Forscherinnen und Forscher attraktiv. Doch es ist am Anfang nicht leicht, sich in Deutschland und am Helmholtz-Zentrum Berlin zu orientieren. Eine Postdoc-Initiative hilft nun, dass junge Wissenschaftler nach der Promotion besser am Zentrum Fuß fassen können. Wir stellen die Menschen hinter dieser Initiative und ihr Anliegen in der aktuellen Ausgabe vor. Hier geht es zur Online-Ausgabe der Zeitung. [...]

  • <p>Prof. Dr. J&uuml;rgen Janek, Universit&auml;t Gie&szlig;en</p>NEWS      20.02.2015

    Distinguished Lectures at HZB: Prof. Jürgen Janek will give talk about the Materials Research for "Next Generation" Batteries

    The search for new and the development of improved electrochemical energy storage systems stimulates world-wide research efforts in both academia and industry. While impressive improvements and cost reductions are still to be expected for lithium ionbatteries (LIB) and are part of enormous industrial efforts, more fundamental research aims for the creation and understanding of completely new cell types. [...]

  • <p>Prof. Dr. Joachim Dzubiella</p>NEWS      20.02.2015

    Joachim Dzubiella receives ERC Consolidator Grant

    Over the next five years, additional research funding in the amount of 2 million Euros will be available to HZB’s Prof. Dr. Joachim Dzubiella. The theoretical physicist, who teaches at Berlin’s Humboldt University and who also heads an HZB research group, is the latest recipient of a European Research Council Consolidator Grant. [...]

  • <p><br />The High-Field Magnet (HFM) has attained 26 tesla in an initial test and thereby exceeded expectations. The HFM team is pleased about the well-deserved success.<br /><br /></p>NEWS      19.02.2015

    The BER II neutron source is back in operation and available for experiments following the interruption in availability

    Maintenance work has been successfully concluded – the High-Field Magnet has successfully attained 26 tesla in initial testing. New scientific experiments have become possible. [...]

  • <p>The insulating LFO-layer in its normal state is antiferromagnetically ordered (AFM) and has no ferromagnetic domains. Due to the proximity to the ferromagnetic LSMO, ferromagnetic domains develop (white arrows) at the interface, pointing into the opposite direction of the LSMO-layer.</p>
<p></p>SCIENCE HIGHLIGHT      17.02.2015

    Insight into inner magnetic layers

    Measurements at BESSY II have shown how spin filters forming within magnetic sandwiches influence tunnel magnetoresistance – results that can help in designing spintronic components. [...]

  • <p>Sch&uuml;lerinnen und Sch&uuml;ler f&uuml;r Naturwissenschaften begeistern: Das HZB-Sch&uuml;lerlabor bot einen Workshop zu Magnetismus und Supraleitung an. Foto: G. Lampert</p>NACHRICHT      16.02.2015

    HZB-Schülerlabor beteiligt sich am MINT400-Hauptstadtforum

    Das Schülerlabor hat am Standort Wannsee im Rahmen des MINT400-Hauptstadtforums einen Workshop zum Thema  „Magnetismus und Supraleitung“  angeboten. 16 Schülerinnen und Schüler aus ganz Deutschland haben teilgenommen. Am Projekttag wurden Experimente mit Supermagneten zu Induktion, Wirbelstrom und Diamagnetismus durchgeführt. Im weiteren Verlauf wurde der Meißner-Ochsenfeld-Effekt mit YBCO-Supraleitern erkundet, die dazu mit flüssigem Stickstoff unterhalb ihrer Übergangstemperatur Tc abgekühlt wurden. Anschließend stand eine Führung durch die Augentumortherapie auf dem Programm. Der Tag endete mit weiteren Tiefkühlexperimenten und einem Laptop-Quiz zu den Themen des Tages. [...]

  • <p>Schon auf der Er&ouml;ffnungsveranstaltung war das HZB gut vertreten. Viele Arbeitsgruppen freuen sich nun auf die enge Zusammenarbeit im neuen Joint Lab mit den Kolleginnen und Kollegen aus der Theorie und der Simulation. Foto: Andreas Kubatzki/HZB</p>NACHRICHT      13.02.2015

    BerOSE - Joint Lab für Modellierung von Nanooptischen Strukturen

    HZB gründet mit FU Berlin und Zuse Institut Berlin das „Berlin Joint Lab for Optical Simulations for Energy Research (BerOSE)“ [...]

  • <p>F&uuml;r das Titelbild hat Teamleiter Peter Smeibidl seine Leute zum Klettern motiviert; die Ingenieure haben darin viel &Uuml;bung, denn beim Aufbau der gewaltigen Struktur m&uuml;ssen sie ohnehin &uuml;berall ran. Foto: Ingo Kniest/HZB</p>SCIENCE HIGHLIGHT      12.02.2015

    Forschungsmagazin „Sichtbar“: Große Forschung, interessante Leute, neue Perspektiven

    Auf dem Titelbild prangt ein echter Star: Der neue Hochfeldmagnet, umgeben und beklettert von den Physikerinnen und Experten, die in den letzten sieben Jahren am Aufbau dieses weltweit einzigartigen Großgeräts mitgearbeitet haben. Auch im Heft finden Sie Bilder und Geschichten aus der HZB-Forschung, die wir manchmal auch aus einer anderen Perspektive erzählen als sonst. [...]

  • <p>This illustrates a moment captured for the first time in experiments at SLAC National Accelerator Laboratory. The CO-molecule and oxygen-atoms are attached to the surface of a ruthenium catalyst. When hit with an optical laser pulse, the reactants vibrate and bump into each other and the carbon atom forms a transitional bond with the lone oxygen center. The resulting CO<sub>2</sub> detaches and floats away. </p>SCIENCE HIGHLIGHT      12.02.2015

    Details of a crucial reaction: Physicists uncover oxidation process of carbon monoxide on a ruthenium surface

    An international team has observed the elusive intermediates that form when carbon monoxide is oxidized on a hot ruthenium metal surface. They used ultrafast X-ray and optical laser pulses at the SLAC National Accelerator Laboratory, Menlo Park, California. The reaction between carbon monoxide and adsorbed oxygen atoms was initiated by heating the ruthenium surface with optical laser pulses. Directly afterwards, changes in the electronic structure of oxygen atoms were probed via X-ray absorption spectroscopy as they formed bonds with the carbon atoms.The observed transition states are consistent with density functional theory and quantum oscillator models. [...]

  • <p>180 scientists listened to the lectures. <span>The aim of the dialogue is to identify future scientific fields as well as expectations, needs and requirements</span> for BESSY II.</p>NEWS      05.02.2015

    BESSY II – From Pico to Femto – time resolved studies at BESSY II

    180 scientists attended the workshop on time resolved studies

  • NEWS      04.02.2015

    An new look at technicians and researchers: Exhibition at BESSY building

    For one whole year, Kevin Fuchs took photographs at Helmholtz-Zentrum Berlin. His pictures are on display in the BESSY building until 13/04/2015 [...]

  • <p>The local magnetisation is depicted by small arrows; a magnetic vortex is located in the centre. A brief current pulse through this nano-wire deflects the skyrmion  out of its rest position; it then moves back to its initial position on a spiral trajectory. This motion can be observed with the help of X-ray holography. The skyrmion and the spiral shape of its trajectory are represented schematically above the structure. </p>SCIENCE HIGHLIGHT      02.02.2015

    Spintronics: Dance of the nanovortices

    The trajectories of small magnetic entities referred to as skyrmions have been captured and recorded with the help of X-ray holography. Researchers gained new insight from the analysis of this motion: these nanoscale vortices possess mass. The discovery is published in Nature Physics 2 February 2015. [...]

  • <p>Nanodiamonds are tiny crystals only a few nanometres in size. Mohamed Sennour, MINES ParisTech.</p>SCIENCE HIGHLIGHT      28.01.2015

    Holes in valence bands of nanodiamonds discovered

    Researchers hope that their properties might be altered to permit nanodiamonds to be used as catalysts for generating hydrogen from sunlight [...]

  • <p>Prof. Bernd Rech (Foto: HZB) im <a href="http://www.weltderphysik.de/mediathek/podcast/" class="Extern">Interview</a> bei Welt der Physik</p>NACHRICHT      23.01.2015

    Heute schon geforscht? Bernd Rech im Podcast von Welt der Physik

    Im wöchentlichen Podcast der Internetplattform "Welt der Physik" spricht Bernd Rech, Leiter des HZB-Instituts für Silizium-Photovoltaik und Sprecher des Helmholtz-Forschungsprogramms Erneuerbare Energien, in der Folge 177 über aktuelle Trends zum Thema Solarzellen. Er beschreibt die Vor- und Nachteile von anorganischen und organischen Solarmaterialien. Und er stellt eine der neuesten Entwicklungen aus seinem Institut vor, eine Kombination aus zwei Siliziumschichten und einem organischen Material. [...]

  • <p>All about Kesterite-Solarcells, just published. </p>SCIENCE HIGHLIGHT      23.01.2015

    Just published: New book on CZTS-based thin film solar cells published

    In time at the start of the new year the book "Copper Zinc Tin Sulfide-based Thin Film Solar Cells" was published (Wiley, 2015, ed. by K. Ito), in which also scientists from the HZB are involved. Thomas Unold, Justus Just and Hans-Werner Schock provided the chapter "Coevaporation of CZTS Films and Solar Cells", Susan Schorr has contributed the chapter "Crystallographic Aspects of CZTS". [...]

  • <p>Ausstellung der Bilder von Kevin Fuchs ab 29. Januar im BESSY-II-Geb&auml;ude, hier eine Aufnahme von der Ausstellung im SEZ Berlin.</p>NACHRICHT      22.01.2015

    My Beamline - Eröffnung einer Fotoausstellung im BESSY-Hauptgebäude

    Kevin Fuchs hat im Rahmen seines Fotografiestudiums den Synchrotronring BESSY II und den Forschungsreaktor BER II besucht. Für seine Abschlussarbeit hat er Anlagen und Menschen mit künstlerischem Blick in Szene gesetzt. Ab 29. Januar werden die Bilder nun im BESSY II-Gebäude (3. Etage) für zirka zwei Monate zu sehen sein. Zur Ausstellungseröffnung am 29. Januar, 14:00 Uhr, laden wir alle HZB-Mitarbeiterinnen und Mitarbeiter sowie Gäste herzlich ein. Wir bitten um Anmeldung per mail an jennifer.bierbaum@helmholtz-berlin.de. [...]

  • <p>Hard disc from space: the Pallasite meteorite, studied by Harrison, contains information about the early solar system.<br /><em></em></p>SCIENCE HIGHLIGHT      22.01.2015

    Messages From Space

    Geologists from the University of Cambridge uncover hidden magnetic messages from the early solar system in meteorites measured at BESSY II. The team of scientists led by Dr. Richard Harrison has captured information stored inside tiny magnetic regions in meteorite samples using the PEEM-Beamline at BESSY II. [...]

  • <p>Artificial catalysts imitate natural photo-synthesis.<br />Image </p>SCIENCE HIGHLIGHT      21.01.2015

    The path to artificial photosynthesis

    HZB researchers describe efficient manganese catalyst capable of converting light to chemical energy [...]

  • NEWS      20.01.2015

    Dancing BESSY-VSR

    Paul Goslawski from Godehard Wüstefeld's team was the initiator of this project: Why not demonstrate in vivid form, what the future project BESSY-VSR is all about? With novel cavities to be introduced in synchrotron storage ring BESSY II, the new BESSY-VSR is supposed to compress some of the stored electron buckets. So it is possible to produce brilliant light pulses with variable length: short and long pulses in one ring. The user is able to choose what kind of pulse he needs for his experiment. But the team still has to solve some tricky problems. [...]

  • NACHRICHT      15.01.2015

    HZB baut Forschung an elektrochemischen Energiespeichern aus

    Arbeitsgruppen am HZB untersuchen neuartige Batteriesysteme und elektrochemische Energiespeicher im Helmholtz-Forschungsprogramm „Speicher und vernetzte Infrastrukturen“ [...]

  • <p>A general view of the VEKMAG end-station. The vector magnet chamber (grey) is supported by a hexapod frame. Below the magnet  one can distinguish the detector chamber (green) and  in the forward direction the deposition chamber (dark grey) is displayed. The beam quality is monitored by a diagnostic chamber (yellow) positioned in front of the magnet chamber. </p>NEWS      15.01.2015

    “VEKMAG” at BESSY II creates 3D magnetic fields in samples

    Together with HZB, teams from the Universität Regensburg, from the Freie Universität Berlin and from  the  Ruhr Universität Bochum have jointly set up a unique measurement station at BESSY II: a vector electromagnet consisting of three mutually perpendicular Helmholtz coils which enables  setting the local magnetic field at the sample position  to any orientation desired. The first measurements of magnetic materials, spin systems, and nanostructured magnetic samples are scheduled for early 2015. [...]

  • <p><span class="imageCaption">Researchers at PSI spotted a curious black-and-white magnetic substructure on a five-by-five micrometre square &ndash; and were reminded of the stylised Batman logo. The black areas reveal where the magnetisation is pointing downwards, i.e. into the picture; the white ones where it is pointing upwards. <br /></span></p>SCIENCE HIGHLIGHT      12.01.2015

    Batman lights the way to compact data storage

    Researchers at the Paul Scherrer Institute (PSI) have succeeded in switching tiny, magnetic structures using laser light and tracking the change over time. In the process, a nanometre-sized area bizarrely reminiscent of the Batman logo appeared. The research results could render data storage on hard drives faster, more compact and more efficient. [...]

  • <p>The a-Si:H is deposited on a AZO-film that acts as a transparent front contact. A ITO-layer serves as rear contact. The organic sub-cell possesses a front contact made of a conductive polymer material (PEDOT) and a metallic rear contact.</p>SCIENCE HIGHLIGHT      12.01.2015

    Maximum efficiency, minimum materials and complexity

    Silicon-based thin-film solar cell with a supplementary organic layer can utilise infrared light as well [...]

  • <p>HZB-scientists Karsten Holldack, Alexander Schnegg and Joscha Nehrkorn at the BESSY II Beamline.</p>SCIENCE HIGHLIGHT      06.01.2015

    New light shed on electron spin flips

    Researchers from Berlin Joint EPR Lab at Helmholtz-Zentrum Berlin (HZB) and University of Washington (UW) derived a new set of equations that allows for calculating electron paramagnetic resonance (EPR) transition probabilities with arbitrary alignment and polarization of the exciting electromagnetic radiation. The validity of the equations could be demonstrated with a newly designed THz-EPR experiment at HZB’s storage ring BESSY II. This progress is relevant for a broad community of EPR users and is published in Physical Review Letters on January 6. 2015 (DOI 10.1103/PhysRevLett.114.010801). [...]

  • <p>Crystal structures of HgBa<sub>2</sub>CuO<sub>4</sub>+ and YBa<sub>2</sub>Cu<sub>3</sub>O<sub>6</sub>+</p>SCIENCE HIGHLIGHT      22.12.2014

    Universality of charge order in cuprate superconductors

    Charge order has been established in another class of cuprate superconductors, highlighting the importance of the phenomenon as a general property of these high-Tc materials. [...]

  • <p>Aus dem Technikum</p>NACHRICHT      18.12.2014

    Hochfeldmagnet sucht Neutronenleiter

    Am Freitag, den 12. Dezember 2014 fand der Umzug des Hochfeldmagneten an seinen endgültigen Aufstellungsort in der Neutronenleiterhalle statt. Eine Spezialfirma für Maschinentransporte bugsierte den über 25 Tonnen schweren Stahlkoloss aus dem HFM-Technikum heraus und setzte ihn in Bewegung. [...]

  • <p>Prof. Dr. Oguz Okay lehrt Physikalische Chemie an der Istanbul Technical University und gilt als einer der besten Polymerforscher der T&uuml;rkei. Nun kommt er als Gast ans HZB.</p>NACHRICHT      18.12.2014

    Georg-Forster-Forschungspreis an Oguz Okay

    Die Alexander von Humboldt-Stiftung hat gestern acht mit jeweils 60.000 Euro dotierten Georg Forster-Forschungspreise vergeben. Unter den Preisträgern ist  Prof. Dr. Oguz Okay (59), Istanbul Technical University, der nun für einen Gastaufenthalt an das HZB-Institut für Weiche Materie und Funktionale Materialien nach Berlin kommt. [...]

  • <p>The Advanced Photon Source facility illuminated by lightning. (</p>NEWS      10.12.2014

    D-Lecture: A Light and a Beam

    Dr. Alexander Zholents from Argonne National Laboratory will present on 18th December 2014 his thoughts on "A Light and a Beam: a Theme with Variations". The presentation will be given at the lecture hall of the Wilhem-Conrad-Röntgen-Campus of HZB at 2 pm. After the presentation, we invite you to “Glühwein” and informal discussion. [...]

  • <p>Markus Ries (left) and Alex Manuel Frano Pereira (right) were awarded by Prof. Mathias Richter of "HZB Circle of Friends" the Ernst-Eckhard Koch-Prize for their outstanding PhD-projects. </p>NEWS      08.12.2014

    Lively exchange at User Meeting

    From December 3 to 5, more than 500 users of HZB's BER II and BESSY II large-scale equipment met up to discuss the current state of technology and exchange their views on pressing scientific issues. [...]

  • NEWS      01.12.2014

    Sixth Joint BER II and BESSY II User Meeting

    The annual Joint HZB User Meetings will provide an overview of the many exciting and inspiring research results obtained at our facilities in the past year. The Sixth Joint BER II and BESSY II User Meeting will take place at Berlin-Adlershof from December 3rd to December 5th, 2014. The neutrons session will take place at Berlin-Wannsee on Wednesday, 3rd December, followed by Dinner at Café Jahn. [...]

  • <p>The new organic material is able to &ldquo;add up&rdquo; low-energy photons (red) to yield higher-energy light (blue), which can then be harvested by the solar cell. </p>SCIENCE HIGHLIGHT      27.11.2014

    Organic layer adds light particles

    Solar cells can only use photons with energies above a specific threshold to generate electricity. A German-Australian research collaboration has now combined solar cells with an organic material which can “add up” low-energy photons to yield higher-energy light, which can then be harvested by the solar cell. In an invited review paper published in the prestigious journal Energy & Environmental Science the scientists give an overview on the fascinating phenomenon of photonic upconversion and report new results: The organic layers show less photo-degradation than suspected and may also be used for other optoelectronics applications. [...]

  • <p>Prof. Dr. Andreas Marx is this year&rsquo;s recipient of the Karl Heinz Beckurts Award.</p>NEWS      26.11.2014

    Artificial evolution for medical application

    2014 Karl Heinz Beckurts Award goes to Prof. Dr. Andreas Marx [...]

  • <p>Patient im Behandlungsstuhl</p>
<p></p>NACHRICHT      25.11.2014

    2500 Augentumor-Patienten von der Charité mit Protonen am Helmholtz-Zentrum Berlin bestrahlt

    Am Freitag, dem 21. November 2014, wurde um 16:10 Uhr die Bestrahlungsserie der 2500.  Protonentherapiepatientin, am Helmholtz-Zentrum Berlin erfolgreich abgeschlossen. Seit 1998 behandelt die Augenklinik der Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, in Kooperation mit der dortigen Klinik für Radioonkologie und Strahlentherapie Augentumore, insbesondere Aderhautmelanome, mit dem Protonenstrahl des Helmholtz-Zentrums Berlin für Materialien und Energie am Campus Lise-Meitner in Berlin Wannsee. [...]

  • <p>Sch&uuml;lerlabore im HZB gibt es u.a.zu den Themen "Licht und Farbe" und "Solarenergie". Beim Helmholtz-Tag am 18. November erfahren die Sch&uuml;lerinnen und Sch&uuml;ler etwas &uuml;ber Magnetismus. (Foto: kmh)</p> <p></p>NACHRICHT      17.11.2014

    Helmholtz-Tag im Schülerlabor

    Die Schülerlabore der Helmholtz-Gemeinschaft veranstalten am 18. November zum dritten Mal den Helmholtz-Tag. Mit dabei ist auch das Helmholtz-Zentrum Berlin. Schülerinnen und Schüler von der Grund- bis zur Berufsschule erhalten einen Einblick in die Forschungsarbeit von Hermann von Helmholtz und können zudem in den Laboren selbst experimentieren. Der Namenspatron der Helmholtz-Gemeinschaft gehörte zu den bedeutendsten Naturwissenschaftlern des 19. Jahrhunderts und war einer der letzten Universalgelehrten. [...]

  • <p>Both figures display experimental data on the &ldquo;Dirac cone".</p>SCIENCE HIGHLIGHT      14.11.2014

    Warping in topological insulators

    Topological insulators are promising to develop into a material for lossless electricity and information transport. Now, Jaime Sánchez-Barriga and colleagues from HZB investigated for the first time whether the direction of motion of electrons in topological insulators affects their behavior. In their work they identified directions along which electrons are much more prone to scattering losses and cannot conduct as well. To explain their results, they included the spin of the electron and questioned an established theory. The results could push topological insulator research, especially when a future BESSY-VSR will be available to provide much shorter light pulses to study the dynamics of the electrons. Their investigation into the "warping" of topological insulators is published by Physical Review B and has been selected as "Editor's Suggestion". Only six percent of the articles  published there receive this sort of acclaim. [...]

  • <p>Logo der Jahrestagung FVEE 2014</p>NACHRICHT      11.11.2014

    Jahrestagung des ForschungsVerbund Erneuerbare Energien

    Unter dem Motto „Forschung für die Energiewende – Phasenübergänge aktiv gestalten“ fand am 7. und 8. November die Jahrestagung des ForschungsVerbund Erneuerbare Energien (FVEE) im Umweltforum Berlin statt. Vertreter aus Wissenschaft und Politik referierten über den proaktiven Umgang mit den technologischen, ökonomischen sowie politisch-gesellschaftlichen Herausforderungen der Energiewende. [...]

  • <p>Exploded view drawing of the electrochemical flow cell for soft x-ray absorption and emission spectroscopy. The membrane (yellow) is coated with a metal, serving as working electrode (WE) and that also serves as a support for the solid sample. Counter (CE) and reference electrode (RE) are placed in the liquid chamber. Tubes are attached to allow fast and easy liquid exchange and to prevent radiation damage. <br /><br /></p>NEWS      05.11.2014

    New in situ cell for investigating solid- and liquid-state samples and their interfaces under electrical voltage

    A team headed by Dr. Kathrin Aziz-Lange has developed a new in-situ cell for X-ray spectroscopy of fluid samples and their interfaces to solid bodies. What is special is the cell contains electrodes that can expose the sample to voltage during or between measurements. The resulting changes triggered in the electrical structure of the sample can be observed with the help of X-ray absorption and emission spectroscopy in real time. [...]

  • <p>Optical image of a filled root.<br /></p>NEWS      30.10.2014

    Root canal treatment procedures investigated at BESSY II

    Two scientists have examined several dozen dental roots at BESSY II, both before and after treatment and found that the mechanical procedures during treatment are rather not contributing to micro fractures. [...]

  • <p>Das HZB beteiligt sich am Aufbau zweier Studieng&auml;nge an derT&uuml;rkisch-Deutschen Universit&auml;t in Istanbul. <a href="http://www.tau.edu.tr" class="Extern">www.tau.edu.tr</a></p>NACHRICHT      28.10.2014

    Deutsch-Türkische Universität am HZB zu Gast

    Vizerektor und Dekan der Naturwissenschaftlichen Fakultät besuchte mehrere Institute des HZB [...]

  • <p>Fotostrecke von Kevin Fuchs "MY BEAMLINE"</p>NACHRICHT      23.10.2014

    Impressionen der Fotoausstellung #achtens

    Die Abschlussklasse 2014 der OSTKREUZSCHULE hat die Fotoausstellung im SEZ am 17.10.2014 erfolgreich eröffnet, rund 4.500 Besucher kamen zur Vernissage. [...]

  • <p>In january 2014, the HFM was just delivered to HZB.  </p>NEWS      22.10.2014

    26 tesla! High field magnet exceeds everyone’s expectations

    It’s done! The high field magnet is consistently producing magnetic fields of approx. 26 tesla and staying at this value over extended periods of time. And all this in spite of the fact that 26 tesla exceeds the original 25-tesla goal; in other words, the magnet turns out to be even stronger than anyone had hoped for. On Thursday afternoon, October 16, 2014, Dr. Peter Smeibidl who heads the HFM’s team of eight was able to report on their success and thank everyone involved with setting up the complex high field magnet with its own cooling systems and 4-megawatt power supply. [...]

  • <p>HZB Freigeist Fellow: Dr. Annika Bande<br />Foto: Mirko Krenzel for VolkswagenStiftung</p>NEWS      17.10.2014

    HZB Freigeist Fellow Dr. Annika Bande

    As of early October, the HZB is home to one of the Volkswagen Foundation's Freigeist Fellows: Dr. Annika Bande recently joined Prof. Dr. Emad Aziz' institute "Methods for Material Development". There she will build up her own junior research group with initially three PhD students. [...]

  • <p>The Adlershof Science Forum is encouraging exchange among scientists in Adlershof.</p>NEWS      16.10.2014

    SAVE THE DATE: Adlershofer Science Forum on 11.11.2014 with Poster Session

    Please save the date to participate on 11. November 2014 at  „Adlershof Science Forum“ (AFF) of Humboldt-Universität zu Berlin and IGAFA. The event is meant to encourage exchange and communication between scientists working at Adlershof. [...]

  • <p>RIXS-spectroscopy is a powerful method to gain insights into molecular and electronic structures in complex samples, liquid or solid. HZB scientists now know even a bit better how to interpret the RIXS-spectra. </p>SCIENCE HIGHLIGHT      14.10.2014

    New light on the "Split Peak" in x-ray (RIXS) spectra of Alcohols

    New study from Helmholtz-Zentrum Berlin in the journal "Structural Dynamics" makes sense of mysterious spectra, paving way for RIXS spectroscopy probe dynamic electronic structure of complex liquids and materials [...]

  • NEWS      09.10.2014

    Tailored Disorder: Priority Programme starts with Kick-off-Meeting


  • <p>Kevin Fuchs took pictures of "futuristic experiments."</p>NEWS      08.10.2014

    A Photographer`s Views of Research Facilities

    For his final exam, photography student Kevin Fuchs has taken pictures of the reseach facilities BESSY II and BER II and the scientists working there. Swiss born Fuchs now invides for a preview of his pictures and of the photographs of his fellow students on Oct.17 at 7 p.m. at SEZ Berlin, Landsberger Allee 77. The exhibition will be open from Oct. 18 to Oct. 26. [...]

  • SCIENCE HIGHLIGHT      06.10.2014

    Open Access: Webinar for Helmholtz Ph.D. students

    As part of the international Open Access Week 2014, a series of events around the World will help canvass and inform about open access to knowledge. [...]

  • <p>WDR-Moderator Andr&eacute; Gatzke erkl&auml;rt mit Schaumk&uuml;ssen, was ein Vakuum ist.&nbsp;</p>NACHRICHT      03.10.2014

    "Sendung mit der Maus" berichtet vom BESSY-"Türöffner"-Tag

    Die "Sendung mit der Maus" hat am 3. Oktober eine Reportage vom BESSY-"Türöffner"-Tag gesendet.  Reporter André Gatzke erklärte dabei, was ein Vakuum ist. [...]

  • SCIENCE HIGHLIGHT      29.09.2014

    Tage der Forschung in Adlershof

    Am 25. und 26. September fanden in Adlershof die jährlichen Tage der Forschung statt. Das HZB bot rund 90 Schülerinnen und Schülern in drei unterschiedlichen Programmpunkten einen Einblick in die Welt der Forschung. [...]

  • <p>At first, the various parts are carefully unloaded so that they can be lifted quickly into the building through the roof of the NEAT building's newest addition.</p>
<p></p>NEWS      26.09.2014

    NEAT: The chamber from Spain - HZB future log's latest addition

    Since the HZB future log (#HZBzlog) went live in March of this year, there have been a total of 15 episodes on building and developing our future projects. The focus has been on three projects in particular: high field magnet (for a total of seven episodes), EMIL (five episodes), and BESSY-VSR (three episodes). Next, the NEAT project team is taking the #HZBzlog stage. [...]

  • SCIENCE HIGHLIGHT      26.09.2014

    German Society for Materials Science awards publication with HZB scientist as co-author

    At its annual conference on September 22, 2014, the German Society for Materials Science (DGM), presented the Werner Köster Award for best publication. The work, whose authors include HZB scientist Dr. Michael Tovar and which has been published in the International Journal of Materials Research, examines the catalytic effect of vanadium pentoxide in propene synthesis from propane using spectroscopic, microscopic, and radiographic methods. [...]

  • SCIENCE HIGHLIGHT      26.09.2014

    “Multi-spectra glasses” for scanning electron microscopy

    Reflection zone plates produced by HZB enable lighter elements in material samples to be precisely detected using scanning electron microscopy (SEM) by providing high resolution in the range of 50-1120 eV. [...]

  • <p>Im ehemaligen Plenarsaal der Bundesregierung in Bonn finden die Vort&auml;ge statt.</p>NACHRICHT      23.09.2014

    Deutsche Tagung für Forschung mit Synchrotronstrahlung, Neutronen und Ionenstrahlen an Großgeräten in Bonn

    Das HZB ist mit eigenem Stand, Vortrag und Postern präsent auf der Deutschen Tagung für Forschung mit Synchrotronstrahlung, Neutronen und Ionenstrahlen an Großgeräten (SNI). Die dreitägige Veranstaltung findet vom 21. bis 23.09. im ehemaligen Plenarsaal der Bundesregierung im heutigen World Conference Centers in Bonn statt. [...]

  • <p>Bernd Rech will focus on renewable energy issues<strong>.<br /></strong></p>NEWS      23.09.2014

    Bernd Rech boardmember of the "work group of energy"

    Prof. Bernd Rech will speak on recent findings in thin film silicon photovoltaik research at the autumn meeting of the energy work group of the Deutsche Physikalische Gesellschaft. Rech had been elected into the board of the work group earlier this year. [...]

  • <p>Summerstudents after their visit of BESSY II. </p>NEWS      15.09.2014

    Final spurt of Summer students blog

    A new blog features the experiences of HZB’s summer students in 2014. In total 24 students have come from Japan, Denmark, India, Spain, Greece, Russia or other countries. For 8 weeks, during August and September, they are working on a project in a science team at the HZB. They are young and motivated, willing to sacrifice their summer holidays and to spend them in a lab instead! [...]

  • <p>Das Forschungsmagazin Sichtbar erscheint zweimal j&auml;hrlich.</p>SCIENCE HIGHLIGHT      10.09.2014

    Sichtbar: Das Forschungsmagazin aus dem HZB

    Die neue Sichtbar ist erschienen. Mit Interviews, Hintergrundberichten und Meldungen zeigt das Magazin, an welchen Fragen HZB-Forscherinnen und -Forscher arbeiten: Von neuen Solarzellen bis hin zu Mikrogelen, aus denen sich komplexe funktionale Materialien für medizinische Anwendungen komponieren lassen, zum Beispiel für eine effizientere Dialyse. [...]

  • <p>Outstanding researchers took part in the &ldquo;New Trends in Topological Insulators 2014&rdquo; - workshop.</p>NEWS      01.09.2014

    Leading scientists on topological insulators met in Berlin

    From July 7-10, 150 researchers met in Berlin to discuss recent findings in the field of topological insulators. [...]

  • SCIENCE HIGHLIGHT      22.08.2014

    Proteins: New class of materials discovered

    German-Chinese research team gleans seminal insights into protein crystalline frameworks at HZB's BESSY II [...]

  • SCIENCE HIGHLIGHT      11.08.2014

    Neuer „lichtblick“ online

    Ein Denkmal im Ehrenhof der Humboldt-Universität erinnert seit kurzem an Lise Meitner – das erste Denkmal für eine Wissenschaftlerin in Deutschland überhaupt. Über die außergewöhnliche Wissenschaftlerin und die Entstehung der Bronze berichten wir in der aktuellen Ausgabe der HZB-Mitarbeiterzeitung „lichtblick“, die jetzt auch online ist. [...]

  • <p>Cryogenic TEM micrograph of gold nanoparticles (Au-NP) in DES-solvent. Sputtering duration 300 s. Red circles show the different domains of self-assembled Au-NPs. The inset shows an enlarged image of one particular domain of self-assembled Au-NPs.<br /></p>SCIENCE HIGHLIGHT      04.08.2014

    Self-assembly of gold nanoparticles into small clusters

    Researchers at HZB in co-operation with Humboldt-Universität zu Berlin (HU, Berlin) have made an astonishing observation: they were investigating the formation of gold nanoparticles in a solvent and observed that the nanoparticles had not distributed themselves uniformly, but instead were self-assembled into small clusters. [...]

  • <p>Reconstructed energy-selective neutron tomography: Visualization of austenite and martensite distribution in torsion (two images to left) and tensile (image to the right) loading.<br /></p>SCIENCE HIGHLIGHT      31.07.2014

    Neutron Tomography technique reveals phase fractions of crystalline materials in 3-Dimensions

    Researchers at Helmholtz-Zentrum Berlin (HZB) and The University of Tennessee Knoxville (UTK) developed a novel method, based on energy-selective neutron imaging for visualization of crystalline phase distributions within the bulk of metallic samples. [...]

  • <p><span>Im Kontrollraum von BESSY II lie&szlig; sich der DFG-Pr&auml;sident Prof. Dr. Peter Strohschneider erl&auml;utern, wie die Synchrotronquelle betrieben wird. Foto: HZB</span></p>NACHRICHT      29.07.2014

    DFG-Präsident besucht BESSY II

    Am 18. Juli besuchte Prof. Dr. Peter Strohschneider den Berliner Elektronenspeicherrng BESSY II am HZB und informierte sich über die Bedeutung der Synchrotronstrahlung für die Material- und Energieforschung. Außerdem konnte er das PVcomB besichtigen. [...]

  • <p>Der parlamentarische Staatssekret&auml;r des BMBF Stefan M&uuml;ller im Kontrollraum von BESSY II. Foto: HZB</p>NACHRICHT      28.07.2014

    BMBF-Staatsekretär Stefan Müller bei BESSY II zu Gast

    Seit Dezember 2013 ist Stefan Müller Parlamentarischer Staatssekretär bei der Bundesministerin für Bildung und Forschung Prof. Dr. Johanna Wanka. Nun informierte sich Stefan Müller über die Forschung am BESSY II. Der Besuch fand am Mittwoch, den 16. Juli 2014 statt. [...]

  • <p>Sebastian Seiffert forscht am HZB-Institut "Weiche Materie und funktionale Materialien" und leitet auch an der Freien Universit&auml;t Berlin eine Arbeitsgruppe.</p>NACHRICHT      28.07.2014

    GDCh zeichnet Sebastian Seiffert aus

    Prof. Dr. Sebastian Seiffert erhält eine weitere Auszeichnung für seine Forschungsarbeit. Die Gesellschaft Deutscher Chemiker (GDCh) hat mitgeteilt, dass Seiffert den Preis für Nachwuchswissenschaftler auf dem Gebiet der Makromolekularen Chemie erhalten wird. Der Preis wird ihm im Rahmen der Konferenz "Polymers and Energy" überreicht, die vom 14. bis 16. September in Jena stattfindet. [...]

  • <p>Prof. Dr. Leone Spiccia will spent research time at HZB next spring.</p>NEWS      01.07.2014

    Australian top-chemist gains Helmholtz International Fellowship to visit HZB and HZDR

    Prof. Dr. Leone Spiccia from the Monash University Melbourne was awarded the Helmholtz International Fellowship. In addition to the prize money of €20,000 each, he is invited to conduct research at HZB in Berlin and HZDR in Dresden. At HZB he is expected in spring 2015 in the group of Prof. Dr. Emad Aziz. The award honours excellent research and supports establishing new cooperation structures with international research institutions. [...]

  • <p>SEM image of the membrane. </p>SCIENCE HIGHLIGHT      01.07.2014

    “Muscled skin”: Simple formulas describe complex behaviors

    HZB researchers help chemists understand polymeric "biomimetic" materials' mechanical properties [...]

  • <p>Ammonium tungstate/PSS film surface:  (a) SEM picture before pyrolysis; (b &amp; c) SEM picture after pyrolysis. </p>SCIENCE HIGHLIGHT      01.07.2014

    Collecting light with artificial moth eyes

    Scientists at EMPA in Zürich and University of Basel have developed a photoelectrochemical cell, recreating a moth’s eye to drastically increase its light collecting efficiency. The cell is made of cheap raw materials – iron and tungsten oxide. Analyses at BESSY II have revealed which chemical processes are useful to facilitate the absorption of light. [...]

  • NEWS      26.06.2014

    Invitation: Reception Final Assembly of HFM

    Six years full of hard work with planning and constructing the High-Field Magnet for Helmholtz-Zentrum Berlin we are proud to inform you that the final assembly is now complete. [...]

  • <p>When inserting an ultrathin dielectric between metal electrode and organic semiconductor, charge carriers (shown here for a positively charged holes in red) are, counter intuitively, more efficiently extracted from their transport level (blue) in the organic to the Fermi level (black) in the metal than without the interlayer.</p>SCIENCE HIGHLIGHT      18.06.2014

    Electrostatics do the trick

    A simple model describes what happens between organic semiconductors and metals [...]

  • <p>These scanning electron micrographs show how accurately the three Fresnel zone plates were positioned above one another. 3D X-ray optics of this kind allow the resolutions and optical intensities to be considerably improved.</p>SCIENCE HIGHLIGHT      18.06.2014

    Sharper imaging using X-rays

    HZB team develops three-dimensional volume diffraction optics for X-rays [...]

  • <p>The graduate students Jens V&ouml;ker and Christoph Kunert received a IPAC grant and presented their work on a student poster sesson.</p>NEWS      16.06.2014

    1200 accelerator physicists from around the world meet in Dresden

    The world’s largest particle accelerator conference is being held in Germany for the first time, with around 1200 scientists expected to visit the Saxon capital Dresden from 15 to 20 June. The 5th international conference IPAC is the place for experts to share the advancements they have made in developing particle accelerators and their components. [...]

  • NEWS      03.06.2014

    Matthias May receives the Poster Prize at the Wilhelm und Else-Heraeus Seminar

    Matthias May, PhD student at the HZB Institute for Solar Fuels, was awarded a Poster Prize at the 562nd WE Heraeus Seminar “From Sunlight to Fuels” for his scientific work. From 11 to 16 May 2014, the participants of the WE Heraeus seminar concentrated intensively on the topic of “converting sunlight to hydrogen” and discussed new materials and processes for photovoltaic and (photo)catalytic applications.
    Matthias May impressively demonstrated on his poster how water acts on differently prepared surfaces of III-V compound semiconductors and what interactions occur. It is highly important to study this effect in detail because the initial reaction with water is critical in the development of suitable materials and processes for solar fuels. May prepared two different surfaces of gallium and indium phosphide and then analyzed and compared the influence of water using photoelectron spectroscopy and in-situ reflection anisotropy spectroscopy. [...]

  • <p>Prof. Dr. Emad Aziz is a professor at Freie Universit&auml;t Berlin and head of a research group at HZB. At the Bunsen-Tagung Dr. Peter Goelitz, Chief Editor of "Angewandte Chemie" congratulates him. Photo: E. Wille</p>NEWS      30.05.2014

    Emad Aziz receives Nernst-Haber-Bodenstein-Award

    On 29. May 2014, the German Bunsen Society for Physical Chemistry has honored Prof. Dr. Emad Flear Aziz with the Nernst-Haber-Bodenstein-Award. Aziz is leading research teams at HZB and „Freie Universität Berlin“,  where he has built up the Joint Ultrafast Dynamics Lab in Solutions and at Interfaces. [...]

  • <p>Some contemporary Synchroton Radiation methods need pulsed x-rays with a specific time structure. HZB-users at BESSY II can use them now on demand. </p>
<p></p>NEWS      30.05.2014

    X-ray pulses on demand from Electron Storage Rings

    HZB physicists recently devised a new method to pick single x-ray pulses out of the pulse trains usually emitted from synchrotron radiation facilities. The technique is very useful to support studies of electronic properties of quantum materials and superconductors and paves the way for future synchrotron facilities with variable pulse lengths. [...]

  • <p>Im Mittelpunkt der Ausstellung steht die Gipsfigur der Lise Meitner, die Grundlage f&uuml;r die Bronze-Skulptur des Denkmals ist. Die Skulptur wird auf einem &uuml;bergro&szlig;en, symboltr&auml;chtigen Sockel im Ehrenhof der Humboldt-Universit&auml;t zu Berlin stehen.</p>NACHRICHT      26.05.2014

    Modelle und mehr. Eine Ausstellung mit Werken von Anna Franziska Schwarzbach, Preisträgerin des Kunstwettbewerbes zum Lise-Meitner-Denkmal

    Vom 19.05.2014 bis 20.06.2014, im Lichthof der Humboldt-Universität Unter den Linden 6, Eintritt frei [...]

  • <p>Die drei Vertreterinnen des&nbsp;<a href="http://hzbzlog.com/" class="Extern"> #HZBzlog</a> Sibylle Grunze, Ina Helms und Antonia R&ouml;tger (v.l.)</p>SCIENCE HIGHLIGHT      22.05.2014

    #HZBzlog gewinnt Deutschen Preis für Onlinekommunikation als beste Microsite

    Seit etwa vier Monaten ist das HZB-Zukunftslogbuch #HZBzlog mit seiner ungewöhnlichen Episodenstruktur online, und es findet immer mehr Fans. Die als Langzeitdokumentation angelegte Seite öffnet ein Fenster in die Forschung und gibt den Blick frei auf die Geschichten hinter den Kulissen. Täglich surfen zwischen 500 und 1.000 Menschen auf der Seite und warten gespannt auf neue lebendige Einträge rund um die großen Zukunftsprojekte am HZB. Vier Monate nach dem Start gewinnt das neue HZB-Portal nun den von der Deutschen Presseakademie herausgegebenen "Deutschen Preis für Onlinekommunikation" und ist auf dem besten Weg, ein Erfolg zu werden. [...]

  • <p><a href="https://www.helmholtz-berlin.de/media/media/aktuell/print//lichtblick/76/hzb_lichtblick_mai-2014_extern_web.pdf" class="Extern"><span class="Intern">Lichtblick zum Download</span></a></p>SCIENCE HIGHLIGHT      20.05.2014

    Neuer Lichtblick erschienen

    Am Campus Wannsee entstehen neue Labore für die Materialsynthese: In unserer Mitarbeiterzeitung "lichtblick" berichten wir erstmals über das neue Bauvorhaben, das Materialforscherinnen und -forscher anlocken soll. Die Labore werden benötigt, um erfolgreich neuartige Materialkonzepte für die Energieumwandlung und -speicherung zu charakterisieren. [...]

  • <p>In den Pausen tauschten sich die Teilnehmer angeregt &uuml;ber die Vortr&auml;ge und ihre eigenen Forschungsarbeiten aus. Foto: FAU&nbsp;</p>NACHRICHT      15.05.2014

    Das ganze Spektrum der Elektrokatalyse an einem Tag

    Am 4. April 2014 lud das Helmholtz-Institut Erlangen-Nürnberg (HI ERN) zu seiner ersten wissenschaftlichen Veranstaltung ein. Beim internationalen Symposium „Recent Achievements and Future Trends in Electrocatalysis“ präsentierten zehn führende Wissenschaftler auf dem Gebiet der “Elektrokatalyse” von hochrangigen nationalen und internationalen Forschungsstätten den rund 90 Teilnehmern ihre Forschungsarbeiten. [...]

  • NEWS      14.05.2014

    Prof. Dr. Silke Christiansen receives a distinguished visiting professorship at South Korean Chonbuk National University

    The president of Chonbuk National University, Suh Geo-Suk, has appointed Prof. Dr. Silke Christiansen “Distinguished visiting Professor” for three years in recognition of her extraordinary services in the field of renewable energies. Christiansen received the certificate of appointment at a ceremony in May together with two other outstanding foreign scientists. As a “Distinguished visiting Professor” at the Faculty of Semiconductor Physics and Chemistry, Silke Christiansen will be promoting the scientific contact between Helmholtz-Zentrum Berlin (HZB), Freie Universität Berlin (FU) and the Korean university. [...]

  • <p>Der Hochfeldmagnet am Helmholtz-Zentrum Berlin. Mit 25 Tesla liefert er weltweit das st&auml;rkste Magnetfeld im Zusammenhang mit Neutronenstreuexperimenten.<br />Foto: HZB</p>NACHRICHT      13.05.2014

    Internationale Gutachter loben Helmholtz-Zentrum Berlin

    Strategie des HZB für BER II und BESSY II und Planungen für die Restlaufzeit des Forschungsreaktors positiv bewertet  -  Betrieb ruht wegen aktueller Wartungsarbeiten [...]

  • <p><strong>Was passiert mit Schokok&uuml;ssen im Vakuum?</strong> Die beiden Jungen haben es zur Langen Nacht ausprobiert und einiges &uuml;ber das "Nichts" gelernt.</p>
<p></p>NACHRICHT      12.05.2014

    3.800 Menschen besuchten das HZB zur Langen Nacht der Wissenschaften

    „Schau rein, schlau raus“ – das Motto der diesjährigen Langen Nacht der Wissenschaften dürfte sich für die Besucher am Helmholtz-Zentrum Berlin mehr als erfüllt haben. 2.200 Mal öffneten sich am Samstag, dem 10. Mai die Türen des Elektronenspeicherrings BESSY II, der in Adlershof zur Entdeckungsreise einlud. Am benachbarten Institut für Silizium-Photovoltaik des Helmholtz-Zentrum Berlin informierten sich etwa 1.600 Menschen über die Energie der Zukunft, hörten Vorträge und besichtigten die Labore der Forscherinnen und Forscher. [...]

  • <p><sub>2</sub> (orange) on top of MoS<sub>2</sub> (blue). The SPEEM-microscopy reveals coupling between both layers and charge transfer. </p>NEWS      09.05.2014

    Energy efficient LEDs and lasers with Chalcogenide monolayers

    As reported by nanotechweb.org, monolayers of certain chalcogenides might be used to make energy-efficient nano-optoelectronics devices, such as LEDs, lasers, solar cells, and high-electron-mobility transistors. Scientists of the University of California at Berkeley, the Lawrence Berkeley National Lab and the Helmholtz-Zentrum Berlin für Materialien und Energie in Berlin investigated the electronic and optoelectronic properties of a so called heterojunction of WSe2/MoS2. [...]

  • <p>The optical properties of a material depend also on its nanostructure. </p>NEWS      09.05.2014

    Tailored disorder for optical applications

    HZB’s Silke Christiansen coordinates new DFG priority program  [...]

  • <p>alle</p>NACHRICHT      06.05.2014

    Lange Nacht der Wissenschaften - 10. Mai, 17 bis 0 Uhr: Besichtigen Sie den Elektronenspeicherring BESSY II und die Labore der Solarenergie

    Der Countdown läuft. Nur noch wenige Tage sind es, bis wir die Türen für Sie zur Langen Nacht der Wissenschaften öffnen. Hinter den Kulissen ist schon viel los, bis es am Samstag, dem 10. Mai ab 17 Uhr richtig ernst wird: unsere Forscherinnen und Forscher sind gerade dabei, spannende Mitmach-Experimente und informative Stationen vorzubereiten. Wir freuen uns, wenn Sie zur „klügsten Nacht des Jahres“ vorbeikommen und nicht nur neues Wissen, sondern auch einige „Aha-Erlebnisse“ mitnehmen. [...]

  • <p>Intensity distribution of XUV light in the slit plane. </p>NEWS      29.04.2014

    New tool for Joint Lab to investigate the chemistry of nature

    The Aziz’ team at the Joint Laboratory between Freie Universität Berlin and HZB has built a laser-based tabletop setup which generates ultrashort XUV light pulses and achieves their monochromatization by implementing special reflection zone plates, developed and produced by the team of Alexei Erko. [...]

  • <p>Crystal structure of human MTH1 in complex with a key inhibitor.<br />Source: Stockholm University, Prof. Pal Stenmark.</p>SCIENCE HIGHLIGHT      08.04.2014

    A new concept for the treatment of cancer

    A team of researchers from five Swedish universities has identified a new way to treat cancer. They present their concept in the journal „Nature“. It is based on inhibiting a specific enzyme called MTH1. Cancer cells, unlike normal cells, need MTH1 to survive. Without this enzyme, oxidized nucleotides are incorporated into DNA, resulting in lethal DNA double-strand breaks in the cancer cells. The research group at Stockholm University has determined the structure of MTH1 based on diffraction measurements at HZB´s MX-beamline at BESSY II. These detailed structural studies are important for the development of efficient inhibitors targeting MTH1. [...]

  • <p>The topography of the sample surface can be seen here (white lines around the nano-particles) as well as the local optical excitations. The image displays several &ldquo;hot spots&rdquo; (yellow) that arise through interactions of the nanoparticles with the light and also with one another.<br /></p>NEWS      07.04.2014

    Even thinner solar cells through use of nanoparticles

    Nanostructures could enable more light to be directed into the active layer of solar cells, increasing their efficiency. Prof. Martina Schmid (HZB und Freie Univ. Berlin) has now measured how irregularly distributed silver particles influence the absorption of light. She demonstrated that nanoparticles interact with one another via their electromagnetic near-fields, so that local “hot spots” arise where light is concentrated especially strongly. [...]

  • <p><span>Das HZB pr&auml;sentiert auf der Hannover Messe Themen aus dem Bereich Energieforschung auf dem Gemeinschaftsstand "</span><span><span>Energy Research".</span></span></p>NACHRICHT      07.04.2014

    Das HZB auf der Hannover Messe

    Die Hannover Messe, die weltweit größte Industriemesse, wurde heute eröffnet. Das HZB ist als Aussteller auf dem Themenstand »Energy Research« in der Halle 2 Stand C.62  vertreten. Die Themenschwerpunkte in der Halle "Research & Technology" sind u.a. Energieeffizienz, Erneuerbare Energien, Energiespeicherung, Energieverteilung/Smart Grids, Ressourcenmanagement und  Elektromobilität. [...]

  • <p>Advanced analytics for both thin film technologies with silicon as well as CIGS: Beside highly developed deposition tools, a comprehensive infrastructure was set up at PVcomB. Here, a glass substrate is loaded into a multi-chamber deposition tool where it will be deposited with only a few micrometers of silicon layers forming finally the active part a solar cell.</p>
<p>Foto: Berlin Partner f&uuml;r Wirtschaft und Technologie / Monique W&uuml;stenhagen</p>NEWS      02.04.2014

    New Thin Film Photovoltaic World Record announced on Conference in Berlin

    The 5th International Workshop on CIGS Solar Cell Technology organized bei Helmholtz-Zentrum Berlin (HZB) started with a bang. Katsumi Kushiya by the Japanese company Solar Frontier presented the approximately 100 participants a new world record conversion efficiency for thin-film-photovoltaic technologies. Their new thin-film CIGS cells can convert 20.9 percent of the incident sunlight into electrical energy beating the previous Solar Frontier- record of 19.7 percent conversion efficiency. The previous best value for all thin-film photovoltaic technologies was 20.8 percent. [...]

  • <p>Roel van de Krol, head of the HZB Institute for Solar Fuels, coordinates the global research project PECDEMO.Photo: P.Dera/HZB</p>NEWS      31.03.2014

    PECDEMO: sunlight to hydrogen

    Within just three years, research partners of the EU project PECDEMO are planning on developing a practical system capable of converting over eight percent of solar energy into hydrogen. This could prove a real breakthrough in terms of practical applicability. Roel van de Krol, head of the HZB Institute for Solar Fuels, coordinates this global research project. [...]

  • <p></p>
<p></p>NEWS      28.03.2014

    Nearly 100 girls visited HZB for Girls' Day

    Nearly 100 girls visited HZB for Girls' Day. Dr. Michael Tovar and Dr. Ulrike Witte, both from the school lab of HZB had organised 16 workshops for the girls, where they could meet female scientists, engineers and technicians and do hands-on science experiments. [...]

  • <p>The picture shows the characteristic spin texture (arrows) in a topological insulator (bottom) and how it is either probed by circularly polarized light (top) or manipulated by it (middle). </p>SCIENCE HIGHLIGHT      27.03.2014

    Controlling electron spins by light

    Researchers of HZB manipulate the electron spin at the surface of topological insulators systematically by light [...]

  • <p>12 Kinder und Jugendliche besichtigen die Betriebsfeuerwehr des Helmholtz-Zentrum Berlin / </p>NACHRICHT      20.03.2014

    Ausgerückt: Jugendfeuerwehr Berlin-Zehlendorf besucht Wache 4508

    Übungen gehören zum Pflichtprogramm der Jugendfeuerwehr Berlin-Zehlendorf. Doch am 17. März erwartete die Jugendlichen zunächst eine etwas längere Fahrt im Einsatzfahrzeug: Sie besuchten die Werksfeuerwehr am Helmholtz-Zentrum Berlin - oder wie es bei der Berliner Feuerwehr kurz heißt: die Wache 4508. Gegen 18.30 Uhr trafen 10 Jungen und 2 Mädchen an der Pforte ein, um die Besonderheiten der Betriebsfeuerwehr kennenzulernen. [...]

  • NEWS      19.03.2014

    The International Summer School Quantsol will inform on basics in photovoltaics and solar energy conversion

    Registration now open! For the seventh time already young solar energy researchers are invited to attend the International Summer School on Photovoltaics and New Concepts of Quantum Solar Energy Conversion (Quantsol). The school will be held from September 7th to 14th, 2014 in Hirschegg, Kleinwalsertal, Austria. The school is organized by the Helmholtz-Zentrum Berlin together with the Technical University of Ilmenau. Application can be submitted through the school’s homepage until June 1st, 2014. [...]

  • <p>The original structure of the material has an ABCABC arrangement of oxygen layers (left) &ndash; Due to the Li+H+ exchange during the charging process it degrades to ABBCCA (right).</p>NEWS      17.03.2014

    Why do Li-ion batteries age?

    Even the best Li-ion batteries degrade with time. A reason for this was now identified by researchers at HZB. They could directly observe at BESSY II and DORIS atomic rearrangements occurring in the cathode material of Li-ion batteries during charge and discharge processes. Such repetitive changes in atomic arrangements can lead to the breakdown of the crystal structure of a material and are the major causes of “ageing” of Li-ion batteries during cycling. [...]

  • <p>Kristalle in ihrer ganzen Sch&ouml;nheit, Form und Farbenvielfalt faszinieren die Gelehrten seit der Antike. Das Internationale Jahr der Kristallographie macht auf die erzielten Fortschritte in allen Lebensbereichen aufmerksam.</p>NACHRICHT      17.03.2014

    Kristalle in Wissenschaft und Technik: Ergebnisse auf der 22. Jahrestagung der Deutschen Gesellschaft für Kristallographie in Berlin

    Die Kristallographie hat enorm zum Fortschritt des 20. und 21. Jahrhundert beigetragen und ein grundlegendes Verständnis von Prozessen in vielen Lebensbereichen ermöglicht. Die Vielfalt der interdisziplinären Wissenschaft zu Struktur und Eigenschaften von Kristallen, ihrer Synthese und Anwendungsmöglichkeiten wird vom 17. bis 20. März 2014 bei der 22. Jahrestagung der Deutschen Gesellschaft für Kristallographie (DGK) in Berlin präsentiert. [...]

  • NEWS      17.03.2014

    Autumn School on Microstructural Characterization and Modelling of Thin Film Solar Cells

    From November 2 ‐ 7, 2014, an Autumn school is organised as part of the Helmholtz Virtual Institute  Microstructure Control for Thin‐Film Solar Cells [...]

  • <p>Foto: rbb/screenshot</p>NACHRICHT      13.03.2014

    Starfotograf Thomas Struth zeigt in seiner aktueller Ausstellung Fotos von BESSY II

    Nicht nur die Queen und zahlreiche andere Prominente hat Thomas Struth abgelichtet. Der Fotograf, der heute selbst als Star gefeiert wird, hat auch Bilder von BESSY II inszeniert. Dabei hat ihn die Frage geleitet, wie Orte aussehen, wo Menschen an der Zukunft arbeiten. Die neuen Aufnahmen von Thomas Struth sind noch bis zum 19. April in der Galerie Max Hetzler Berlin ausgestellt, darunter auch zwei Aufnahmen vom Elektronenspeicherring BESSY II. [...]

  • <p>Top ranking tertiary graduates are in demand (f.e. for the <a href="https://www.helmholtz-berlin.de/angebote/jobskarriere/promotion/index_en.html">MatSEC</a> graduate school.) Now graduates can apply for a grant to cover the &ldquo;pre-track&rdquo; period between their master&rsquo;s degree and acceptance into their doctoral programme.</p>NEWS      10.03.2014

    Gaining the best graduates – HZB supports the pre-track phase up to commencement of the PhD programme

    Top ranking tertiary graduates are in demand. As incentive to continue on to a PhD programme at HZB, HZB has made its conditions more attractive than ever. As of now, graduates can apply for a grant to cover the “pre-track” period between their master’s degree and acceptance into their doctoral programme. That gives them greater freedom to organize the formalities before commencing their doctorate. [...]

  • <p><em>ISU<sup>energy</sup></em> participants experimenting during a practical.</p>NEWS      06.03.2014

    International Summer University on Renewable Energies: Registration now open

    On behalf of the ISUenergy Scientific & Organising Committee it is a great pleasure to announce the 6th International Summer University on Renewable Energies and to invite your applications for this year's ISUenergy .The ISUenergy2014 will take place from Aug. 24th - Sept. 5th in Falera. [...]

  • <p>Prof. Dr. Roland Winter and award winner Dr. Sebastian Seiffert. Photo: GDCh.</p>NEWS      03.03.2014

    ADUC Prize for Sebastian Seiffert

    The Working Group of German University Chemistry Professors (ADUC/Arbeitsgemeinschaft Deutscher Universitätsprofessoren und –Professorinnen für Chemie) has awarded its 2013 prize for instructors completing their professorial credentials to Dr. habil. Sebastian Seiffert. Seiffert heads a group of junior scientists at the HZB Institute for Soft Matter and Functional Materials, as well as teaching at the Freie Universität Berlin as an adjunct professor. He will be assuming an associate professorship for supramolecular polymeric materials beginning in April that will be jointly financed by HZB and the Freie Universität Berlin. [...]

  • <p>The picture shows the characteristic spin texture (arrows) in a topological insulator and how it is manipulated by circularly polarized light.<em></em></p>NEWS      25.02.2014

    How to use light to manipulate the spin in topological insulators

    Researchers at HZB investigated the topological insulator bismuth selenide (Bi2Se3) by spin-resolved photoelectron spectroscopy at BESSY II. They found an astonishing difference depending on whether it is illuminated by circularly polarized light in the vacuum ultraviolet (50 electron volts, eV) and in the ultraviolet spectral range (6 eV). This result could help explaining how spin currents can be generated in topological insulators. [...]

  • NEWS      21.02.2014

    Helmholtz-Zentrum Berlin funds three-month stay abroad during PhD

    Anyone looking at a career in science will hear soon enough: Spending time abroad is extremely useful for international networking with peers. It is not always easy to go abroad within the three-year doctorate period. And, until now, it has been even harder to finance the desired stay abroad. Now there is a new programme that supports young researchers on their projects and makes doing a PhD at HZB much more attractive: the PhD Student Research Abroad. Up to five PhD students can befunded each year. The pilot project starts in March 2014. [...]

  • <p>A cluster tool for the research on new classes of materials and device structures for photovoltaic and photocatalysis applications. (Source: Altatech)</p>NEWS      21.02.2014

    A new cluster tool for EMIL

    The Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) and Altatech, a subsidiary of Soitec, have launched a collaborative partnership to research and develop materials for the next generation of high-efficiency solar cells, including new classes of materials and innovative device structures for photovoltaic and photocatalysis applications. [...]

  • <p></p>
<p></p>SCIENCE HIGHLIGHT      20.02.2014

    HZB-Zeitung "Lichtblick" erschienen

    Viele Menschen, die in einem Forschungszentrum arbeiten, bleiben unsichtbar. Sie sind Dienstleister für die Wissenschaftlerinnen und Wissenschaftler – oder machen, wie der Strahlenschutzexperte, Dr. Guido Buchert, das Forschen an den Großgeräten erst möglich. In dieser Ausgabe stellen wir seinen Berufsweg und sein höchst verantwortungsvolles Aufgabengebiet vor. [...]

  • NACHRICHT      19.02.2014

    Graffiti im Hörsaal: Die Künstler Gerrit Peters und Heiko Zahlmann gestalten Vortragsraum neu

    Ein leuchtendes Gelb, eine riesige Welle und starke Lichtpulse. Das Wandbild, das die Graffiti-Künstler von getting up, Gerrit Peters und Heiko Zahlmann, im Hörsaal am Standort Wannsee gemalt haben, ist eine Aufforderung zum Betrachten und Entdecken. In ihrem Entwurf haben die beiden Künstler Forschungsthemen aus dem HZB aufgegriffen und abstrahiert. [...]

  • <p>In the initial state (left), the voids' internal surfaces are saturated with hydrogen atoms so that no defects are observed. Light-induced charge carriers (h<sup>+</sup>) destabilize atomic bonds. The breaking of atomic bonds causes defects (indicated by the vertical arrows on the right hand side), which translates to reduced solar cell efficiency.</p>NEWS      13.02.2014

    Light-induced degradation in amorphous silicon thin film solar cells

    Researchers at the Helmholtz Center Berlin (HZB) have taken a leap forward towards a deeper understanding of an undesired effect in thin film solar cells based on amorphous silicon – one that has puzzled the scientific community for the last 40 years. The researchers were able to demonstrate that tiny voids within the silicon network are partly responsible for reducing solar cell efficiency by some 10 to 15 percent as soon as you start using them. Their work has now been published in Physical Review Letters (DOI: 10.1103/PhysRevLett.112.066403). [...]

  • NACHRICHT      07.02.2014

    Am 13. Februar 2014 treten drei Nachwuchsforscher beim Dissertationspreis Adlershof gegeneinander an

    Auch in diesem Jahr ist für den Dissertationspreis Adlershof eine Nachwuchsforscherin nominiert, die am Helmholtz-Zentrum Berlin promoviert hat. Dr. Nicole Welsch untersuchte bei Prof. Dr. Matthias Ballauf (HZB), wie Proteine auf neutralen sowie geladenen, kolloidalen Mikrogelen adsorbiert werden. Seit 2002 wird der Dissertationspreis Adlershof jährlich von der Humboldt-Universität zu Berlin, der Initiativgemeinschaft Außeruniversitärer Forschungseinrichtungen in Adlershof e.V. (IGAFA) und der WISTA-MANAGEMENT GMBH verliehen. [...]

  • <p>Eine 30-k&ouml;pfige Delegation besuchte im Rahmen des Deutsch-T&uuml;rkischen Wissenschaftsjahres BESSY II und weitere Forschungseinrichtungen in Adlershof.</p>NACHRICHT      30.01.2014

    Türkischer Minister für Wissenschaft besuchte Adlershof und BESSY II

    Der türkische Wissenschaftsminister Fikri Isik war in Berlin eingeflogen, um gemeinsam mit der Bundesforschungsministerin Johanna Wanka, am 23. Januar das deutsch-türkische Wissenschaftsjahr 2014 feierlich zu eröffnen. Im Rahmen seines Besuchs besichtigte eine 30-köpfige Delegation um Fikri Isik Forschungseinrichtungen in Adlershof und machte dabei auch an BESSY II Station.  [...]

  • NEWS      30.01.2014

    #HZBzlog – the new series highlight – is now online. Don’t miss an episode!

    Television is not the only source for exciting stories told episode by episode. The Internet is suited more than ever. The first project of this kind is not a thriller or your daily soap opera, but comes instead from the world of science. Presented in HZB Future Logbook (#HZBzlog) that was broadcast today at 2:00 p.m. [...]

  • NEWS      29.01.2014

    The HZB online presence got a new look

    The HZB’s online presence just got a new look. But it isn’t only the design that has been completely reworked – the new site also offers a host of exciting new features. For one, the site is now mobile-optimized. Also, we have made a real effort to improve site navigation: research sites have been broken down by topic to afford users a much improved quick look topics overview. Movies, images, and podcasts about our research can be accessed via the new media library. We hope you will enjoy surfing our new website as much as we’ve enjoyed creating it! [...]

  • NEWS      27.01.2014

    Magnetic switch gets closer to application

    Scientists from Paris, Newcastle and Helmholtz-Zentrum Berlin have been able to switch on and off robust ferromagnetism close to room temperature by using low electric fields. Their results are inspiring for future applications in low-power spintronics, for instance in fast, efficient and nonvolatile data storage technologies. [...]

  • <p><span><span>Despite the onset of winter, the High-Field Magnet arrived in Berlin without difficulty. The magnet will be connected to the cooling facility, power supply, and the neutron guide over the next months. Photo: </span><span>HZB/Phil Dera</span></span></p>NEWS      23.01.2014

    High-Field Magnet crossed the finish line at Helmholtz-Zentrum Berlin

    The High-Field Magnet (HFM) for diffracting neutrons entered the gates of the Helmholtz-Zentrum Berlin in Wannsee on 23 January 2014 at 9am, where the project team headed by Dr. Peter Smeibidl enthusiastically accepted delivery. The journey for the roughly 20-tonne scientific device began in the Italian city of Chivasso near Turin two days prior on 21 January. It traversed its 1200 kilometre route without incident, which led through Milan, the Gotthard Tunnel, Zürich, and Stuttgart to Berlin. [...]

  • <p>The transformation from a layer of closely packed nanorods (top left) to a polycrystalline semiconductor thin film (top right) can be observed in by in-situ X-ray diffraction in real time. The intensities of the diffraction signals are color coded in the image at the bottom. A detailed analysis of the signals reveals that the transformation of the nanorods into kesterite crystals takes only 9 to 18 seconds.</p>
<p></p>NEWS      22.01.2014

    From a carpet of nanorods to a thin film solar cell absorber within a few seconds

    Research teams at the HZB and at the University of Limerick, Ireland, have discovered a novel solid state reaction which lets kesterite grains grow within a few seconds and at relatively low temperatures. For this reaction they exploit a transition from a metastable wurtzite compound in the form of nanorods to the more stable kesterite compound. At the EDDI Beamline at BESSY II, the scientists could observe this process in real-time when heating the sample: in a few seconds Kesterite grains formed. The size of the grains was found to depend on the heating rate. With fast heating they succeeded in producing a Kesterite thin film with near micrometer-sized crystal grains, which could be used in thin film solar cells. These findings have now been published in the journal “Nature Communications”. [...]

  • <p><span>Scanning electron microscopy of a Perovskite-solar cell: on a glass substrate (glass and FTO) highly porous titanium dioxide is deposited, which is impregnated with perovskite. This film is covered by an organic hole transporting material (HTM) and gold contact. </span></p>NEWS      21.01.2014

    Understanding a new type of solar cell

    Perovskite based solar cells are a hot topic in energy research and Science Magazine has put it on the list of Breakthroughs in 2013. In only a few years their efficiency has increased from 3 % to more than 16 %. However, a detailed explanation of the mechanisms of operation within this photovoltaic system is still lacking.  Scientists from Ecole polytechnique fédérale in Lausanne (EPFL) and of HZB-Institute for Solar Fuels have now uncovered the mechanism by which these novel light-absorbing semiconductors transfer electrons along their surface. They examined perovskite based solar cells with different architectures with time resolved spectroscopy techniques. Their results, which are now published online in Nature photonics, open the way to the design of photovoltaic converters with improved efficiency. [...]

  • <p>The image shows the three-dimensional reconstruction of an atom probe measurement. The &gamma; matrix (purple) can be seen surrounding the cuboidal &gamma;&rsquo; precipitates (green). Only a few nanometre-sized &gamma; platelets can be seen in the &gamma;&rsquo; precipitates. Atom probe tomography allows a site specific analysis of the structure at the atomic scale and reveals the chemical composition in measurements of individual areas. </p>SCIENCE HIGHLIGHT      14.01.2014

    What makes superalloys super - hierarchical microstructure of a superalloy

    Researchers have observed for the first time in detail how a hierarchical microstructure develops during heat treatment of a superalloy [...]

  • <p>The outline of the lizard serves as a test object, as well as the conventional test pattern, a section of a so called Siemens star. The lizard&rsquo;s tail and the converging rays of the Siemens star can be used to measure how well narrow lines will be reproduced in an image. With a diameter of six thousandths of a millimetre, the entire test object is about the size of a red blood cell. The smallest resolved structure has a width of 46 nanometres. </p>SCIENCE HIGHLIGHT      07.01.2014

    New holographic process uses image-stabilised X-ray camera

    A team headed by Stefan Eisebitt has developed a new X-ray holography method that will enable snap-shots of dynamic processes at highest spatial resolution. The efficiency of the new method is based on a X-ray focussing optics being firmly fixed to the object to be imaged. While this approach initially provides a blurry image, this can be focussed in the computer based on the hologram information. At the same time, the rigid connection between the object and the focussing optics elegantly solves the problem of vibration induced jitter that plays an enormous role at the nanometre scale. [...]

  • <p>Stripe order of charge carriers in Bi<sub>2</sub>Sr<sub>2</sub>CaCu<sub>2</sub>O<sub>8+x</sub> [2]. The figure shows the structure with a period of approximately one nanometer (front) and the related diffraction pattern (back) obtained by a so-called Fourier transformation (Yazdani Lab, Princeton University).</p>SCIENCE HIGHLIGHT      19.12.2013

    Charge Order competes with superconductivity

    Today in Science Express: Charge carriers in cuprate high-Tc superconductors form nanostripes that suppress superconductivity, as shown by guest researchers from Princeton and Vancouver using synchrotron radiation at BESSY II [...]

  • Lise Meitner, Willy Brandt und Otto Hahn bei der Gründung des Hahn-Meitner-Instituts am 14. März 1959. NACHRICHT      18.12.2013

    75 Jahre Kernspaltung

    Am 17. Dezember 1938, also vor 75 Jahren, haben Otto Hahn und Fritz Straßmann die Kernspaltung entdeckt. Ihre Kollegin Lise Meitner, von den Nationalsozialisten ins Exil gezwungen, steuerte aus Schweden die entscheidende Interpretation bei: Die Experimente zeigten, so Meitner, dass Atome spaltbar sein können. Zum Jubiläum hat die Freie Universität Berlin gestern eine Gedenkveranstaltung abgehalten, mit Vorträgen und einem Nachbau des Experimentiertisches, den das Helmholtz-Zentrum Berlin für diesen Zweck an die FU ausgeliehen hat. [...]

  • A chalcopyrite thin film solar cell is normally made up of five layers (left). HZB-scientists have managed to reduce the number of steps of production and uniting the functionalities of two layers into one single layer which does not contain cadmium. Grafic: R. Klenk/HZBNEWS      18.12.2013

    HZB team develops chalcopyrite solar cells without cadmium-based buffer layer

    A single layer takes on the job of what used to be two layers, doing away with the wet chemical process. Despite a much simplified production method, efficiencies of greater than 18 percent are well within reach. [...]

  • In einem iterativen Prozess werden die ARPES-Messungen mit einem Algortihmus zu Wellenfunktionen verrechnet und erneut interpretiert. NACHRICHT      17.12.2013

    Die Vermessung von Molekülen: Physiker der Uni Graz spüren Elektronenzustände auf

    Seit der Formulierung der Quantenphysik vor gut hundert Jahren träumen Wissenschaftlerinnen und Wissenschaftler davon, die quantenmechanischen Orbitale von Elektronen in Atomen, Molekülen und Festkörpern zu messen. Denn diese Orbitale bestimmen die chemischen und physikalischen Eigenschaften des Materials. Zwei Arbeitsgruppen um Ass.-Prof. Dr. Peter Puschnig und Ao.Univ.-Prof. Dr. Michael Ramsey am Institut für Physik an der Karl-Franzens-Universität Graz ist es nun gelungen, Elektronenorbitale von Kohlenwasserstoff-Molekülen auf einem Silbersubstrat sichtbar zu machen, indem sie Messungen an BESSY II  mit ab inititio-Berechnungen  kombiniert haben. Auch KollegInnen des deutschen „Forschungszentrums Jülich“ sind an der Arbeit beteiligt, die nun in der aktuellen Ausgabe der „Proceedings of the National Academy of Sciences (PNAS)“ publiziert worden ist. [...]

  • <p>Prize winners Dr. Karine dos Santos (left) and Dr. Katharina Diller together with Prof. Mathias Richter of the Friends of HZB. </p>NEWS      16.12.2013

    Research at HZB facilities - packed in three days

    500 scientists gathered and shared information at the HZB User Meeting from 4 to 6 December 2013 [...]

  • <p>Participants of the HERCULES kickoff meeting on 21-22 November 2013 at Institut National d&rsquo;Energie Solaire (INES) in Le Bourget du Lac near Chamb&eacute;ry, France.</p>NEWS      10.12.2013

    HERCULES has started: European collaboration will pave the way to the next generation of c-Si based solar cell devices with efficiencies of 25 %

    Sixteen leading European research institutes, universities and partners from industry have joined forces in order to collaborate closely on the development of next generation of crystalline silicon based solar cells and modules. Together they proposed a concept of “High Efficiency Rear Contact solar cells and Ultra powerful moduLES” with the acronym HERCULES and received a 7 million Euro grant from the European Commission within the 7th Research Framework Programme. The project has started the 1st  of November 2013 and will finish end 2016. [...]

  • NEWS      09.12.2013

    Producing high performance solar cells at lower cost

    Dr. Sebastian Brückner graduates “summa cum laude” on solar cells made from III-V semiconductors [...]

  • NEWS      09.12.2013

    Today: "HZB Distinguished Lectures": Prof. Joachim Stöhr will give a talk

    We would like to draw your attention to the "HZB Distinguished Lectures" and invite you to this. Prof. Joachim Stöhr from SLAC National Accelerator Laboratory and Stanford University will present on 9th December 2013 his thoughts on "The Light Fantastic: Birth of the X-Ray Laser and a New Era of Science". The presentation will be given at the lecture hall of the Wilhem-Conrad-Röntgen-Campus of HZB at 2 pm. After Prof. Stöhr’s presentation we have a get-together and time for informal discussion with "Glühwein" in the BESSY foyer. [...]

  • NEWS      04.12.2013

    Martina Schmid is Junior Professor at Freie Universität Berlin

    The head of the Helmholtz junior group “Nano-Optical Concepts for Photovoltaics” (NanooptiX) at HZB, Dr. Martina Schmid, was appointed as junior professor at Freie Universität Berlin (FU) on 2 December 2013. Alongside her research at HZB, she will be teaching physics at FU. [...]

  • Successful during Helmholtz-Postdoc-Programme: Dr. Daniel Schick und Dr. Katja Höflich. NEWS      04.12.2013

    Two new postdocs at HZB receive Helmholtz funding

    Dr. Daniel Schick and Dr. Katja Höflich have achieved success in the Helmholtz postdoctoral programme. They will each be receiving “starting capital” of 300,000 EUR for the next three years in order to further establish themselves in their research field. [...]

  • NEWS      04.12.2013

    Recognition for Research on Smart Microgel Particles: Chemist Dr. Sebastian Seiffert Recipient of Reimund Stadler Award

    The chemist Dr. Sebastian Seiffert has been chosen to receive the prestigious Reimund Stadler Award for his work in polymer science. Seiffert does research at Freie Universität and the Helmholtz-Zentrum Berlin on “smart” microgel particles. The selection board on behalf of the German Chemical Society (Gesellschaft Deutscher Chemiker, GDCh) recognized Seiffert’s achievements in this field of research and also praised the interdisciplinary synergy between the university and the Helmholtz Center. The award has a monetary value of 2500 euros and will be presented in the fall of 2014. The recipient is expected to write trend reports for the GDCh on developments in the field of macromolecular chemistry for two years. [...]

  • <p>Steve Cramer is looking forward to collaborate with the Berlin Team at HZB and FU.</p>NEWS      03.12.2013

    Humboldt Research Award brings Stephen P. Cramer to Berlin

    The renowned synchrotron spectroscopy expert Professor Stephen P. Cramer has received a Humboldt Research Award and may now spend up to one year cooperating closely with a team at Helmholtz-Zentrum Berlin (HZB) and Freie Universität Berlin. Cramer was nominated by Professor Emad Aziz, who heads a Joint Lab for “Ultrafast Dynamics in Solution and at Interfaces” at HZB and Freie Universität. Cramer is Advanced Light Source Professor at University of California, Davis, and at the Lawrence Berkeley National Laboratory. [...]

  • This photo shows to the right Markus Scholz with the president of the examination committee, Prof. Matias Bargheer, after the successful defense. NEWS      02.12.2013

    Markus Scholz received Ph. D. with "summa cum laude"

    These materials are insulators which display metallic conductivity at their surface. The topological aspects lead to a protection of the metallic states towards distortions of the system and permit, in principle, a dissipationless transport of current. Hence, topological insulators play a prominent role in approaches for realizing a "green" information technology.
    The spectroscopic methods available at BESSY II are very well suited for studying these conducting states, in particular spin-resolving spectroscopies and circular dichroism, a key activity of the group. Prior to Markus Scholz' investigations, it had been believed that the presence of magnetic moments, which break time-reversal symmetry, destroy the topological surface state at its point of degeneracy (Dirac point), i. e., forms a band gap there. This was disproved by Markus Scholz' careful experimental work. He demonstrated the robustness of the surface states and how their lifetime broadening is influence by the magnetic moments.  [...]

  • NEWS      27.11.2013

    HZB part of new metal oxide/water systems CRC

    A team of HZB researchers is part of the new collaborative research center, "Molecular insights into metal oxide/water systems" funded by the German Research Association. As part of this CRC, Dr. Bernd Winter of Prof. Dr. Emad Aziz's junior research group will be studying metal ions and metal oxide complexes in aqueous solution at BESSY II. [...]

  • High-Tech-Bau neben High-Tech-Bau: Das „Energy Materials In-Situ Laboratory Berlin“ (EMIL) entsteht als Anbau neben der Synchrotronlichtquelle BESSY II des HZB. Foto: HZBNACHRICHT      26.11.2013

    Anbau an BESSY II im Rekordtempo: EMIL hat jetzt ein Dach über dem Kopf

    Das Forschungsgebäude für das neue Labor EMIL an BESSY II nimmt Form an: Am Mittwoch, 4. Dezember 2013, ab 13 Uhr feiert das „Energy Materials In-Situ Laboratory Berlin“ Richtfest. Die Zeremonie findet auf dem Wilhelm Conrad Röntgen Campus des Helmholtz-Zentrum Berlin, Albert-Einsteinstraße 15, 12489 Berlin, statt. Vertreter der Medien sind herzlich eingeladen. [...]

  • <p>Der kaufm&auml;nnische Gesch&auml;ftsf&uuml;hrer Thomas Frederking gratulierte Karsten Harbauer zu seinem Patent.</p>NACHRICHT      22.11.2013

    Geschäftsführung übergab Patenturkunden an Erfinderinnen und Erfinder aus dem HZB

    Um ein Problem zu lösen, müssen Menschen in der Forschung oft unbeschrittene Wege gehen. Ist die Lösung dann tatsächlich neu und nicht aus dem vorhandenen Stand der Technik abzuleiten, kann aus der Erfindung noch mehr entstehen: ein Patent. Jedes Erfinderteam des HZB erhält bei der ersten Erteilung eines Patents für seine Erfindung 1.000 Euro. Thomas Frederking, kaufmännischer GF am HZB, überreichte im August bei einer feierlichen Runde Patenturkunden an Erfinderinnen und Erfinder aus dem HZB, deren Patente zwischen Juli 2012 und Juli 2013 erstmalig erteilt wurden. Wir geben Ihnen hier einen Überblick über die Patente der HZB-Mitarbeiterinnen und Mitarbeiter und stellen die Patentschriften in der rechten Box zum Download zur Verfügung. [...]

  • SCIENCE HIGHLIGHT      13.11.2013

    HZB-Zeitung "lichtblick" erschienen

    In der aktuellen Ausgabe der Lichtblick stellen wir Ihnen Mitarbeiterinnen und Mitarbeiter aus dem HZB vor. Jessica Neumann leitet das Rechnungs- und Finanzwesen und stellt sicher, dass das HZB immer genug Geld auf dem Konto hat - eine herausfordernde Aufgabe, die Fingerspitzengefühl und Kommunikationsstärke erfordert. [...]

  • Prof. Hans-Werner Schock (3.f.l.) receives the honorary doctorate at University  of Tallinn.NEWS      08.11.2013

    Honorary doctorate for Prof. Hans-Werner Schock

    Tallinn University of Technology (TTU) has named Prof. Hans-Werner Schock recipient of an honorary doctorate in recognition of Schock’s achievements during TTU’s integration into the Western research community after the 1990 fall of the Iron Curtain. [...]

  • A key feature of the active site of the trypanosomal thiolase is the HDCF-loop (HIS-ASP-CYS-PHE), visualised in light blue.
NEWS      07.11.2013

    Blocking the active site of thiolase

    Scientists at the University of Oulu, Finland, and at the HZB break new ground for drug discovery research in the fight against sleeping sickness [...]

  • The new cavities during their installation. NEWS      25.10.2013

    New cavities successfully installed

    At the heart of BESSY II are four cavities, hollow resonators, providing the energy that electrons in the storage ring re-absorb after they have released it as light packets. The old cavities were still from the 1970s and were employed at DESY in Hamburg, then at BESSY I, and finally at BESSY II beginning in 1998. “However, the limit of their operating life has been reached”, says Dr. Wolfgang Anders from the HZB Institute of SRF – Science and Technology. Anders, an expert in the field, was responsible for replacing two of the four old cavities with new units during the summer shutdown. [...]

  • <p>W&auml;hrend der Einf&uuml;hrungswoche f&uuml;r das Helmholtz Virtuelle Institut "Microstructure Control for Thin-Film Solar Cells" (MiCo) konnte sich der wissenschaftliche Nachwuchs mit den Materialsystemen, Charakterisierungstechniken und Modellierungsmethoden der D&uuml;nnschicht-Photovoltaik vertraut machen. Foto: D. Abou-Ras</p>NACHRICHT      24.10.2013

    Gut vorbereitet in die Forschung im Verbund

    Helmholtz Virtuelles Institut "Microstructure Control for Thin-Film Solar Cells" (MiCo) organisiert Einführungswoche für alle Partner [...]

  • Prof. Susann Schorr with participants of Graduate School MatSECNEWS      22.10.2013

    New Materials for Photovoltaics: HZB starting its first own Graduate School

    Well-structured Ph.D. program [...]

  • the 7-Tesla Multipole Wiggler: after one year working on it, the wiggler came back from Novosibirsk as planned but had to be removed from the storage ring again. The reason for highly elevated operating temperatures are investigated.NEWS      21.10.2013

    Resumption of full scientific operation at BESSY II delayed

    While the lengthy summer shutdown with its comprehensive updating and maintenance work has been completed as planned, there have been some unforeseeable disruptions that will delay the resumption of regular Top-Up operations at present. The scientific operating time for users which was unavailable in October will be made up at the beginning of 2014. [...]

  • <p>Participants and mentors of this year&rsquo;s Neutron Summer School.</p>NEWS      20.10.2013

    Neutron Summer School for the study of hydrogen storage materials

    An international group of students and scientists recently completed Margarita Russina’s second ever Neutron Summer School program. Just like last year, the Summer School took place in mid-September on the HZB’s Wannsee campus, offering participants a week filled with a broad spectrum of classes and activities, all on the topic of neutron scattering methods in the study of hydrogen storage materials. [...]

  • <p>Dr. Manuela Klaus and Prof. Dr. Christoph Genzel won the Technolgy-Transfer-Prize for developing a new cutting tool. </p>NEWS      18.10.2013

    Technology Transfer Prize for development of an optimised cutting tool

    Dr. Manuela Klaus and Prof. Dr. Christoph Genzel have won the HZB Technology Transfer Prize awarded 17 October 2013. In collaboration with the Walter Company, they developed a new method for analysing and establishing the relationship between the structure and the properties of cutting tools having complicated coatings. They used synchrotron radiation for this purpose created in the electron storage ring of BESSY II. As a result of the insight gained, a production series of cutting tools having outstanding wear properties far superior to competing products was able to be patented and successfully introduced into the market. [...]

  • Zwei der vier alten Kavitäten wurden durch neue Kavitäten ausgetauscht. Foto: C.Jung/HZBNACHRICHT      18.10.2013

    Wiederaufnahme des Messbetriebs nach Sommershutdown:

    Seit Anfang der Woche läuft der Messbetrieb am Berliner Elektronenspeicherring BESSY II wieder. Damit ist der planmäßige neunwöchige Sommer-Shutdown 2013 beendet. Er stand in diesem Jahr unter besonderer Aufmerksamkeit, denn an BESSY II wird das große EMIL-Labor für die Solar- und Katalyseforschung angedockt. [...]

  • <p>Julia-Marie Vogt receives the prize for the best presentation at the 16th International Conference on Radio Frequency Superconductivity in Paris.</p>NEWS      17.10.2013

    Slow, even cooling reduces losses in superconducting cavities

    Julia-Marie Vogt receives award for the best conference lecture by a junior scientist at the 16th International Conference on Radio Frequency Superconductivity. [...]

  • NACHRICHT      11.10.2013

    Festsymposium zur 1000. Proteinstruktur an BESSY II

    Im Juli 2013 wurde die 1000. Proteinstruktur veröffentlicht, die auf bei BESSY II gemessenen Daten beruht. Aus diesem Anlass lädt das HZB am Mittwoch, den 16.10.2013, zu einem Festsymposium ein. [...]

  • NEWS      10.10.2013

    High field magnet for neutron scattering has made its way to Italy

    After five years of manufacture, the superconducting spool for the new high field magnet for neutron scattering finally took off from Atlanta, USA, inside the belly of an MD-11F Lufthansa cargo plane on October 9, 2013, at 3:00 am EST. The plane landed in the cargo area at Frankfurt Airport promptly at 6:21 pm that same day. Following German customs clearance, the magnet was subsequently transferred to Italy by truck where, on Friday, October 11, it arrived in Chivasso/Turin. [...]

  • <p>Scientists will discuss the novel approach "BESSY VSR" to create long and short photon pulses simultaneously for all beam lines in the Storage Ring BESSY II.</p>NEWS      08.10.2013

    Workshop BESSY VSR

    On October 14-15, 2013 the BESSY VSR - Workshop "The Variable pulse length Synchrotron Radiation source" will be held at the Wilhelm-Conrad Röntgen Campus of the HZB in the lecture hall of BESSY II. We would kindly like to invite you to take part and discuss the unique science possibilities that BESSY VSR can provide.  [...]

  • Graphene was deposited onto a glass substrate. The ultrathin layer is but one atomic layer thick (0.3 Angström, or 0.03 nanometers), although charge carriers are able to move about freely within this layer. This property is retained even if the graphene layer is covered with amorphous or polycrystalline silicon. 

NEWS      08.10.2013

    Major leap towards graphene for solar cells

    Surprising result: Graphen retains its properties even when coated with silicon [...]

  • Scientists from all over the world discussed the challanges of messuring the dynamic processes in different materials with X-rays.NEWS      08.10.2013

    At an international conference in Berlin, researchers were discussing options for using X-rays to take time-resolved measurements

    The Helmholtz Virtual Institute “Dynamic pathways in multidimensional landscapes” is striving for a holistic view of material properties [...]

  • NACHRICHT      02.10.2013

    Sommeruniversität für Erneuerbare Energien

    52 junge Leute aus aller Welt haben sich vom 25. August bis 6. September mit den vielseitigen Aspekten Erneuerbarer Energien beschäftigt [...]

  • NACHRICHT      25.09.2013

    Türen auf für Kinder am 3. Oktober: Maustag an BESSY II

    Am Donnerstag, den 3.10.2013 findet in Deutschland wieder der große „Maus-Tag“ statt, an dem speziell solche Einrichtungen ihre Türen öffnen, die normalerweise für Kinder nicht zugänglich sind. Auch das HZB macht mit und lädt Kinder ab 4 Jahren in die große Experimentierhalle des Berliner Elektronen-Speicherrings BESSY II ein. [...]

  • <p>Die Sommerstudenten vom HZB auf Erkundungstour durch Berlin</p>NACHRICHT      25.09.2013

    24 Sommerstudenten aus aller Welt zu Gast am HZB

    HZB bietet seit 25 Jahren Sommerstudentenprogramm für Nachwuchswissenschaftler an [...]

  • <p>World record solar cell with 44.7% efficiency, made up of four solar subcells based on III-V compound semiconductors for use in concentrator photovoltaics. &copy;Fraunhofer ISE</p>NEWS      24.09.2013

    World Record Solar Cell with 44.7% Efficiency

    With a solar cell efficiency of 44.7%, scientists around Dr. Frank Dimroth at the Fraunhofer Institute for Solar Energy Systems ISE achieved a new world record for the conversion of sunlight into electricity. They used a new solar cell structure with four solar subcells, a new procedure called wafer bonding and optical components which concentrate the sunlight (Concentrated Photovoltaics CPV). Part of the cell structure was developed at the Helmholtz Zentrum Berlin in the research group of Prof. Thomas Hannappel, (now with Technical University Ilmenau). They developed methods to prepare critical interfaces and to avoid undesirable defects. SOITEC and CEA-Leti have as well contributed to this world record. [...]

  • Structure of the sugar molecule bound by the enzyme transketolase immediately prior to its being splitNEWS      12.09.2013

    Göttingen scientists use BESSY II to decode basic mechanism underlying biochemical reactions

    Enzymes are life’s molecular catalysts and figure prominently in cellular metabolism. It has been speculated that in the course of a biochemical reaction enzymes physically bend their substrates to split them. Now for the first time ever, scientists at the Göttingen Center for Molecular Biosciences (GZMB) have successfully used BESSY II's MX beamline to unequivocally confirm this hypothesis. The results from this study have been published in the renowned scientific journal Nature Chemistry. [...]

  • A scanning electron micrograph of a w=500&#8201;nm wide and 30&#8201;nm thick permalloy ring with radius r=2&#8201;&#956;m overlayed with a scanning transmission X-ray microscopy (STXM) image showing the in-plane magnetic contrast. NEWS      11.09.2013

    Domain walls as new information storage

    Domain wall motion imaging: at high speeds, material defects no longer play a role [...]

  • NACHRICHT      11.09.2013

    Wettbewerbsbeiträge für den HZB-Technologietransfer-Preis zu besichtigen: Am 12. September 2013 wird die Ausstellung in Wannsee eröffnet

    Für herausragende Leistungen auf dem Gebiet des Technologietransfers verleiht das HZB am 17. Oktober 2013 zum sechsten Mal den HZB-Technologietransfer-Preis. Er ist mit einem Preisgeld von 5.000 Euro dotiert. Im Vorfeld der Preisverleihung werden die eingereichten Projekte an beiden HZB-Standorten präsentiert. Thomas Frederking, kaufmännischer Geschäftsführer des HZB, wird am 12. September um 10 Uhr die Ausstellung im Hörsaalfoyer in Wannsee eröffnen. Sie sind herzlich eingeladen, einen Einblick in die Wettbewerbsbeiträge zu nehmen. Im Anschluss wird es einen Imbiss mit Getränken geben. [...]

  • SCIENCE HIGHLIGHT      06.09.2013

    Now available: Highlights 2012 - the annual report with reseach highlights at HZB

    The Annual Report with research highlights is now available und could be downloaded. [...]

  • NACHRICHT      03.09.2013

    Voting für HZB-Videos

    Beim Video-Wettbewerb Fast Forward Science 2013 sind zwei HZB-Videos im Rennen - Bitte voten und kommentieren [...]

  • <p>Prof. Dr. Harry Tuller, MIT, was a guest-scientist at the institute for solar fuels.</p>NEWS      29.08.2013

    Interview with MIT-Expert Harry Tuller

    When can we hope to store solar energy in form of hydrogen with an efficient and cheap solution? What is motivating young people to get involved into science these days? And how does is come that many scientists really love to work, even after the official retirement age? Prof. Dr. Harry Tuller ist answering these questions in an interview, which you can listen here. And if you prefer to read his answers, you could download the transcript. [...]

  • <p>Susan Schorr wird portr&auml;tiert.</p>SCIENCE HIGHLIGHT      23.08.2013

    Neue "lichtblick" erschienen

    Großes Interview mit der Geschäftsführung zur Zukunft des HZB [...]

  • This sketch demonstrates the principle of measurement which enables to address  atom-specific and state-dependent emission of photons. With the help of first principles theory the spectral features can be associated with molecular orbitals. SCIENCE HIGHLIGHT      21.08.2013

    Better insight into molecular interactions

    How exactly atoms and molecules in biochemical solutions or at solid-liquid interfaces do interact, is a question of great importance. Answers will provide insights at processes in catalysts, smart functional materials and even physiological processes in the body, which are essential for health. Until now, scientists could have a look at these interactions by methods of spectroscopy, but it was hard to distinguish the many different interactions, which take place simultaneously. [...]

  • <p>Researchers have documented how inelastic scattering can intelligently intensified so that a shift of frequency is observed.<br />&copy;HZB/E. Strickert</p>SCIENCE HIGHLIGHT      21.08.2013

    Researchers from HZB open a door for solid state physics

    Laser processes observed with X-rays on a solid [...]

  • Prof. Dr. Jürgen Mlynek, Katja Hessel, Dr. Wolfgang Heubisch, Joachim Herrmann, Prof. Dr. Johanna Wanka, Prof. Dr. Karl-Dieter Grüske, Prof. Dr. Harald Bolt, Prof. Dr. Achim Bachem, und Thomas FrederkingNACHRICHT      20.08.2013

    Kooperationsvertrag für Helmholtz-Institut Erlangen-Nürnberg unterzeichnet

    Die Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), das Forschungszentrum Jülich und das Helmholtz-Zentrum Berlin (HZB) gründen gemeinsam das Helmholtz-Institut Erlangen-Nürnberg für Erneuerbare Energien (HI ERN). In Anwesenheit von Bundesforschungsministerin Prof. Dr. Johanna Wanka ist heute in Nürnberg der Kooperationsvertrag zwischen den drei Partnern unterzeichnet worden. Die Helmholtz-Gemeinschaft fördert das neue Institut mit jährlich 5,5 Millionen Euro. [...]

  • <p>Prof. Dr. Alan Tennant.</p>NEWS      16.08.2013

    Prof. Dr. Alan Tennant has accepted a new position

    Prof. Dr. Alan Tennant has been selected as the new Chief Scientist for the Neutron Sciences Directorate, at Oak Ridge National Laboratory. He will start in his new capacity there in November 2013. “We are proud to have had Alan Tennant working with us for these last nine years”, says Professor Anke Kaysser-Pyzalla, scientific director of the Helmholtz-Zentrum Berlin (HZB). [...]

  • <p>Polymer chain incorporation during formation of ideal PE-nanocrystals by catalytic insertion polymerization with a water-soluble Ni(II) catalyst. The amorphous layers covering both platelets act as the wheels of a pulley just changing the direction of the chains. A moderate raise of the temperature induces sufficient mobility that allows the chains to move within the crystal.</p>SCIENCE HIGHLIGHT      14.08.2013

    Ideal nanocrystal produced from bulk plastics

    Polyethylene is an inexpensive commodity plastic found in many household objects. Now, a consortium of researchers from Constance, Bayreuth, and Berlin has successfully used this plastic to synthesize the ideal polymer nanocrystal. The prerequisite was a new type of catalyst produced by Constance University researchers as well as a combination of unique analytic tools like those found at the Helmholtz Zentrum Berlin (HZB). The crystalline nanostructure, which gives the polymer its new properties, could prove of interest to production of new kinds of coatings. The scientists’ findings are being published in the Journal of the American Chemical Society’s current issue (DOI: 10.1021/ja4052334). [...]

  • Dr. Anup Kumar Bera from the department of Quantum Phenomena in Novel Materials convinced the committee with his poster about  ‘Haldane chains’.  NEWS      14.08.2013

    International Conference in Neutron Scattering: HZB-contributions awarded

    More than 800 participants had gathered for the International Conference in Neutron Scattering, held during 8-12 July 2013 in Edinburgh, to discuss advances in neutron research and the advancement of the neutron scattering instruments and techniques. A committee selected sixteen outstanding posters from the 650 poster presentations, two of these from HZB scientists. [...]

  • NACHRICHT      09.08.2013

    HZB-Forscher stellen Zukunftsprojekte für BESSY II vor

    „Synchrotron Radiation News“ zu Neuen Trends in der Beschleunigertechnologie enthält Beiträge zu BESSYVSR und BERLinPro [...]

  • As part of her doctoral work, Dr. Melanie Timpel was able to show just how strontium is able to refine modern-day lightweight alloys.
SCIENCE HIGHLIGHT      08.08.2013

    Melanie Timpel receives Acta Student Award

    Dr. Melanie Timpel's submission to the journal Acta Materialia made her one of this year's recipients of the 2,000 dollar 2012 Acta Materialia Student Award. The award is considered a high distinction conferred upon up-and-coming scientists. The award ceremony is scheduled for October 28, 2013, as part of the Materials Science & Technology Conference (MS&T) in Montreal, Canada. [...]

  • Burial of the time capsule was part of the groundbreaking ceremony. Seen here are Klaus Lips, Anke Kaysser-Pyzalla, Birgit Schröder-Smeibidl, Markus Hammes, Bernd Rech, Axel Knop-Gericke (CAT project leader of the MPG's Fritz Haber Institute) and Thomas Frederking. Photo: Andreas Kubatzki/HZB
NEWS      06.08.2013

    Groundbreaking for EMIL

    On Monday, August 5, 2013, a festive groundbreaking ceremony was the official  signal for the start of construction of the new BESSY II research lab EMIL. The new cutting-edge solar energy and catalysis research preparation and analysis lab "Energy Materials In-Situ Laboratory Berlin" will be a direct BESSY II add-on. The joint project by the HZB and the Max Planck Society provides a one-of-a-kind infrastructure for the interdisciplinary and industry compatible development of new materials and technologies to facilitate the energy transition. This includes new material systems for solar modules as well as storage solutions for which new kinds of catalysts are warranted. [...]

  • <p>The inhibitor Ex-527 attaches to the enzyme Sirt-3 (shown here in light grey) and to acetylated ADP ribose; this substance is a product which results from Sirt-3 mediated deacetylation. This blocks the sirtuin&rsquo;s active center to prevent further deacetylation. This way, the sirtuin has effectively set a permanent trap for itself the first time around.</p>NEWS      06.08.2013

    1000th protein structure decoded at BESSY II

    In July of this year, the 1000th protein structure based on measurements obtained at BESSY II was published. The molecule in question belongs to a class of proteins called sirtuins, which are involved in aging, stress, and metabolic processes within the human organism. Bayreuth University’s Prof. Clemens Steegborn and his team uncovered a clever mechanism used by active substances to inhibit sirtuin activity. The results have been published in the renowned scientific journal Proceedings of the National Academy of Sciences, USA, and could potentially point the way to new cancer therapies. [...]

  • NACHRICHT      02.08.2013

    Die Bauarbeiten beginnen: BESSY II erhält Anbau für neuen Laborkomplex

    Mit einem feierlichen Spatenstich beginnen am Montag, dem 5. August 2013 um 16:00 die Bauarbeiten für das neue Forschungslabor EMIL an BESSY II: Das „Energy Materials In-Situ Laboratory Berlin“, kurz EMIL, wird als hochmodernes  Präparations- und Analyselabor für die Solarenergie- und Katalyseforschung aufgebaut. Das Gemeinschaftsprojekt vom HZB und der Max-Planck-Gesellschaft soll eine einzigartige Infrastruktur bieten, um interdisziplinär und industriekompatibel neue Materialien und Technologien zu entwickeln, die die Energiewende ermöglichen. Dazu zählen neue Materialsysteme für Solarmodule und Speicherlösungen, für die neuartige Katalysatoren entwickelt werden müssen. [...]

  •  Optical laser flash (red) destroys the electronic order (blue) in magnetite and, within one trillionth of a second, switches the state of the material from insulating to conducting. SCIENCE HIGHLIGHT      29.07.2013

    Picosecond accurate slow-motion confirms oxide materials exhibit considerably faster switching properties than do semi-conductors

    As part of an international team of researchers, scientists at the Helmholtz Center Berlin (HZB) have observed the switching mechanism from a non-conducting to a conducting state in iron oxide (specifically, magnetite) with previously unrealized precision. This switching mechanism - which, in oxides, proceeds in two consecutive steps and which is thousands of times faster than it is in current transistors - is described in the current epub-ahead-of-print issue of the scientific journal Nature Materials (DOI: 10.1038/NMAT3718).   [...]

  • <p>When light hits the system, an electrical potential builds up. The metal oxide layer acts as a photo anode and is the site of oxygen formation. It is connected to the solar cell by way of a conducting bridge made of graphite (black). Since only the metal oxide layer is in contact with the electrolyte, the silicon solar cell remains safe from corrosion. A platinum spiral serves as the cathode where hydrogen is formed. </p>NEWS      29.07.2013

    The best of two worlds: Solar hydrogen production breakthrough

    Using a simple solar cell and a photo anode made of a metal oxide, HZB and  TU Delft scientists have successfully stored nearly five percent of solar energy chemically in the form of hydrogen. This is a major feat as the design of the solar cell is much simpler than that of the high-efficiency triple-junction cells based on amorphous silicon or expensive III-V semiconductors that are traditionally used for this purpose. The photo anode, which is made from the metal oxide bismuth vanadate (BiVO4) to which a small amount of tungsten atoms was added, was sprayed onto a piece of conducting glass and coated with an inexpensive cobalt phosphate catalyst. “Basically, we combined the best of both worlds,” explains Prof. Dr. Roel van de Krol, head of the HZB Institute for Solar Fuels: “We start with a chemically stable, low cost metal oxide, add a really good but simple silicon-based thin film solar cell, and – voilà – we’ve just created a cost-effective, highly stable, and highly efficient solar fuel device.” [...]

  • <p>Fundamental processes: Charge donation/backdonation in the [Fe(CO)5] model catalyst in solution was studiedby resonant inelastic X-ray scattering. This method can be used to selectively probe the electronic structure at each atom in the iron-carbonyl bond. </p>SCIENCE HIGHLIGHT      25.07.2013

    Watching catalysts at work – at the atomic scale

    Innovative combination of methods at HZB leads to fundamental insights in catalyst research [...]

  • NACHRICHT      24.07.2013

    Spektakulärer Einbau

    Industrienahe Anlage zur Herstellung von Dünnschichtsolarmodulen aus Kupfer-Indium-Gallium-Sulfid/Selenid am PVcomB komplett [...]

  • <p>The measurement (left) is impressively well reproduced in a simulation utilizing the HZB-code WAVE. </p>NEWS      16.07.2013

    First Observation of Undulator Photon Beams Carrying Orbital Angular Momentum

    For the first time researchers of HZB observed 99eV photons carrying Orbital Angular Momentum (OAM). The photons were detected in the 2nd harmonic off-axis radiation of a helical undulator. The measurements confirm a theoretical prediction from five years ago. In the visible regime these singular photon beams or OAM-photons can be generated from laser light utilizing phase modulating techniques. The proof-of-principle experiment at BESSY II demonstrates the availability of OAM-photons up to the X-ray regime in low emittance machines, with helical undulators being used for the generation of circularly polarized radiation similar to today’s 3rd generation light sources. [...]

  • <p>HZB manufactured sawtooth grating. Photo: HZB</p>NEWS      15.07.2013

    Grating manufacture at Helmholtz-Zentrum Berlin scores breakthrough - Sawtooth gratings for photon sources are once again available

    The Technology Center for Optical Precision Gratings at the Helmholtz-Zentrum Berlin (HZB) has scored a breakthrough in the manufacture of these optical building elements. Gratings are used in photon sources to diffract light and filter out those wavelengths that are needed for a given experiment. Now, after two and a half years of work, for the first time ever, the developers have created high precision sawtooth gratings that meet the demands of scientific experimentation. These sawtooth (or blazed) gratings recently underwent testing at BESSY II, the HZB’s own electron storage ring. The result: The gratings’ behavior conformed to the researchers’ theoretical predictions. The HZB Technology Center is the World’s sole manufacturer of high efficiency precision gratings for use in photon sources. The project has received EU funding in the form of an EFRE grant. [...]

  • Scanning electron microscopy image of the sample corresponding to a top view on the nanopillar structure. NEWS      03.07.2013

    Shedding light on magnetoelectric coupling

    Effect opens up new possibilities for digital data storage [...]

  • <p>Polycrystalline film growth during coevaporation in real time using in situ X-ray diffraction and fluorescence analysis.</p>SCIENCE HIGHLIGHT      27.06.2013

    Watching solar cells grow

    For the first time, a team of researchers at the HZB led by Dr. Roland Mainz and Dr. Christian Kaufmann has managed to observe growth of high-efficiency chalcopyrite thin film solar cells in real time and to study the formation and degradation of defects that compromise efficiency. To this end, the scientists set up a novel measuring chamber at the Berlin electron storage ring BESSY II, which allows them to combine several different kinds of measuring techniques. Their results show during which process stages the growth can be accelerated and when additional time is required to reduce defects. Their work has now been published online in Advanced Energy Materials. [...]

  • NEWS      25.06.2013

    Helmholtz Center Berlin sets future course

    After some 60 years of successful neutron research in Berlin, research at the BER II reactor will officially cease by 2020 [...]

  • NACHRICHT      18.06.2013

    Festkolloquium zu Ehren von Prof. K. Heinz Lindenberger

    Mit einem Ehrenkolloquium möchten die Geschäftsführer des HZB an das Wirken von Prof. Karl Heinz Lindenberger, ehemaliger Geschäftsführer des HMI, erinnern, der im Oktober des vergangenen Jahres verstorben ist. Das Kolloquium findet am 18. Juni um 16:00 Uhr im Hörsaal des Lise-Meitner-Campus Wannsee statt. Wir möchten Sie sehr herzlich zu der Veranstaltung einladen. [...]

  • NEWS      18.06.2013

    Masdar PV and Helmholtz-Zentrum Berlin partner to accelerate development of next generation thin film crystalline silicon PV technology

    • HZB’s first milestone achieved by succeeding in depositing a thin, crystalline 10μm layer of silicon on glass utilizing laser-crystallization [...]

  • <p>This complex solar cell is coated with two different catalysts and works like an "artificial leaf", using sunlight to split water and yield hydrogen gas.</p>NEWS      17.06.2013

    Polymer-coated catalyst protects "artificial leaf"

    Due to the fluctuating availability of solar energy, storage solutions are urgently needed. One option is to use the electrical energy generated inside solar cells to split water by means of electrolysis, in the process yielding hydrogen that can be used for a storable fuel. Researchers at the HZB Institute for Solar Fuels have modified so called superstrate solar cells with their highly efficient architecture in order to obtain hydrogen from water with the help of suitable catalysts. This type of cell works something like an "artificial leaf." But the solar cell rapidly corrodes when placed in the aqueous electrolyte solution. Now, Ph.D. student Diana Stellmach has found a way to prevent corrosion by embedding the catalysts in an electrically conducting polymer and then mounting them onto the solar cell's two contact surfaces, making her the first scientist in all of Europe to have come up with this solution. As a result, the cell's sensitive contacts are sealed to prevent corrosion with a stable yield of approx. 3.7 percent sunlight. [...]

  • <p>Gut besucht: Die F&uuml;hrungen um den Forschungsreaktor BER II in Wannsee stie&szlig;en bei den Besuchern auf gro&szlig;es Interesse.</p>NACHRICHT      11.06.2013

    3.700 Menschen besuchten das Helmholtz-Zentrum Berlin zur Langen Nacht der Wissenschaften

    Viele Wissenschaftsinteressierte in Berlin hatten sich den 8. Juni 2013 lange im Voraus freigehalten. An diesem Samstag strömten 29.000 Menschen zur Langen Nacht der Wissenschaften, um sich mit Forschern zu unterhalten, Vorträge zu hören und Eindrücke von den Laboren in der Stadt zu bekommen. Eine sehr beliebte Adresse war in diesem Jahr wieder das Helmholtz-Zentrum Berlin, das an beiden Standorten, in Wannsee und Adlershof, seine Besucher herzlich empfing. [...]

  • Die Lange Nacht der Wissenschaften erreicht die Internetgemeinde: Die #ScienceTweetup Teilnehmer schauten sich in Forschungszentren um und twitterten. Foto: @klugestenacht <a href="https://pic.twitter.com/9EBKA7A8iE" class="extern">pic.twitter.com/9EBKA7A8iE</a>
NACHRICHT      11.06.2013

    Das Helmholtz-Zentrum Berlin beim ScienceTweetup: Aktive Blogger besuchen Forschungseinrichtungen und berichten

    Zum ersten Mal fand parallel zur Langen Nacht der Wissenschaften ein ScienceTweetup statt. 20 Twitterer nutzten die Gelegenheit, Labore verschiedener Forschungseinrichtungen zu besichtigen, die sonst der Öffentlichkeit selten zugänglich sind. Exklusive Führungen fanden im Helmholtz-Zentrum Berlin, im Deutschen Zentrum für Luft- und Raumfahrt, im Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik sowie im Institut für Physik der Humboldt-Universität zu Berlin statt. Bei einem Rundgang durch den Berliner Elektronenspeicherring BESSY II ließen sich die Teilnehmer von der Größe der Anlage begeistern. Anschließend berichten die Twitterer und Blogger in ihren Social-Media-Foren. [...]

  • NACHRICHT      06.06.2013

    Helmholtz-Zentrum Berlin stärkt Aktivitäten zur Forschung an solaren Brennstoffen in Zusammenarbeit mit der Universität Erlangen-Nürnberg

    Gestern hat der Senat der Helmholtz-Gemeinschaft seine Zustimmung gegeben für die Ansiedlung eines neuen Helmholtz-Instituts zur Erforschung Erneuerbarer Energien in Erlangen und Nürnberg, kurz HI ERN. Das Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) ist neben dem Forschungszentrum Jülich und der Universität Erlangen und Nürnberg einer der Kooperationspartner und wird seine Expertise auf dem Gebiet der Dünnschicht-Photovoltaik in das neue Institut einbringen. [...]

  • Julian Petrasch lässt seine Sonden an Ballons in den Himmel steigen, wo sie in großer Höhe (ca. 30 Kilometer) zerplatzen. An einem Fallschirm segelt die Kapsel zu Boden. Die innen liegenden Handykameras nehmen dabei spektakuläre Ansichten auf.
Foto: HZB/KubatzkiNACHRICHT      04.06.2013

    Berliner gewinnt beim Jugend-Forscht-Bundeswettbewerb. Er entwickelte eine kostengünstige Alternative zu Satellitenaufnahmen

    Bereits zum zweiten Mal ist der 21jährige Informatikstudent Bundessieger beim Jugend-forscht-Wettbewerb in Leverkusen geworden. Er gewann in der Kategorie Geo- und Raumwissenschaften. Petrasch entwickelte eine Alternative zu kostspieligen Satelittenaufnahmen. Er konstruierte innovative Stratosphärenballons und stattet sie mit Handykameras aus. Bei mehreren Testflügen bewies er, dass dieses System hervorragend funktionierte und die Luftaufnahmen eine erstaunlich hohe Auflösung hatten. Mit dieser Technologie können nicht nur aktuelle Luftbilder aufgenommen werden. Sie eignet sich auch, um thematische Karten, zum Beispiel zur Vegetation, zu erstellen. Das Schülerlabor des Helmholtz-Zentrum Berlin hat Julian Petrasch bei seinem Vorhaben unterstützt. [...]

  • Structure of Brr2-protein belongs to a family of enzymes that are called “RNA helicases”.NEWS      31.05.2013

    Discovery of how a key enzyme of the spliceosome exerts its controlling function

    To sustain life, processes in biological cells have to be strictly controlled both in time and in space. By using the MX-Beamline of synchrotron radiation source BESSY II research workers at the Max Planck Institute for Biophysical Chemistry in Göttingen and the Free University of Berlin have elucidated a previously unknown mechanism that regulates one of the essential processes accompanying gene expression in higher organisms. In humans, errors in this control mechanism can lead to blindness. This discovery has been published in the renowned scientific journal Science (23th may 2013). [...]

  • Dr. Tristan Petit joins the Aziz-Team. Foto: T.PetitNEWS      31.05.2013

    Humboldt Fellow new addition to Aziz team

    Starting June 1st, Dr. Tristan Petit will be joining Prof. Dr. Emad Flear Aziz’ team for a two-year postdoc. His Humboldt Foundation Fellowship for Postdoctoral Researchers gave Petit the option to choose his German scientific host. Ultimately, he decided on the Joint Ultrafast Dynamics Lab in Solutions and at Interfaces (JULiq) that was set up by Aziz. Says Petit: “I really wanted to be on Aziz’ team as they have a lot of collective expertise with spectroscopy in water.” [...]

  • NACHRICHT      29.05.2013

    Lange Nacht der Wissenschaften am HZB: Wir öffnen für Sie am 8. Juni von 16 bis 24 Uhr

    Am 8. Juni öffnen wir für Sie zur Langen Nacht der Wissenschaften unsere Türen – in Wannsee und Adlershof. 250 HZB-Mitarbeiter, darunter viele Wissenschaftlerinnen und Wissenschaftler, werden mit am Start sein: Sie freuen sich darauf, Ihnen hautnah einen lebendigen Einblick in ihre Forschung zu geben. Besucher haben die Möglichkeiten, unsere großen Forschungsanlagen an beiden Standorten zu besichtigen. Jedes Jahr machen sich mehr als 2500 Spitzenforscher aus aller Welt auf dem Weg zu unseren Laboren und Anlagen. [...]

  • Familie und Forschung: Die Teilnehmerinnen und Teilnehmer des Workshops diskutierten über Maßnahmen zur besseren Vereinbarkeit von Beruf und Familie speziell für den Forschungsbereich.
Foto: Rebecca RichterNACHRICHT      29.05.2013

    Wie Forschungseinrichtungen bei der Suche nach qualifiziertem Personal punkten können

    HZB war Gastgeber des Workshops „Vereinbarkeit von Beruf und Familie“ der Hertie-Stiftung [...]

  • <p>The colloids that were used for the model: particles, each with a diameter of approximately 150 nanometers, suspended in water. The solid nucleus consists of the plastic polystyrene, the surrounding shell of a thermosensitive poly(N-isopropyl-acrylamide) network. By lowering the temperature, each individual particle's volume - and, by definition, its packing density - can be increased. Photo: HZB/M. Siebenb&uuml;rger</p>SCIENCE HIGHLIGHT      28.05.2013

    Crystal-clear method for distinguishing between glass and fluids

    Many solids are produced from melting. Depending on how quickly they cool off, invariably, internal tensile stresses begin to build up. One example are Prince Rupert's Drops, or Dutch tears: you can hit their thick end with a hammer without breaking them while a slight pressure applied to their thin end is enough to shatter the entire tear. The properties of safety or even gorilla glass are determined to a large extent by their internal tensile stresses. However, until now, our understanding of the unique characteristics exhibited by the condition of the glass as compared with a tough molten mass was spotty at best. Now, a collaboration of several German and Cretian research teams has offered a surprisingly simple model to explain the difference between glass and molten materials. [...]

  • <p>Foto: F&uuml;r das Forschungsinstitut IRESEN werden neue Geb&auml;ude errichtet. Foto: IRESEN</p>NACHRICHT      23.05.2013

    HZB-Forscher Ahmed Ennaoui in den Vorsitz von IRESEN gewählt

    Marokko liegt im Sonnengürtel der Erde, nutzt bislang aber noch hauptsächlich importierte fossile Brennstoffe, um den Strombedarf zu decken. Doch das Land will die Forschung zu Solarenergie verstärken. Eine wichtige Rolle dabei wird das Institut IRESEN (Institut de Recherche en Energie Solaire et Energies Nouvelles) spielen, das als staatlicher Projektträger eine Forschungslandschaft in Marokko aufbauen und Industrie- und Grundlagenforschung miteinander verknüpfen soll. Nun wurde der erfahrene HZB-Solarexperte Prof. Dr. Ahmed Ennaoui in den Vorsitz des wissenschaftlichen Rats der Forschungseinrichtung IRESEN gewählt. [...]

  • <p>Julia Vogt aus der Gruppe SRF Wissenschaft (G-ISRF) erhielt f&uuml;r ihr Poster &uuml;ber die systematische Verdr&auml;ngung von magnetischen Flusslinien aus supraleitendem Niob auf der 4. IPAC den Posterpreis. Ebenfalls ausgezeichnet wurde Yichao Mo (UMD, College Park, Maryland). Die beiden hatten sich unter mehr als 110 Bewerberinnen und Bewerbern durchgesetzt. Foto: IPAC</p>NACHRICHT      21.05.2013

    Posterpreis auf Internationaler Teilchenbeschleunigerkonferenz an Julia Vogt

    Vom 12. bis 17. Mai tagte in Shanghai, China, die 4. Internationale Konferenz für Teilchenbeschleuniger (International Particle Accelerator Conference, IPAC13). Rund 1.200 Teilnehmerinnen und Teilnehmern aus aller Welt hatten sich versammelt, um sich über Fortschritte bei Lichtquellen und Teilchenbeschleunigern auszutauschen. Besonderes Gewicht legten die Organisatoren auf die Postersession, auf der Nachwuchswissenschaftler ihre Arbeiten vorstellen konnten. Dabei erhielt die HZB-Doktorandin Julia Vogt aus dem Institut SRF Wissenschaft und Technologie (G-ISRF) einen Preis für das beste Poster. Insgesamt hatte die Jury über 110 eingereichte Poster begutachtet und zwei davon ausgezeichnet. [...]

  • <p>Magnet islands: Scanning electron micrograph from a regularly arranged square lattice of magnetic islands. The researchers created the islands using electron beam lithography &copy; modifiziert nach / modified from Physical Review Letters</p>NEWS      16.05.2013

    RUB physicists let magnetic dipoles interact on the nanoscale for the first time

    “Of great technical interest for future hard disk drives”

    Physicists at the Ruhr-Universität Bochum (RUB) have found out how tiny islands of magnetic material align themselves when sorted on a regular lattice - by measurements at BESSY II. Contrary to expectations, the north and south poles of the magnetic islands did not arrange themselves in a zigzag pattern, but in chains. “The understanding of the driving interactions is of great technological interest for future hard disk drives, which are composed of small magnetic islands”, says Prof. Dr. Hartmut Zabel of the Chair of Experimental Physics / Solid State Physics at the RUB. Together with Dr. Akin Ünal, Dr. Sergio Valencia and Dr. Florian Kronast from the Helmholtz-Zentrum in Berlin, Bochum’s researchers report in the journal “Physical Review Letters”.


    Read the full text in the press release of RUB:


  • <p>A German-US-collaboration explores photosynthesis with the help of light sources as SLAC or BESSY II by taking snapshots of catalytic reactions. Illustration: Greg Stewart, SLAC National Accelerator Laboratory</p>NEWS      15.05.2013

    Snap shots of one of life's central processes

    Human Frontier Science Program provides funding of 900,000 US Dollars in support of international collaboration on photosynthesis. [...]

  • SCIENCE HIGHLIGHT      15.05.2013

    Zwei Humboldt-Stipendiaten forschen am HZB: In der neuen Lichtblick stellen wir Jan Heyda und Stefano Angioletti-Uberti vor

    Die Qualität des Alexander-von-Humboldt-Stipendiums ist weltweit anerkannt. Die Nachwuchswissenschaftler Stefano Angioletti-Uberti und Jan Heyda haben sich für dieses Stipendium entschieden, obwohl sie gleich mehrere Angebote für einen Forschungsaufenthalt im Ausland bekommen hatten. Beide forschen am HZB-Institut für Weiche und Funktionale Materialien bei Joachim Dzubiella. Sie interessieren sich für stimuli-responsive Polymaterialien. Wir stellen sie in der neuen Ausgabe der Lichtblick vor. [...]

  • Im Labor für Elektrochemie ziehen die Mädchen alle weiße Kittel an. Dann können sie einen Anhänger aussuchen, den sie vergolden möchten. Foto: Rebecca Richter/HZB
 NACHRICHT      25.04.2013

    Girls‘ Day 2013: 95 Mädchen stürmen das Helmholtz-Zentrum Berlin

    95 junge Mädchen zwischen 10 und 15 Jahren sind am Girls‘ Day, den 25. April 2013,  zum Helmholtz-Zentrum Berlin gekommen. Sowohl am Standort Wannsee als auch am Standort Adlershof konnte das HZB-Schülerlabor viele Wissenschaftlerinnen und Mitarbeiter dafür gewinnen, die Mädchen in kleinen Gruppen zu betreuen und ihnen einen Eindruck von ihrer Arbeit zu vermitteln. [...]

  • <p>Participants - Kick-off-Workshop Helmholtz Virtual Institute &bdquo;New states of matter and their excitations&ldquo;</p>NEWS      23.04.2013

    Quantum computer research

    Monday, April 22, saw the start of the Helmholtz Virtual Institute’s three-day kick-off workshop entitled “New states of matter and their excitations” at the Free University Berlin. The Institute, which is coordinated by the HZB, has as its focus the collective behavior and new phases of matter. At the opening event, Prof. Dr. Brigitta Schütt, the Free University’s VP, said she was thrilled that Dahlem was the workshop location for this important collaboration – which also includes the Dresden-based Max Planck Institute for the Physics of Complex Systems, Dresden Technical University, Göttingen University, and Dortmund Technical University. Schütt stressed that the particular strength of Berlin as a research hub was fed by the performance of the region’s scientific institutions and their openness to collaborations. [...]

  • NACHRICHT      12.04.2013

    Materialforschung mit ultrahochempfindlicher Spektroskopie

    Neues Labor zur Erforschung biologischer Zellen und Solarzellen des Helmholtz-Zentrums Berlin und der Freien Universität Berlin in Adlershof eröffnet [...]

  • <p>D&uuml;nnschicht-Solarzellen - hier so genannte CIGS-Zellen - haben ein gro&szlig;es Entwicklungspotenzial. In den letzten Jahren erzielen Forscher immer wieder neue Wirkungsgradrekorde.</p>NACHRICHT      05.04.2013

    In der Dünnschicht-Photovoltaik liegt enormes Potenzial - Experten für Dünnschichtsolarzellen treffen sich vom 16. bis 18. April auf der „Photovoltaics Thin-Film Week“ in Berlin

    Die Krise in der Solarbranche ist noch nicht durchgestanden. Chinesische Unternehmen dominieren mit Billigpreisen den Markt für Solarmodule, aber auch in Asien können viele Unternehmen dem Wettbewerbsdruck nicht standhalten. Einen Wettbewerbsvorteil können hiesige Solarfirmen nur durch Technologievorsprung und konsequente Innovationen erreichen. Die Dünnschicht-Photovoltaik bietet ein großes, längst noch nicht ausgeschöpftes Potenzial für kostengünstige und leistungsfähige Solarmodule. Vom 16. bis 18. April treffen sich in Berlin Experten aus aller Welt bei der „Photovotaics Thinfilm-Week“. Forscher und Fachleute aus der Industrie tauschen sich über neuste Ergebnisse aus Forschung und Entwicklung der Dünnschichtphotovoltaik aus und beraten über notwendige politische Rahmenbedingungen. [...]

  • An ultrafast spin current triggers the emission of Terahertz-Radiation. NEWS      01.04.2013

    Ultrafast Spin Manipulation at THz frequencies

    The demands for ever increasing speed of information storage and data processing have triggered an intense search for finding the ultimately fast ways to manipulate spins in a magnetic medium. In this context, the use of femtosecond light pulses – the fastest man-made event - with photon energies ranging from X-rays (as used for instance at the HZB femto-slicing facility) to THz spectral range proved to be an indispensable tool in ultrafast spin and magnetization dynamics studies. [...]

  • <p></p>SCIENCE HIGHLIGHT      27.03.2013

    Magnetic fingerprints of interface defects in silicon solar cells detected

    Using a highly sensitive method of measurement, HZB physicists have managed to localize defects in amorphous/crystalline silicon heterojunction solar cells. Now, for the first time ever, using computer simulations at Paderborn University, the scientists were able to determine the defects' exact locations and assign them to certain structures within the interface between the amorphous and crystalline phases. [...]

  • NACHRICHT      27.03.2013

    Konferenz für Dünnschicht-Photovoltaik vom 16. bis 18. April 2013 in Berlin

    Die "Photovoltaics Thinfilm Week" hat sich als Expertenforum für Dünnschicht-Solarzellen etabliert [...]

  • NACHRICHT      26.03.2013

    Mit Mathematik die Sonne besser nutzen - das Virtuelle Institut „Mikrostruktur-Kontrolle für Solarzellen“ am HZB schafft breites Expertennetzwerk

    Das Helmholtz-Zentrum Berlin (HZB) koordiniert seit kurzem ein Virtuelles Institut, das sich intensiv und mit einem breit angelegten Forschungsansatz modernen Solarzellen widmet. Es ist ein Schulterschluss von Forschern aus verschiedenen Forschungsdisziplinen, um die Grundlage für noch leistungsfähigere Solarzellen zu legen. Die Wissenschaftler wollen die komplexe Mikrostruktur polykristalliner Absorberschichten in Dünnschichtsolarzellen untersuchen und verstehen lernen. [...]

  • <p>Julian Petrasch, 21 Jahre, bei der Pr&auml;sentation seiner Ergebnisse.</p>NACHRICHT      26.03.2013

    Über den Wolken: Messdaten aus der Stratosphäre mit Wetterballons gewinnen

    Der Informatik-Student Julian Petrasch siegte beim Berliner Landeswettbewerb „Jugend forscht“ in der Kategorie Geo- und Raumwissenschaften – und hat damit auch gleich den Fahrschein für den bundesweiten Ausscheid im Mai in Leverkusen in der Tasche. Das Schülerlabor des HZB hat Julian Petrasch, 21 Jahre, unter anderem bei der Materialbeschaffung und Präsentation seiner Arbeit unterstützt. [...]

  • NEWS      15.03.2013

    Real time observation of chemical reaction at catalyst

    Scientists at the U.S. Department of Energy's (DOE) SLAC National Accelerator Laboratory used LCLS, together with computerized simulations, to reveal surprising details of a short-lived early state in a chemical reaction occurring at the surface of a catalyst sample. The study offers important clues about how catalysts work and launches a new era in probing surface chemistry as it happens.


  • <p>Die Kurven zeigen, wie sich mit zunehmender Dotierung in der halbleitenden Schicht das Transistorverhalten drastisch verbessert. Als Ursache machten die Forscher die Bildung leitf&auml;higer Perkolationspfade aus, die den Transport von Ladungen entlang des Transistorkanals erm&ouml;glichen.</p>SCIENCE HIGHLIGHT      13.03.2013

    Schwache Dotierung verbessert polymerbasierte Feldeffekttransistoren

    In der organischen Elektronik haben sich Mischsysteme, in denen halbleitende Makromoleküle in einer isolierenden Polymermatrix eingebettet sind, als besonders geeignet für die Herstellung von  Transistoren erwiesen. Bislang waren die Gründe dafür nicht genau bekannt. Nun konnten Wissenschaftler aus mehreren Forschungseinrichtungen die komplexe Morphologie dieser Mischsysteme aufklären und damit die elektronischen Eigenschaften erklären. [...]

  • NACHRICHT      09.03.2013

    Kathrin Lange erhält Wilhelm-Ostwald-Nachwuchspreis 2012

    Dr. Kathrin Maria Lange erhält für ihre am HZB angefertigte Dissertation den Wilhelm-Ostwald-Nachwuchspreis 2012. Der mit 2500,- Euro dotierte Preis wird von der Wilhelm-Ostwald-Gesellschaft zu Großbothen e.V., der Deutschen Bunsen-Gesellschaft für Physikalische Chemie und der Gesellschaft Deutscher Chemiker verliehen. Die Preisverleihung findet am 9. März in Großbothen bei Leipzig statt, dem Arbeitsort des Nobelpreisträgers für Chemie 1909, Wilhelm Ostwald. [...]

  • NEWS      28.02.2013

    International summer school Quantsol conveys basics of photovoltaics and solar energy conversion

    For the sixth year in a row, future solar researchers are invited to attend the HZB’s International Summer School on Photovoltaics and New Concepts of Quantum Solar Energy Conversion – Quantsol. The summer school program is scheduled for September 8th through the 15th in Hirschegg, Austria, and has been organized jointly by the Helmholtz Centre Berlin and Ilmenau Technical University. All interested parties are welcome to apply before May 26, 2013. [...]

  • <p>Uwe M&uuml;ller und Thomas Frederking (v.li.) durchtrennen das Band. Der neue Detektor ist nun einsatzbereit.</p>NACHRICHT      27.02.2013

    Proteinstrukturen besser erforschen

    Feierlich eingeweiht: Der neue Pilatus-Detektor für die Kristallographie ist nun einsatzbereit [...]

  • NACHRICHT      25.02.2013

    HZB-Zeitung "lichtblick" erschienen

    Forscherinnen und Forscher aus dem HZB versuchen, die Herausforderungen der Energieversorgung zu meistern. Sie entwicklen Solarzellen der nächsten Generation und neuartige Materialien für solare Brennstoffe. Verstärkung bekommen sie nun durch ein neu gegründetes HZB-Institut, das von Dr. Silke Christiansen geleitet wird. Im Gespräch verrät sie, wie sie an Naturwissenschaften gekommen ist. [...]

  • <p>The titanium dioxide nanoparticles crystallize in a polymer network at room temperature.</p>NEWS      21.02.2013

    Titanium dioxide nanoreactor

    Tiny particles of titanium dioxide are found as key ingredients in wall paints, sunscreens, and toothpaste; they act as reflectors of light or as abrasives. However with decreasing particle size and a corresponding change in their surface-to-volume ratio, their properties change so that crystalline titanium dioxide nanoparticles acquire catalytic ability: Activated by the UV component in sunlight, they break down toxins or catalyze other relevant reactions. [...]

  • Upon contact between the oxygen atoms protruding from the backbone and the metal, the molecules' internal structure changed in such a way that they lost their semiconducting properties and instead adopted the metallic properties of the surface.</br>NEWS      18.02.2013

    Organic Electronics - How to make contact between carbon compounds and metals

    Organic electronics has already hit the market in smart-phone displays and holds great promise for future applications like flexible electroluminescent foils (a potential replacement for conventional light bulbs) or solar cells that convert sunlight to electricity. A reoccurring problem in this technology is to establish good electrical contact between the active organic layer and metal electrodes. Organic molecules are frequently used also for this purpose. Until now, however, it was practically impossible to accurately predict which molecules performed well on the job. They basically had to be identified by trial-and-error. Now, an international team of scientists around Dr. Georg Heimel and Prof. Norbert Koch from the HZB and the Humboldt University Berlin has unraveled the mystery of what these molecules have in common. Their discovery enables more focused improvements to contact layers between metal electrodes and active materials in organic electronic devices. [...]

  • Scanning Electron Microscopy of Nanowires  of Silver. <br />They have diameters around 0,1 micrometer  and lenghts <br /> between 5  and 10 micrometern. NEWS      29.01.2013

    New Options for transparent contact electrodes

    Found in flat screens, solar modules, or in new organic light-emitting diode (LED) displays, transparent electrodes have become ubiquitous. Typically, they consist of metal oxides like In2O3, SnO2, ZnO and TiO2 . [...]

  • NEWS      28.01.2013

    Demagnetization by rapid spin transport

    The fact that an ultrashort laser pulse is capable of demagnetizing a ferromagnetic layer in a jiffy has been well-known since approximately 1996. What we don't yet understand, however, is how exactly this demagnetization works. Now, physicist Dr. Andrea Eschenlohr and her colleagues at the Helmholtz Centre Berlin and Uppsala University in Sweden have shown that it turns out not to be the light pulse itself that prompts demagnetization. [...]

  • NEWS      21.01.2013

    MIT's Prof. Tuller named new recipient of Helmholtz International Fellow Award

    World-renowned expert for solid state electrochemistry to conduct research at HZB [...]

  • NACHRICHT      17.01.2013

    Vernissage mit den prämierten Fotos des "HZB-Photowalk"

    Am Freitag, dem 18. Januar um 15 Uhr lädt das HZB herzlich zur Vernissage der Ausstellung "HZB Science Photowalk - Augenblicke" ein. [...]

  • <p>With the help of computer simulation, researchers have been<br />able to calculate the movements and forces between <br />water molecules (small, red-and-white dipoles), a ligand (shown in green),<br />and the protein molecule's water-repellant hollow pocket.</p>SCIENCE HIGHLIGHT      16.01.2013

    Water fluctuations mediate lock-and-key fit

    Without water, life as we know, it would not exist. Nearly every biological binding process that takes place within a cell requires the presence of an aqueous environment. Here, tiny molecules called ligands fit like "keys" into their matching "locks" - docking sites on larger protein molecules. This in turn activates signals or leads to the production of some other substance by the cell. But what was previously unclear, was the part water plays in all this. Is water merely a passive transport medium or does it perform other, more active jobs as well? Now, HZB's own Prof. Dr. Joachim Dzubiella and a team of physicists have looked for answers to this question using a computer simulated model system. In the process, they discovered that water is capable of actively influencing the docking speed of the ligand through subtle interactions with other molecules' unique geometry and surface topography. Their findings could become important in drug delivery. [...]

  • NACHRICHT      10.01.2013

    PD Dr. Silke Christiansen verstärkt Energieforschung

    Die Werkstoffwissenschaftlerin PD Dr. Silke Christiansen leitet ab Januar 2013 am Helmholtz-Zentrum Berlin das neue Institut „Nanoarchitekturen für die Energiewandlung“. Damit baut das HZB die Solarenergieforschung weiter aus. Für den Aufbau des Instituts steht Frau Christiansen eine zusätzliche Finanzierung durch die Helmholtz-Rekrutierungsinitiative von 600.000 Euro pro Jahr über fünf Jahre zur Verfügung. [...]

  • Prof. Dr. Klaus LipsNACHRICHT      07.01.2013

    Klaus Lips ist Professor an der Freien Universität Berlin

    Prof. Dr. Klaus Lips hat den Ruf auf die W2-Professur „Analytik für die Photovoltaik“ am Fachbereich Physik der Freien Universität Berlin angenommen und wurde im Dezember 2012 offiziell ernannt. Gleichzeitig ist Klaus Lips wissenschaftlicher Leiter des Zukunftsprojekts „EMIL“ am Helmholtz-Zentrum Berlin und wird in den nächsten Jahren am Elektronenspeicherring BESSY II ein einzigartiges Experimentierlabors für die in-situ Analytik von Dünnschichtsolarzellen aufbauen.  [...]

  • Der Pilatus-Detektor (rechts) ist mit dem ASAXS-Instrument<br />des HZB am FCM-Strahlrohr der PTB installiert.NACHRICHT      21.12.2012

    Mit neuem Detektor kleinsten Biomarkern auf der Spur

    PTB installiert vakuumkompatiblen ortsempfindlichen Röntgendetektor am Elektronenspeicherring BESSY II. Forscher können damit die Größe kontrastarmer Nanoobjekte bestimmen.


  • In a graphene sheet on nickel, every other <br />carbon atom is strongly bonded to the nickel atom <br />which it sits on top of while its neighboring <br />carbon atoms do not face nickel atoms.<br /> This atomic arrangement breaks the original<br /> lattice symmetry. NEWS      21.12.2012

    Graphene on Nickel: Electrons behave like light

    Dr. Andrei Varykhalov and his colleagues in the group of Prof. Dr. Oliver Rader investigated at BESSY II the electronic properties of nickel coated with graphene and achieved an astonishing result. They could show that the conduction electrons of the graphene behave rather as light than as particles. Physicists had originally expected such behavior only for freestanding graphene layers which show a perfect honeycomb structure and not for graphene on nickel which disturbs the perfect hexagonal symmetry. Their results are supported by calculations of two theoretical groups using novel concepts. Their report was published in the open access journal, Phys. Rev. X, the new top journal of the Physical Review. [...]

  • workshop group fotoNEWS      20.12.2012

    Workshop on analytical tools for PV, October 29th - November 4th, 2012


  • <p>The heart oft the new Zone-Plate monochromator for ultrafast<br />science with FEMTOSLICING is an array of<br />so-called reflection zone plates. These diffractive optical<br />elements cover the photon energy range from<br />410 to 1333 eV and are completely manufactured<br />in-house at HZB. <br />(courtesy A. Firsov, M. Brzhezinskaya).</p>NEWS      20.12.2012

    Femtoslicing facility successfully upgraded: New opportunities in ultrafast x-ray science

    Ultrashort X-ray pulses are an indispensable tool to visualize ultrafast processes in solids and liquids. In order to generate them at the BESSY II storage ring employing Femtoslicing, ultrashort laser pulses co-propoagate with the relativistic electrons in an undulator while exciting them to emit x-ray pulses of only 100 fs duration, a time range of atomic ordering phenomena in solids. [...]

  • NACHRICHT      19.12.2012

    Neue deutsch-russische Forschungsgruppe zu Topologischen Isolatoren

    Der HZB-Physiker Dr. Andrei Varykhalov war mit seinem Antrag auf Förderung einer „Helmholtz-Russia Joint Research Group“ erfolgreich. Mit diesem Programm fördert die Helmholtz-Gemeinschaft seit 2006 zusammen mit der „Russian Foundation for Basic Research“ Kooperationen zwischen deutschen und russischen Wissenschaftlern. Partner auf russischer Seite ist die Chemikerin Prof. Dr. Lada V. Yashina von der Moskauer Staatsuniversität. [...]

  • Der Blick ins Detail (hier in eine CIS-Dünnschicht-<br />solarzelle) hilft Forschern, die Zusammenhänge <br />innerhalb einer Solarzelle besser zu verstehen. <br />Das ist Voraussetzung für Entwicklung von <br />besseren, leistungsfähigeren Solarzellen der <br />nächsten Generation.NACHRICHT      19.12.2012

    Virtuelles Institut „Mikrostrukturkontrolle für Dünnschichtsolarzellen“ offiziell gestartet

    Kürzlich ist das Virtuelle Institut „Mikrostrukturkontrolle für Dünnschichtsolarzellen“ (MiCoTFSC) feierlich unter Beteiligung aller Partner an den Start gegangen. Das Helmholtz-Zentrum Berlin koordiniert diese Forschungskooperation, die mit Mitteln aus dem Impuls- und Vernetzungsfonds der Helmholtz-Gemeinschaft finanziert wird. Die Sprecherin des Virtuellen Instituts, Prof. Dr. Susan Schorr (HZB), hob während des Kick-off-Meetings die Zusammensetzung des Virtuellen Instituts mit hervorragenden Forschungsgruppen hervor, die verschiedenen Kompetenzen beim Solarzellenwachstum, mikrostruktureller und optoelektronischer Charakterisierung sowie Material- und Wachstumsmodellierung mitbringen. [...]

  • On the photo are shown from left to right <br />Manfred Weiss (HZB-MX), Bartosz Sekula (Lodz),<br />
Uwe Mueller (HZB-MX) and Anna Bujacz,<br /> Bartosz' Ph.D. supervisor.NEWS      18.12.2012

    MX-Posterprize to Bartosz Sekula, Lodz

    The prize for the best poster in the field of macromolecular crystallography was awarded to
    Bartosz Sekula from the University of Lodz (Poland). The poster committee unanimously selected the poster titled "Complexes of equine serum albumin with ligands" as this year's best poster in MX. [...]

  • SAS 2012 chairman Elliot Gilbert officially passed the  <br /> torch to Daniel Clemens and members of the next  <br /> organisation committee.
<br /> NEWS      18.12.2012

    Berlin to host 2015 International Small-Angle Scattering Conference

    Sydney passes torch to HZB as host to the SAS 2015 [...]

  • NEWS      17.12.2012

    Three-day exchange at User Meeting

    From December 12 to 14, more than 400 users of HZB's BER II and BESSY II large-scale equipment met up to discuss the current state of technology and exchange their views on pressing scientific issues. Two of the highlights were Science Day on December 13 and Neutron Day on December 14, both held at the Bunsensaal in Berlin-Adlershof. Both days, the focus was on instrumentation. Participants were able to learn about new technologies and advances in large-scale equipment instrumentation. Science Day featured the many scientific achievements that have been made thanks to BESSY II and BER II. [...]

  • NACHRICHT      12.12.2012

    Einstein Stiftung finanziert Postdoktoranden

    Die Einstein Stiftung Berlin stellt rund 300.000 Euro für einen  „Einstein International Postdoctoral Fellow“ zur Verfügung, der das Team um Prof. Dr. Emad Flear Aziz verstärken wird. „Damit kann ich einen promovierten Nachwuchswissenschaftler aus dem Ausland bis zum Auslaufen meines ERC-Grants im September 2016 beschäftigen”, sagt Aziz. Als Postdoc kommt ab Januar 2013 Dr. Kaan Atak, Bogazici University, Istanbul, in das neue JULiq-Labor,  das das HZB gemeinsam mit der Freien Universität Berlin betreibt. [...]

  • NACHRICHT      05.12.2012

    Forscher zeigen mit Berechnungen, dass kompakte Laser-Plasma-Beschleuniger möglich sind

    Ultrakurze Pulse aus kohärentem Röntgenlicht sind ein fantastisches Mittel, um Einsichten in atomare oder molekulare Reaktionen zu gewinnen. In Freien-Elektronen-Lasern können solche Pulse im Femtosekundenbereich (10 -15 sek) erzeugt werden. Doch bislang sind dafür enorme Beschleuniger nötig, die nur an wenigen Großforschungseinrichtungen der Welt zur Verfügung stehen.  An einer kompakteren Alternative arbeitet Dr. Atoosa Meseck vom HZB-Institut für Beschleunigerphysik mit Kollegen aus dem HZB und anderen Forschungseinrichtungen. Nun haben sie einen Bauplan für eine kompakte Quelle für kohärente kurzwellige Strahlung entworfen und berechnet. Dieses Ergebnis veröffentlichten sie in der Fachzeitschrift "Physical Review". [...]

  • NACHRICHT      03.12.2012

    HZB-Zeitung "lichtblick" infomiert über Neuigkeiten und gibt Einblicke in den Forschungsalltag des Helmholtz-Zentrum Berlin

    Die neue HZB-Zeitung "lichtblick" ist erschienen. In der aktuellen Ausgabe nehmen wir dieses Mal unsere Nachwuchsgruppen in den Fokus. Fünf junge Forscherinnen und Forscher entwickeln am HZB mit kreativen Ideen eigene Ansätze und Konzepte weiter. Wir erzählen außedem, wie HZB-Wissenschaftlerinnen dabei halfen, das Geheimnis um ein Gemälde des Künstlers Amedeo Modigliani zu lüften. Lesen Sie auch, warum es sich lohnt, Azubi am HZB zu werden. Hier finden Sie das PDF der "lichtblick". Wir wünschen Ihnen eine angenehme Lektüre! [...]

  • The picture shows the topography of graphene on gold with<br />periodic beatings ten times larger than the periodicity of<br />the carbon atoms. These beatings are moiré-patterns, emerging<br />because of the different atomic structures of graphene and the<br />underlying monolayer of gold atoms. The structure of moiré<br />influences chemical interactions between gold and graphene<br />layer and also electronic properties and spin behavior in graphene.<br />NEWS      27.11.2012

    Graphene switches: HZB research group makes it to first base

    Ever since graphene was first isolated a few years ago, this quasi-two-dimensional network made up of a single layer of carbon atoms has been considered the magic material. Not only is graphene mechanically highly resilient, it also provides an interesting basis for new spintronic components that exploit the magnetic moment of conduction electrons. [...]

  • Der Campus der Universität Uppsala<br />
NACHRICHT      22.11.2012

    HZB-Wissenschaftler kooperieren in Forschung und Lehre: Dr. Atoosa Meseck unterrichtet „Beschleunigerphysik“ an der Universität Uppsala in Schweden

    Dr. Atoosa Meseck wird vom 25. November bis 10. Dezember 2012 eine Blockvorlesung über „Beschleunigerphysik“ an der Universität Uppsala halten. Die habilitierte Physikerin forscht am Institut für Beschleunigerphysik am Helmholtz-Zentrum Berlin und nimmt Lehrverpflichtungen an der Humboldt-Universität zu Berlin wahr. Im Rahmen einer Kooperation mit dem Fachbereich „Physik und Technologie“ der schwedischen Universität Uppsala engagiert sich Atoosa Meseck, um den wissenschaftlichen Nachwuchs qualifiziert auszubilden. [...]

  • NACHRICHT      20.11.2012

    HZB engagiert sich im Rahmen der HU-Graduiertenschule „SALSA“ in Adlershof

    Ausschreibung von 15 Promotionsstipendien an der School of Analytical Sciences Adlershof  (SALSA) [...]

  • Sebastian Gerischer beim Vortrag auf  dem „7th International <br />Sample Environment Workshop“ NACHRICHT      05.11.2012

    Sebastian Gerischer erhält Posterpreis auf dem 7. Internationalen Workshop der Probenumgebung in Sydney

    Sebastian Gerischer, Ingenieur in der Abteilung Probenumgebung, wurde für seine Arbeit mit dem „Michael-Meißner-Posterpreis“ ausgezeichnet, der auf dem „7th International Sample Environment Workshop“ verliehen wurde. An dieser Veranstaltung nahmen mehr als 60 Teilnehmer von 14 Neutronenstreuzentren aus der ganzen Welt teil. Der Preis ist nach dem ehemaligen Abteilungsleiter der Probenumgebung, Michael Meißner, benannt, der diesen Workshop zum ersten Mal vor mehr als zehn Jahren initiiert hat. Er hat damit entscheidend zur Vernetzung der Probenumgebung und zu ihrer Anerkennung durch die Fachgemeinschaft und Nutzerschaft beigetragen. [...]

  • <p>1st Place Science Photo Walk<br />Photo: Lutz Bassin</p>NEWS      01.11.2012

    HZB Science Photowalk – Lutz Bassin’s vacuum chamber photograph submission is the winning entry

    In August 2012, for the first time ever, the Helmholtz Centre Berlin took a group of hobby photographers on a photographic tour of the Centre’s labs and synchrotron radiation source. Nearly 400 submissions by 40 photographers were entered into the competition. From these, the jury has now selected their top ten photographs. [...]

  • With the help of HZB’s x-ray microscope, MAXYMUS, MPIC<br />scientists in Mainz, Germany, recently decoded the methods<br />used by mushrooms and plants to influence Amazon rainforest<br />cloud formation. Organic substances condense on mushroom and<br />plant derived potassium salts resulting in production of<br />aerosol particles. On these, fog droplets form.<br />NEWS      30.10.2012

    Rainforest mushrooms as weather makers

    Whereas in urban areas, soot or dust particles often double as condensation nuclei, in rain-forests, it is mainly organic evaporations from plants, which periodically trigger fog or cloud formation. Now, at HZB’s BESSY II, Max Planck Institute for Chemistry scientists have shown that inorganic salts also play a role in the process. It appears that tiny potas-sium salt particles make up the core of cloud condensation nuclei in the rainforest. These kinds of salts are evaporated by mushrooms and plants as a way of influencing the number of condensation nuclei and, by extension, affecting cloud formation and precipitation over the rainforest. [...]

  • Von links nach rechts: Martin Jermann, Prof. Dr.-Ing. Anke<br />Kaysser-Pyzalla, Cornelia Yzer, Prof. Dr. Ulrich Frei, Prof. Dr. med.<br />Antonia M. Joussen, Dr. Jutta Koch-Unterseher.<br />Foto: Jennifer Bierbaum/HZB

NACHRICHT      15.10.2012

    Festkolloquium anlässlich des 2000. Patienten bei der Augentumortherapie

    Die Protonentherapie von Augentumoren wird in Deutschland nur vom Helmholtz-Zentrum Berlin gemeinsam mit der Charité Berlin angeboten, vor kurzem wurde der 2.000. Patient behandelt. Bei ihrem Grußwort auf dem Festkolloquium am 11. Oktober 2012 würdigte Cornelia Yzer, Berlins neue Senatorin für Wirtschaft, Technologie und Forschung, die erfolgreiche Kooperation zwischen HZB und Charité. Diese Kooperation ist nun unbefristet verlängert, sagte Yzer. Damit werden auch in Zukunft Patientinnen und Patienten von dieser Behandlung profitieren können, die in vielen Fällen die Sehkraft des Auges erhält. [...]

  • Dr. Christiane BeckerNACHRICHT      10.10.2012

    BMBF-Nachwuchsgruppe für Christiane Becker

    Dr. Christiane Becker wird am Helmholtz-Zentrum Berlin (HZB) eine neue BMBF-Nachwuchsgruppe aufbauen, um nano- und mikrostrukturierte Silizium-Bauelemente für Anwendungen in der Photovoltaik und der Photonik zu entwickeln. Unter dem Titel „Die Nano-SIPPE“ hat sie ein detailliertes Arbeitsprogramm aufgestellt, mit dem sie entscheidende Verbesserungen bei der Herstellung neuer optischer Bauelemente aus dünnen, feinst strukturierten Siliziumschichten erreichen will. Das BMBF fördert das Vorhaben im Rahmenprogramm „Werkstoffinnovationen für Industrie und Gesellschaft – WING“ im BMBF-Nachwuchswettbewerb NanoMatFutur in den nächsten vier Jahren mit rund 950.000 Euro. [...]

  • <p>Begeistertes Publikum bei der Herstellung von Stickstoff-Schoko-Eis.</p>NACHRICHT      09.10.2012

    Maus-Türöffnertag am Synchrotron BESSY II

    70 Kinder und noch mehr begleitende Erwachsene kamen am 3. Oktober 2012 zum Maus-Türöffnertag an das Helmholtz Zentrum Berlin am Standort Adlershof, um einen Blick auf die Arbeit der Wissenschaftlerinnen und Wissenschaftler zu werfen.  Anlass war ein Aufruf von der Sendung mit der Maus, am Tag der Deutschen Einheit einen „Türöffnertag“ zu veranstalten: Dabei sollten die Kinder etwas sehen dürfen, das normalerweise nicht für sie zugänglich ist, so wie der Synchrotron Speicherring BESSY II, den eigentlich nur Erwachsene besichtigen können. Den Tag ermöglicht hat Dr. Antje Vollmer, zusammen mit engagierten Mitarbeiterinnen und Mitarbeiterinnen des HZB hat sie ein Programm für die jungen Besucher entwickelt und sie in zwei Schichten durch BESSY II geführt. Mitgemacht haben Maximilian Bauer, Esther Dudzik, Karsten Holldack, Christian Jung, Torsten Leitner, Marcus Lörgen, Atoosa Meseck, Stephanie  Rädel, Olaf Schwarzkopf, Florian Staier, Daniela Theile und Manfred Weiss. Ihnen allen sei herzlich gedankt. [...]

  • <p>Patient w&auml;hrend der Behandlung mit hochenergetischen Protonen</p>NACHRICHT      02.10.2012

    Augentumortherapie: 2000. Patient behandelt

    HZB und Charité laden zum Festkolloquium [...]

  • Magnetic force microscope image of a 10 by 10 micron sample<br />showing the magnetic domains' labyrinthine structure.<br />NEWS      02.10.2012

    X-ray laser FLASH uncovers fast demagnetization process

    With the help of free-electron laser FLASH at the Helmholtz Research Centre DESY, an international team of researchers has recently described a most surprising effect that can result in faster demagnetization in ferromagnetic materials. This effect could be key to the continued miniaturization and acceleration of magnetic storage. Now, Prof. Dr. Stefan Eisebitt of the Helmholtz Zentrum Berlin (HZB) and TU Berlin and his team have published their findings in the current issue of the scientific journal Nature Communications (DOI 10.1038/ ncomms2108). [...]

  • Dr. Matthias Fehr im Analyselabor des Instituts für <br />Silizium-Photovoltaik: Hier untersuchte er mithilfe der <br />Magnetresonanzspektroskopie verschiedene Siliziumproben.NACHRICHT      01.10.2012

    Matthias Fehr forscht ab Oktober als Humboldt-Stipendiat an der Universität von Kalifornien in Santa Barbara

    Der Physiker (E-I1) erhält Feodor-Lynen-Forschungsstipendium der Alexander-von-Humboldt-Stiftung  [...]

  • Solar hydrogen evolution by graphitic carbon nitride/p-type chalcopyrite<br />thin film photo-cathode: It is shown that graphitic carbon nitride films<br />coated on p-type CuGaSe2 thin films can be successfully applied as new<br />photoelectrochemical composite photo-cathode for light induced<br />hydrogen evolution.NEWS      24.09.2012

    From sunlight to hydrogen

    Scientists at the Helmholtz Zentrum Berlin successfully test new hybrid material for use in photoelectrochemical hydrogen production [...]

  • NACHRICHT      20.09.2012

    Freunde der kleinen Maus aufgepasst: Wir laden am "Türöffner-Tag“ zu einer spannenden Reise in die Welt der Physik ein

    am 3. Oktober von 10 bis 13 Uhr [...]

  • NEWS      18.09.2012

    21 summer students from across the world are doing research at the HZB

    HZB's eight-week summer program is popular with students of physics and materials science. As in previous years, this year there was a high demand for the twenty-one available spots in the program. Through September 27, the summer students will be working independently on their individual research projects under the supervision by experienced HZB scientists. The program has a strong international focus; this year, HZB's summer students hail from Columbia, Russia, Italy, Spain, Bulgaria, and Brazil, to name only a few. [...]

  • NEWS      13.09.2012

    New films about Berlin neutron source BER II

    "The neutron researchers" and "Meet the neutrons" are the names of two brand-new HZB films about Berlin neutron source BER II. A third film, a two-minute animated short, answers the most relevant questions regarding the setup and the security issues surrounding the neutron source. [...]

  • NACHRICHT      12.09.2012

    Henning Döscher erhält Marie-Curie-Fellowship der Europäischen Union

    Seit August erforscht er solare Brennstoffe am National Renewable Energy Laboratory (NREL) in den USA [...]

  • <p>Beim Tag der Offenen T&uuml;r k&ouml;nnen Sie die Neutronenquelle BER II <br />besichtigen. Wir beantworten gern Ihre Fragen.</p>NACHRICHT      10.09.2012

    Neutronenquelle BER II in Berlin-Wannsee öffnet am 14. September Türen für Anwohner und Interessierte

    Am Freitag, den 14. September von 14 bis 19 Uhr lädt das Helmholtz-Zentrum Berlin am Standort Wannsee zum diesjährigen Tag der offenen Tür ein. Im Mittelpunkt stehen Besichtigungen und Informationen rund um die Neutronenquelle BER II. Nach den Umbauarbeiten stehen dort nun auch wieder diejenigen Experimentiereinrichtungen offen, die im letzten Jahr nicht zu besichtigen waren.
    Mit Vorträgen und Führungen geben wir Besuchern einen Einblick in die spannende Welt der Forschung mit Neutronen. Außerdem möchten wir ihnen den Aufbau und die Sicherheitsvorkehrungen der Anlage erläutern.Informieren können sich Besucher außerdem über die zentrale Sammelstelle für leicht- und mittelradioaktiven Abfall, die das HZB im Auftrag des Landes Berlin betreibt. Hier finden Sie unser Programm.
    Um Anmeldung auf unserer Webseite wird gebeten.
    Hinweis: Zum Betreten der Einrichtung ist ein gültiger Personalausweis oder Reisepass erforderlich.

  • Die radioeins-Hörerin Anneli W. berichtete nach dem <br />Photo Walk live in der Sendung von ihren Eindrücken.  NACHRICHT      04.09.2012

    Science Photo Walk: Sechzig Hobbyfotografen nahmen die besten Motive in den Fokus

    Für alle Beteiligten war der Science Photo Walk, zu dem das HZB erstmalig Profi- und Amateurfotografen nach Adlershof eingeladen hatte, ein voller Erfolg. Ina Helms, Leiterin der Abteilung Kommunikation, sagt: „Wir wollten das neue Veranstaltungsformat einfach einmal ausprobieren: Wir bieten einen exklusiven Einblick in Labore der Solarenergieforschung und die Anlagen bei BESSY II – und die Fotografen richten ihre Objekte darauf. Bei uns gingen im Vorfeld deutlich mehr Anmeldungen ein, als wir Plätze vergeben konnten“. Allein das zeigte das riesige Interesse an dem Fotowettbewerb. [...]

  • <p> <a href="http://www.helmholtz-berlin.de/pubbin/news_datei?did=4689">&#9654;<strong> Video-Interview</strong> with Alan Tennant (6 min, MP4, 122.6 MB) </a> </p>
<p> <a href="http://www.helmholtz-berlin.de/pubbin/news_datei?did=4692">&#9654;<strong> Video-Interview</strong> with Alan Tennant (11 min, MP4, 206.9 MB) </a> </p>NEWS      03.09.2012

    Prof. Alan Tennant has won the Europhysics Prize, Europe’s foremost prize for condensed matter physics

    Tennant was honored for the experimental observation of magnetic monopoles using neutron scattering at the Berlin research reactor BER II. He shares the 2012 prize with 5 other scientists “for the prediction and experimental observation of magnetic monopoles in spin ice.” The price is endowed with 12.000 Euro and will be presented at the forthcoming EPS CMD General Conference in Edinburgh on 5th September. It is awarded once every two years for a recent work in the area of physics of condensed matter which, in the opinion of the Society's selection committee, represents scientific excellence. [...]

  • NEWS      30.08.2012

    Dr. Stephan Werner (F-12) is recipient of Werner Meyer-Ilse Memorial Award

    High-efficiency, three-dimensional diffractive lenses for x-rays experimentally realized for first time ever [...]

  • HZB-Wissenschaftler Dr. Christian Schüßler-LangeheineNACHRICHT      29.08.2012

    Tiefer Röntgenblick zeigt: Supraleiter sind komplizierter als gedacht - Rätselhaft verschwindende Streifenstruktur

    Keramische Supraleiter sind komplizierter als gedacht. Das zeigt eine Untersuchung sogenannter Lanthan-Cuprate mit den Röntgenquellen BESSY II am Helmholtz-Zentrum Berlin (HZB) und DORIS III bei DESY in Hamburg. Die elektrischen Strukturen, die sich in dem Material ausbilden, können demnach in der Nähe der Oberfläche ganz anders sein als in der Tiefe. Dieses Wissen ist wichtig für das Verständnis der komplizierten Vorgänge in den widerstandsfreien Stromleitern und kann der Konstruktion neuer Supraleiter mit maßgeschneiderten Eigenschaften helfen. Allerdings bedeutet sie auch, dass eine Reihe von Untersuchungen unter Umständen ergänzt werden müssen, wie das internationale Team um HZB-Forscher Christian Schüßler-Langeheine im Fachjournal "Nature Communications" berichtet. [...]

  • NEWS      24.08.2012

    Green light for photocathodes – BMBF funds joint German-Russian collaboration on the physics of photocathodes for high brightness electron beams (PCHB)

    The photocathode electron injector is a significant enabling concept for light sources based on the Energy Recovery Linac (ERL) and Free Electron Lasers. Successful operation of such sources require photocathodes with reliable, uniform and long lifetime high quantum efficiency, low thermal emittance and low dark current. The BMBF funded project will investigate options for cathodes which fulfill the requirements asked for and uncover correlations between cathode preparation and electron beam parameters. [...]

  • <p>Prof. Anke Kaysser-Pyzalla und Prof. Peter Andr&eacute; Alt haben<br />das Band durchgeschnitten, das Labor ist offen.<br />Foto: HZB</p>NACHRICHT      17.08.2012

    Neues Labor von Helmholtz-Zentrum Berlin und Freier Universität Berlin eröffnet

    Flüssigkeiten und Materialien in Lösung mit modernsten Methoden durchdringen [...]

  • Brennstoffzellen untersuchen:Das Bild zeigt ein <br />Neutronen-Tomogramm einer Brennstoffzelle. <br />Wasser und Dichtungsmaterialsind rot und <br />gelb eingefärbt.NACHRICHT      10.08.2012

    Technologievorsprung für die Industrie: HZB bietet Firmen einzigartige Methoden an zwei Großforschungsanlagen

    Einladung zum Industrietag am 18. Oktober 2012 [...]

  • NACHRICHT      10.08.2012

    Materialforschung mit modernsten Methoden

    Helmholtz-Zentrum Berlin und Freie Universität Berlin eröffnen am 17. August neues Labor zur Erforschung von Flüssigkeiten und Materialien in Lösung [...]

  • NACHRICHT      07.08.2012

    Einladung zum Science Photo Walk „Augenblicke“

    Amateurfotografen richten ihre Objektive auf die Wissenschaft [...]

  • <p>Dr. Bella Lake head of Department Quantum Phenomena<br />in Novel Materials</p>NEWS      31.07.2012

    Bella Lake has accepted the call to professorship at TU Berlin

    The joint appointment procedure of HZB and Technische Universität Berlin is concluded: Bella Lake, head of the department “Quantum Phenomena in New Materials” has recently accepted the call to a W2 professorship. The call follows from the junior professorship she had obtained together with the head of the Helmholtz Young Investigator Group in August 2006 at TU Berlin. With her team of six scientists now, the British scientist is conducting highly successful research on quantum magnetism and high-temperature superconductors. [...]

  • <p>University of Potsdam at Neues Palais<br />Photo: Wikipedia</p>NEWS      24.07.2012

    Virtual Institute „Dynamic pathways in multidimensional landscapes“ invites for Scientific Kick-Off and Summer School

    From 6th to 10th August 2012, the speaker of the Virtual Institute (VI), Prof. Dr. Alexander Föhlisch, invites associated members of the national and international partners as well as interested colleagues and students to come to Potsdam for the Scientific Kick-Off and Summer school. [...]

  • NEWS      12.07.2012

    Researchers find spins acting like real bar magnets in a new material

    An international team of researchers from Switzerland, Great Britain and Germany has discovered an excellent new material for studying the behaviour of spins. The researchers have shown that the spins in the colourless salt of chemical formula LiErF4 behave like real bar magnets. They also managed to switch on and off the magnetic properties of the material using quantum mechanics. HZB scientists supported the research team from the Laboratory for Quantum Magnetism (Switzerland) and the London Centre for Nanotechnology on their measurements. The results are published in the journal Science (DOI: 10.1126/science.1221878). [...]

  • Zinc oxide nano-rods as anti-reflective coating on a CIGSe solar cell.<br />©HZB
NEWS      09.07.2012

    European Union allocates 10 million Euros to thin film solar cell project

    European research consortium's German partners to include Berlin's Helmholtz Centre and Free University [...]

  • Metal ions in solution can be examined using soft X-ray<br />radiation. In addition to metal ions, the free fluid stream<br />in the vacuum also contains oxygen, which, following X-ray<br />irradiation, begins to glow, ultimately affecting metal ion<br /> absorption. Researchers can now calculate the metal ions’<br /> absorptive strength and make inferences regarding the<br />ions' electronic structures.<br />
Fig: HZB
NEWS      06.07.2012

    Aqueous iron interacts as strong as solid iron

    Advances spectroscopy research: HZB scientists come up with new method for examining the structure of metal ions-complexes in solution [...]

  • <p>Has accepted the joint appointment: Rutger Schlatmann, <br />head of PVcomB, becomes professor at the <br />Hochschule f&uuml;r Technik und Wirtschaft Berlin</p>NEWS      04.07.2012

    Rutger Schlatmann becomes professor of “solar technology” at Hochschule für Technik und Wirtschaft Berlin - University of Applied Sciences

    Rutger Schlatmann has been headed the Competence Centre Thin-Film- and Nanotechnology for Photovoltaics Berlin (PVcomB) since 2008. Since its very inception, this Berlin establishment has been an instrumental link between publicly financed photovoltaic research and the solar industry. PVcomB is jointly funded by Helmholtz-Zentrum Berlin and the universities and institutes of Berlin. With this felicitous collaboration, the partners have been pursuing one goal for the last four years with success: they have been taking the results of pure research and turning them into practical technologies ready for real-world use. With the joint appointment of Rutger Schlatmann, this collaboration will now be substantially expanded.  [...]

  • Dr. Roel van de Krol is the scientific manager of the <br /> new institute "Solar Fuels" at HZBNEWS      04.07.2012

    HZB reinforces energy research with a new Institute for “Solar Fuels”

    Dr. Roel van de Krol becomes scientific manager on 1 July [...]

  • NACHRICHT      03.07.2012

    Mit zwei neuen Virtuellen-Instituten verstärkt das HZB die Zusammenarbeit mit den Universitäten

    Dünnschichtsolarzellen und topologische Quantenphasen – ein Kernthema auf dem Weg zum Quantencomputer - werden nun im Verbund erforscht [...]

  • <p>Fig.: Spectra of one-third atomic layer iron on bismuth selenide.<br />Bisecting lines indicate the material's surface state. The figure's top<br />and bottom portions are symmetric to each other due to time reversal<br />symmetry, &gt;which also protects the point of intersection.<br /></p>NEWS      28.06.2012

    In topological insulator debate, scientists document mate-rials' high-level surface state stability

    Following scientists' announcement, new class of materials stakes its claim to holding the key to computer technology's future. [...]

  • <p>The colloid model that was used in the research: individual small<br />particles (size: approx. 150 nm) suspended in water. The solid core<br />consists of the plastic polystyrene, the surrounding shell of<br />a thermosensitive network made from poly(N-isopropylamide).<br />Lowering the temperature results in a volume increase of<br />the individual particles - and thereby of their packing density.<br />Photo: HZB/M. Siebenb&uuml;rger</p>NEWS      18.06.2012

    Focus on materials creep-fatigue: colloid particle as metal atom model

    Soft matter turns out to be the ideal basis for investigations of technical materials aging: scientists develop new physical model.

    Together, materials scientists at the Helmholtz Centre Berlin for Materials and Energy (HZB), their colleagues at Germany’s Constance University, and fellow researchers at the German Aerospace Centre (DLR) have confirmed that empirical regularities that apply in metallurgical physics also hold true for colloidal suspensions. Consequently, experimental results obtained from these substances can now be reliably compared to theoretical precepts. This makes colloids excellent test substances in the lab that enable scientists to zoom in on creep processes like the ones that occur in strained technical structures. The scientists’ findings are now being published in the scientific journal Physical Review Letters (DOI: 10.1103/PhysRevLett.108.255701). [...]

  • Dominic (right) receives the IEEE PVSC Award <br />from the Conference Chair B.J. Stanberry (left).NEWS      15.06.2012

    Dominic Gerlach receives IEEE PVSC Student Award

    Dominic Gerlach was awarded the Student Award of the 38th IEEE Photovoltaic Specialists Conference held in Austin, Texas last week. The IEEE PVSC is the premier technical conference in the USA, covering all aspects of PV technology from basic material science to installed system performance and bringing together PV scientists and engineers from throughout the PV industry. [...]

  • <p>PVcomB sets sputter systems from Leybold Optics in operation<br />From right to left: Dr. Bernd Stannowski and Dr. Sven Ring,<br />PVcomB, Berlin<br /></p>NEWS      14.06.2012

    PVcomB sets sputter system from Leybold Optics in operation

    Berlin competence centre for photovoltaics commences full operation with small modules [...]

  • Offiziell überreicht: Das HZB darf seit Dezember 2011 <br />das Zertifikat "berufundfamilie" tragenNACHRICHT      13.06.2012

    Familienfreundlich: Helmholtz-Zentrum Berlin bekommt Zertifikat „berufundfamilie“ offiziell übergeben

    Seit Dezember 2011 darf das HZB das Zertifikat „berufundfamilie“ für seine familienfreundliche Ausrichtung tragen. Nun bekam es die Urkunde offiziell von Peter Hintze, dem Staatssekretär beim Bundeswirtschaftsministerium, und Dr. Hermann Kues, dem Staatssekretär im Bundesfamilienministerium, bei einer Festveranstaltung überreicht. Beide Ministerien tragen die Schirmherrschaft. [...]

  • Die Postersessions waren ein wichtiger Bestandteil <br />der Symposien auf dem E-MRS Spring Meeting 2012<br />NACHRICHT      06.06.2012

    Preis und Preis gesellt sich gern: Simon Kirner und Christiane Stephan mit Posterpreisen auf der E-MRS ausgezeichnet

    Auf der renommierten Frühjahrskonferenz der Europäischen Materialforschungsgesellschaft (E-MRS) wurden im Mai gleich zwei HZB-Nachwuchswissenschaftler für ihre Posterbeiträge ausgezeichnet. Beide Forscher beschäftigten sich mit verschiedenen Aspekten von Dünnschichtsolarzellen. Simon Kirner, Doktorand am PVcomB, zeigte in seinem Poster, wie man Tandemsolarzellen aus amorphen und kristallen Silizium mithilfe einer Zwischenschicht aus Silizium-Oxid optimieren kann. Dr. Christiane Stephan aus der Abteilung Kristallographie untersuchte Defekte in der Kristallstruktur von Cu(In,Ga)Se2, dem Absorbermaterial in hocheffizienten Chalkopyrit-Dünnschichtsolarzellen. An dem E-MRS Spring Meeting in Straßburg, die mit großer Industriebeteiligung organisiert wurde, nahmen etwa 2500 Teilnehmer teil; für die wissenschaftlichen Diskussionen gab es 25 Symposien zu verschiedenen Themenbereichen. [...]

  • NACHRICHT      05.06.2012

    HZB an Helmholtz-Plattform für Detektortechnologien und Detektorsysteme beteiligt

    Die Helmholtz-Gemeinschaft initiiert eine Plattform, um Detektortechnologien und Detektorsysteme weiter zu entwickeln. Ziel der Plattform –  die als Portfoliothema gefördert wird – ist es, Technologien zum Aufbau neuartiger Detektoren für Photonen, Neutronen sowie geladene Teilchen weiter zu entwickeln, die Datenübertragung und -auswertung zu optimieren und exemplarische Detektorprototypen zu entwerfen und zu bauen. Ein weiteres wichtiges Ziel ist die Vernetzung der Detektorlabore. Kleine Zentren können so an kostspieligen technologischen Entwicklungen teilhaben. Das HZB ist an der Plattform beteiligt und entwickelt Systeme für die Detektion von Neutronen, Photonen sowie intelligente, programmierbare Hardware für die Datenerfassung. [...]

  • © Museum of Cultural History, University of Oslo /<br />Eirik Irgens Johnsen<br />The wood fibres of the richly decorated ceremonial wagon<br />are disintegrated because of the preservation method.NEWS      05.06.2012

    Monumental effort to save the threatened Viking treasures of Oseberg

    Norwegian conservators are conducting tests at HZB to halt the degradation of one of the most important cultural assets from the Viking Age [...]

  • Großer Andrang am HZB bei der <br />Langen Nacht der WissenschaftenNACHRICHT      04.06.2012

    4.500 Besucher besichtigten das HZB bei der Langen Nacht der Wissenschaften

    Es war nicht gerade ein lauschiger Juni-Abend. Dennoch ließen sich zehntausende Menschen nicht die Gelegenheit entgehen, eine Nacht lang Wissen zu tanken und die Forschungseinrichtungen in Berlin und Potsdam zu besichtigen. Der Elektronenspeicherring BESSY II war mit 3.500 Besuchern eine der Hauptattraktionen am Wissenschaftsstandort in Adlershof. Auch die Präsentationen des PVcomB und des Instituts für Silizium-Photovoltaik waren mit 1000 Besuchern sehr gut besucht. [...]

  • Experimentieren mit schönster Kulisse: <br />Die Sommerschule ISUenergy vermittelt rund zwei Wochen lang <br />die Grundlagen der erneuerbaren Energien.NACHRICHT      30.05.2012

    Sommerschule zu Erneuerbaren Energien in der Schweiz: Noch können Bewerbungen eingereicht werden

    Die Internationale Sommer-Universität zu Erneuerbaren Energien, ISUenergy 2012, findet vom 19.08. bis zum 31.08.2012 im Schweizerischen Falera statt. Master- und Diplomstudenten sowie Doktoranden, die teilnehmen möchten, können sich noch in den nächsten Wochen bewerben. Auf die Teilnehmer wartet ein abwechslungsreiches Programm aus Vorträgen und praktischen Übungen. Weitere Informationen zum Programm und zur Anmeldung für die Sommerschule finden Sie auf unserer Website. [...]

  • NEWS      24.05.2012

    Announcement - International Summer School on Photovoltaics (Quantsol)

    The International Summer School on Photovoltaics and New Concepts of Quantum Solar Energy Conversion takes place from 9th to 16th September 2012 in Hirschegg, Kleinwalsertal, Austria. Young postdocs, PhD students, and master students can apply by 10th June 2012.Details of the school’s program can be found on the website. [...]

  • NEWS      23.04.2012

    More than 300 scientists gathered in Berlin to define future ESS science

    In total, ideas from more than 1000 scientists have been fed into the project. [...]

  • NACHRICHT      19.04.2012

    “Das Rennen ist noch nicht gelaufen“

    Photovoltaics Thin-Film Week: Forschung als Chance für Solarwirtschaft [...]

  • Künsterische Darstellung der Aufspaltung eines Elektrons<br />NACHRICHT      18.04.2012

    Physiker beobachten, wie ein Elektron im Festkörper in neuartige Quasiteilchen zerfällt

    Physiker eines internationalen Forschungsteams haben erstmals beobachtet, wie sich ein Elektron in zwei voneinander getrennte Teile aufspaltet, die jeweils eine bestimmte Eigenschaft des Elektrons tragen: Das sogenannte «Spinon» trägt dann den Spin des Elektrons, also seine Eigenrotation. Diese lässt das Elektron zu einer winzigen Kompassnadel werden. Das «Orbiton» ist der Träger des orbitalen Moments – das ist die Bewegung um den Atomkern. Diese neu hergestellten Teilchen können das Material, in dem sie erzeugt wurden, nicht verlassen. Justine Schlappa vom Helmholtz-Zentrum Berlin hat diese Ergebnisse jetzt zusammen mit ihren Kollegen in der Fachzeitschrift Nature veröffentlicht (DOI: 10.1038/nature10974). Die Ergebnisse wurden an der Synchrotronquelle SLS des schweizerischen Paul Scherrer Instituts erzielt, wo Justine Schlappa zu Beginn des Projekts beschäftigt war. [...]

  • Die Preisübergabe fand während der Frühjahrstagung <br />der DPG in Berlin statt<br />Foto: DPG/RöhlNACHRICHT      17.04.2012

    Henning Döscher mit SKM Dissertationspreis der Deutschen Physikalischen Gesellschaft ausgezeichnet

    Auf der Frühjahrstagung der Deutschen Physikalischen Gesellschaft bekam Henning Döscher am 27. März den Dissertationspreis der Sektion Kondensierte Materie (SKM) verliehen. Neben seiner Dissertation floss auch sein auf dem Symposium der DPG gehaltener Vortrag in die Bewertung der Jury ein. Von den fünf nominierten Kandidaten wurden anschließend zwei Wissenschaftler beim Festakt der Deutschen Physikalischen Gesellschaft mit dem Dissertationspreis geehrt. Während der Festveranstaltung, bei der unter anderem die Max-Planck-Medaille und die Ehrenmitgliedschaften verliehen wurden, gratulierte auch die Bundesforschungsministerin, Annette Schavan, Henning Döscher zu seiner Arbeit. [...]

  • <p>Pressesprecherin Dr. Ina Helms und die Autorin Franziska Rott<br />erhielten den idw-Preis f&uuml;r Wissenschaftskommunikation<br />f&uuml;r die beste Pressemitteilung des Jahres aus der Hand von <br />idw-Vorstandsmitglied Dr. Markus Zanner, Kanzler der <br />Universit&auml;t Bayreuth (v. l. n. r.).<br />Foto: idw</p>NACHRICHT      02.04.2012

    HZB-Pressestelle wird erneut für hervorragende Wissenschaftskommunikation ausgezeichnet

    Mit dem "schnellsten Film der Welt" gewann die Pressestelle des HZB nach 2010 zum zweiten Mal den idw-Preis für Wissenschaftskommunikation. Der Informationsdienst Wissenschaft (idw) vergibt diese Auszeichnung jährlich für die beste Pressemitteilung des vorangegangenen Jahres. Die Jury, bestehend aus Journalisten und Wissenschaftlern, gab die diesjährigen Preisträger am 29. März in Essen auf der Jahresversammlung des idw bekannt. Überreicht wurde der Preis an die Autorin, Franziska Rott, und an die Leiterin der Kommunikationsabteilung, Ina Helms. [...]

  • NEWS      28.03.2012

    Scientific operations resume at Berlin-based neutron source

    After a roughly one-and-a-half-year hiatus, scientific operations have resumed at BER II, the Berlin-based neutron source.  In October 2010, BER II was temporarily shut down in order to allow time for extensive retrofitting and maintenance work.  The work included replacement of a beamline used to conduct neutrons from the reactor core into a device known as a neutron guide.  Similar to optical fibers conducting light, neutron guides are used to transmit neutrons to scientific experimental stations. [...]

  • <p>In CIS/CIGSe-Solarzellen ist die Dichte an Korngrenzen hoch.<br />HZB-Wissenschaftler konnten mit bislang unerreichter Aufl&ouml;sung<br />Atomlagen unmittelbar an den Grenzfl&auml;chen analysieren.<br />Foto: HZB</p>NACHRICHT      26.03.2012

    Atomwanderung im Grenzgebiet: Mit bislang unerreichter Auflösung analysieren Forscher Korngrenzen in Dünnschichtsolarzellen

    Dünnschichtsolarzellen werden zukünftig einen großen Anteil am Photovoltaik-Markt haben, davon sind viele Experten überzeugt. Die Zellen aus Kupfer-Indium-Gallium-Selenid oder -Sulfid (CIGSe, CIS) unterscheiden sich in vielen Dingen von der klassischen Siliziumsolarzelle. So tragen in kristallinen Siliziumsolarzellen Korngrenzen substantiell zum Stromverlust bei. Mit CIGSe-Absorbern werden dagegen Wirkungsgrade von mehr als 20 Prozent erreicht, obwohl die polykristallinen Dünnschicht-Materialien eine hohe Dichte an Korngrenzen aufweisen. Woran das liegt, ist bislang noch ungeklärt. [...]

  • <p>A pictorial view of the coupling mechanism between hard and<br />soft ferrimagnetic alloys with perpendicular magnetization.<br /></p>NEWS      06.03.2012

    Resetting the future of MRAM

    Helmholtz-Zentrum Berlin developed a magnetic valve that novel electronic devices can be realistic [...]

  • NACHRICHT      02.03.2012

    Energie-Allianz Berlin-Potsdam-Jülich: Forschung verspricht völlig neue Materialien für die Photovoltaik

    Das Helmholtz-Zentrum Berlin und das Forschungszentrum Jülich bilden zusammen mit der Humboldt-Universität zu Berlin, der Universität Potsdam und der Freien Universität Berlin eine der drei neuen Energie-Allianzen, die von der Helmholtz-Gemeinschaft ins Leben gerufen wurden. Ziel dieser Energie-Allianz mit dem Namen „Anorganisch/organische Hybrid-Solarzellen und -Techniken für die Photovoltaik“ ist es, den drängenden Forschungsbedarf zum raschen Umbau der Energieversorgung gezielt zu decken. Die Vorhaben werden durch den Impuls- und Vernetzungsfonds der Helmholtz-Gemeinschaft für drei Jahre gefördert, wobei die universitären Partner zusätzlich eigene Mittel einbringen. Eine Fortsetzung der Forschung auch über die drei Jahre hinaus ist geplant. [...]

  • <p>Red light from a laser pointer is converted into higher-energy yellow<br />light as it passes through the liquid photochemical upconverter.<br />Source: University of Sydney, Australia</p>NEWS      29.02.2012

    Photochemical Turbo Power for Solar Cells

    How organic molecules make yellow light from red. [...]

  • In ein Messe- und Ausstellungsgelände verwandeln wird sich<br />am 5. und 6. Juni der Park des Schlosses Bellevue.<br />Bundespräsidialamt und DBU veranstalten zum vierten Mal die<br />"Woche der Umwelt". Auch das HZB ist dabei.NACHRICHT      28.02.2012

    Vorfahren zum Schloss Bellevue: Das HZB darf sich auf der Woche der Umwelt präsentieren

    Letzte Woche bekam das HZB die offizielle Zusage, dass es bei der Leistungsschau für umweltfreundliche Technologien vor dem Schloss des Bundespräsidenten dabei sein wird. Die Veranstaltung findet am 5. und 6. Juni statt. Etwa 550 interessierte Unternehmen und Forschungseinrichtungen hatten Bewerbungen bei den Initiatoren, dem Bundespräsidialamt und Deutschen Bundesstiftung Umwelt (DBU), eingereicht, um ausstellen zu dürfen. 200 Anträge davon wurden nun ausgewählt. [...]

  • A chalcopyrite thin-layer solar-cell at the sun-simulator test stand.<br />©HZBNEWS      27.02.2012

    ILGAR achieved efficiency record

    HZB-scientists have received simultaneous confirmation of two records in efficiency levels for CIS thin film solar-modules. [...]

  • <p>Comb-shaped, interdigitated metal contacts on the side facing<br />away from the sun of back-contact silicon heterojunction solar<br />cells. Pictured are several test cells on a single silicon wafer.<br />Image source: HZB/Jan Haschke</p>NEWS      21.02.2012

    Back-contact heterojunction solar cell by HZB and ISFH achieves record efficiency

    Independent testing lab confirms 20.2 percent [...]

  • Phoenex-Apparatus<br />NEWS      10.02.2012

    Under cover of graphene

    Researchers at Helmholtz-Zentrum Berlin have developed a method to conserve electronic surface states using graphene. [...]

  • Blick auf Experimentiereinrichtungen am ForschungsreaktorNACHRICHT      09.02.2012

    Keine Abschaltpläne für Forschungsreaktor

    Anders als der Tagesspiegel heute berichtet, gibt es keine Abschaltpläne für den Forschungsreaktor in Wannsee. Ursache dieser missverständlichen Meldung ist eine unzulässige Umkehr der Aussagen der Sprecherin. Die richtige Aussage ist: "Die Neutronenquelle wird noch mindestens 15 Jahre laufen." Daraus den Umkehrschluss zu ziehen, sie würde nach 15 Jahren abgeschaltet, ist eine falsche Interpretation des Zitats. [...]

  • Schema eines organischen elektronischen Bauteils mit Dotier-Molekülen<br />(braune Einschlüsse) im aktiven Film (grün).<br />Rechts die Vergrößerung eines molekularen Ladungstransfer-Komplexes<br />und eines Hybrid-Orbitals.<br />Bildquelle: HU-BerlinNACHRICHT      01.02.2012

    Wie Plastik durch fremde Moleküle leitfähig wird - Mechanismen bei der Dotierung organischer Halbleiter geklärt

    Das Dotieren anorganischer Halbleiter stellt die zentrale Grundlage der modernen Elektronik dar. Dabei werden Halbleitermaterialien, wie beispielsweise Silizium, kontrolliert mit Fremdatomen verunreinigt, wodurch sich die Leitfähigkeit präzise einstellen lässt. Seit einigen Jahren wird die sogenannte organische Elektronik als zukunftsweisende Technologie entwickelt. Hier werden organische Moleküle und Polymere als Halbleiter verwendet. Wissenschaftlerinnen und Wissenschaftler der Humboldt-Universität zu Berlin (HU) und des Helmholtz-Zentrum Berlin (HZB) konnten nun in einer Kooperation erklären, welcher Mechanismus das Dotieren organischer Halbleiter bestimmt. Damit soll es nun gelingen, neue verbesserte Dotier-Moleküle zu entwickeln. [...]

  • <p>Therapieraum f&uuml;r die Protonentherapie am Standort Wannsee. <br />In diesem Raum werden die Patienten f&uuml;r die Protonentherapie <br />vorbereitet und sp&auml;ter bestrahlt.</p>NACHRICHT      05.01.2012

    HZB und Charité Berlin unterschreiben unbefristeten Vertrag zur Fortsetzung der Protonentherapie

    Die Charité Berlin und das HZB behandeln seit 1998 Patienten, die an einem Augentumor erkrankt sind, mit Protonenstrahlen. 2007 hatte die Charité die Federführung für diese spezielle Therapie übernommen, die für Patienten erhebliche Vorteile mit sich bringt. Kürzlich wurde der Vertrag zur Fortsetzung der Protonentherapie und zum Betrieb der dazu notwendigen Beschleunigeranlage von beiden Seiten mit unbegrenzter Laufzeit unterzeichnet. Es ist eine gute Nachricht für die 500 bis 600 betroffenen Menschen, die jährlich in Deutschland an einem malignen Aderhautmelanom erkranken. [...]

  • NACHRICHT      20.12.2011

    Neues Helmholtz Virtuelles Institut feierlich eröffnet

    Mit einem Festakt an der Freien Universität Berlin wurde am Montag, dem 19. Dezember, ein neues Helmholtz Virtuelles Institut (HVI) eröffnet, an dem neben dem federführenden Helmholtz-Zentrum Geesthacht in Teltow (HZG) und der Freien Universität Berlin auch das Helmholtz-Zentrum Berlin (HZB) einer der Kernpartner ist. [...]

  • <p>The topping-out ceremony and relaying of the foundation<br />stone for the NEAT building were celebrated at the beginning<br />of December</p>NEWS      14.12.2011

    Important Milestones Celebrated for the Neutron Instrument NEAT II

    Around 100 guests attended the NEAT building’s topping-out ceremony / The experimental capabilities at NEAT II were discussed among other topics at the Workshop on Neutron Spectroscopy in the Terahertz Range [...]

  • NEWS      13.12.2011

    HZB entitled to carry the certificate “Job and Family” from the non-profit Hertie Foundation

    HZB intends to become more family-friendly and help employees balance work and family. Since May 2011, HZB has been under the scrutiny of the “Job and Family” audit of the non-profit Hertie Foundation. External advisors have been accompanying the process, working with those involved in-house to find solutions to permanently improve family friendliness. Once management agreed on objectives, the Foundation issued the “Job and Family” certificate at the beginning of December. HZB is now entitled to carry this certificate and include the logo on job ads, on the website or on brochures, for example. [...]

  • <p>This picture schematically shows the studied titanium dioxide rods<br />illuminated by X-rays of various photon energies through a capillary<br />condenser. A high-resolution lens &ndash; not shown here &ndash; then forms<br />an image of the objects.<br />Source: HZB</p>NEWS      07.12.2011

    Breakthrough in X-Ray Nanospectroscopy

    HZB researchers achieve X-ray spectroscopy at nanoscale spatial resolution [...]

  • <p>Depiction of catalyst nanoparticles: The particles (coloured)<br />adhere to a substrate (grey). They are imaged by electron<br />tomography. For imaging, the data are processed using novel<br />algorithms.</p>NEWS      18.11.2011

    Three-Dimensional Characterization of Catalyst Nanoparticles

    Catalysts will forever be a part of modern technology. They are crucial to industrial chemical processes, are fundamental to low-emission cars and will be essential for energy production inside next generation fuel cells. In a cooperative between Helmholtz Zentrum Berlin (HZB) and the Federal Institute for Materials Research and Testing (BAM), scientists have produced the first three-dimensional representations of ruthenium catalyst particles only two nanometres in diameter using electron tomography. [...]

  • Synchrotron Radiation Source BESSY IINEWS      11.11.2011

    Tiny, Tailored Magnets - CeNIDE Researchers Publish in “Nature Communications”

    Nanomagnets are used in many places nowadays, from medicine to data storage. Sometimes they have to be strong and and sometimes they have to be weak. Researchers from the Center for Nanointegration (CeNIDE) at University of Duisburg-Essen (UDE) have found out just how to produce these tiny magnets with highly specific properties, and have published their results. [...]

  • NEWS      01.11.2011

    Shedding Light on Luminescence - Scientists at HZB reveal the structure of a designer protein

    Fluorescent proteins are important investigative tools in the biosciences: Coupled to other proteins, they help us to study the processes of life inside cells and organisms at the molecular level. Fluorescent proteins are made to light up at specific target sites or to become dark again where necessary. In other words, they are switched on and off like light bulbs. Now, for the first time, at Helmholtz-Zentrum Berlin (HZB) scientists have studied the structural characteristics involved in fluorescence on one single protein crystal when switched on and when switched off. Their results are published in Nature Biotechnology (doi:10.1038/nbt.1952). [...]

  • <p>auf dem Weg zum Labor; vorne li: Shoichiro Toyoda</p>NACHRICHT      24.10.2011

    BESSY II besitzt magnetische Anziehungskraft

    Ehrenvorsitzender des weltgrößten Automobilherstellers besucht das HZB [...]

  • <p>Mit dieser Aufnahme vom BioREF gewann Martin Kreuzer <br />den ersten Preis</p>NACHRICHT      20.10.2011

    Zwei HZB-Bilder gewinnen Fotowettbewerb des europäischen Neutronennetzwerks NMI3

    Martin Kreuzer reichte ein Foto vom Neutronen-Instrument BioREF mit einer ungewöhnlichen Perspektive ein –  und gewann damit prompt den ersten Preis beim Fotowettbewerb von NMI3. Sein Foto wird den Titel der Novemberausgabe des Magazins Inside NMI3 schmücken. Den zweiten Platz hat die Jury an drei Fotografen vergeben. Einer der zweiten Plätze ging an Marcus Trapp, der ebenfalls ein Foto vom BioREF einreichte. Beide Preisträger sind Mitarbeiter der Ruprecht-Karls-Universität Heidelberg und als Kooperationspartner des Projekts BioRef regelmäßige Nutzer am BER II. [...]

  • NEWS      19.10.2011

    The large-scale project EMIL (Energy Materials In-situ Laboratory Berlin) will create new opportunities for researching energy materials by the beginning of 2015

    Helmholtz Zentrum Berlin and the Max Planck Society are going to build a new, dedicated X-ray beamline together at the synchrotron source BESSY II, which will be used for analysing materials for renewable energy generation. The new large-scale project has been dubbed EMIL (a common name in Berlin, but which also stands for Energy Materials In-situ Laboratory Berlin) and includes, among other things, the major project already announced under the name of SISSY (Solar Energy Materials In-Situ Spectroscopy at the Synchrotron). The assessment of EMIL in September 2011, by an external committee of experts engaged by the scientific advisory board, went very well and the experts endorsed the EMIL project "enthusiastically". The supervisory board of HZB will give the go-ahead for construction of EMIL in two months. [...]

  • Mikroskopaufnahme einer Schicht aus Kupfer-Indium-Sulfid (CIS)NACHRICHT      17.10.2011

    Messmethoden im Vergleich: Wie dünne Schichten für Solarzellen am besten untersucht werden

    Alles Gute ist nie beisammen. In der Welt komplexer Geräte gilt dies in besonderem Maße. Will man beispielsweise einen neuen Fernseher oder ein Smartphone kaufen, nutzen deshalb viele Konsumenten vergleichende Bewertungen wie zum Beispiel von Stiftung Warentest. Sie helfen bei der Abwägung: worin unterscheiden sich die Geräte, was können sie, welche Funktionen sind besonders wichtig, worauf kann man möglicherweise verzichten. Bei der Analyse von dünnen Solarzellen-Schichten stehen Wissenschaft und Industrie vor einem ähnlichen Problem. [...]

  • <p>Schematische Darstellung eines Wassermolek&uuml;ls,<br />welches von Acetonitrilmolek&uuml;len umgeben ist.</p>NACHRICHT      27.09.2011

    Ein Sensor für Wasserstoffbrückenbindungen

    Wissenschafter des Helmholtz-Zentrum Berlin (HZB) haben einen Sensor für die Wasserstoffbrückenbindungen in flüssigem Wasser gefunden. In Röntgenspektren fanden sie einen Peak, der empfindlich auf das Brechen von Wasserstoffbrücken reagiert. Sie publizieren die Ergebnisse in der online-Ausgabe der Zeitschrift Angewandte Chemie (DOI: 10.1002/anie.201104161). [...]

  • Dr. Justine SchlappaNEWS      19.09.2011

    Oxygen: Bond breaking in a jumpy way

    HZB is involved in researching quantum beating, which expands our knowledge on the creation and destruction of chemical bonds. [...]

  • Krankhafte Strukturveränderungen in einem Dinosaurierknochen<br />sichtbar gemacht mit Synchrotron-Holotomografie<br />NACHRICHT      13.09.2011

    Erster Nachweis für Viren in der Erdgeschichte: Paget-Krankheit bei Dinosaurieren entdeckt

    Den Paläontologen Florian Witzmann und Oliver Hampe vom Museum für Naturkunde Berlin gelang in Kooperation mit Wissenschaftlern der Charité und des Helmholtz-Zentrums Berlin für Materialien und Energie eine aufsehenerregende Entdeckung: An einem 150 Millionen Jahre alten Wirbel des Dysalotosaurus lettowvorbecki konnten sie den bisher ältesten Nachweis von Viren erbringen. Der Pflanzen fressende Dinosaurier aus Tendaguru/Tansania hatte zu Lebzeiten eine Paget genannte Knochenkrankheit, die durch masernähnliche Viren ausgelöst wird und bislang nur von Menschen und Primaten bekannt ist. Die Wissenschaftler berichten darüber in der jüngsten Ausgabe der Zeitschrift Current Biology. [...]

  • Prof. Dr. Emad Flear Aziz BekhitNACHRICHT      08.09.2011

    Der Traum von der Zusammenarbeit wird wahr - Berliner Wissenschaftler mit ERC Starting Grant ausgezeichnet

    Der Physiker Prof. Dr. Emad Flear Aziz, Wissenschaftler am Helmholtz-Zentrum Berlin (HZB) und an der Freien Universität Berlin, wird mit einem „ERC Starting Grant“ des Europäischen Forschungsrates ausgezeichnet. Dieser umfasst eine Förderung von 1,5 Millionen Euro. Der Nachwuchswissenschaftler kann damit in den kommenden fünf Jahren die Untersuchung von funktionalen Materialien voranbringen. Aziz‘ Forschungsthema lautet „Structure and Dynamics of Porphyrin-Based Materials in Solution vs. Interfaces”. Ihm ist es gelungen, den ersten ERC Starting Grant für das HZB einzuwerben. Über den ERC-Grant hinaus fördert die Helmholtz-Gemeinschaft Aziz´ Forschung mit weiteren 250.000 Euro. [...]

  • NACHRICHT      07.09.2011

    PVcomB kooperiert im Rahmen der Innovationsallianz Photovoltaik

    Mehrere Projekte sollen mit Industriepartnern am PVcomB umgesetzt werden  [...]

  • <p>Die ehemalige HZB-Auszubildende Katrin Kerrmann <br />(re, neben Herrn Breuer) freute sich &uuml;ber die Gl&uuml;ckw&uuml;nsche <br />von der Bundeskanzlerin</p>NACHRICHT      05.09.2011

    Bundeskanzlerin Angela Merkel ehrt HZB-Auszubildende im ABB-Ausbildungszentrum

    Am vergangenen Freitag wurde im Beisein von Bundeskanzlerin Angela Merkel das Ausbildungsjahr 2011/2012 im ABB-Ausbildungszentrum in Pankow  feierlich eröffnet. Im Rahmen der Feierstunde am 2. September wurde auch die ehemalige HZB-Auszubildende Katrin Kerrmann von der Bundeskanzlerin für ihren vorzeitigen guten Abschluss als Mechatronikerin geehrt. [...]

  • NACHRICHT      01.09.2011

    Mitmach-Experimente zu den Tagen der Forschung in Adlershof

    Zu den Tagen der Forschung in Adlershof bietet das HZB  am 22. und 23.9.2011 Mitmach-Experimente für Schülerinnen und Schüler an. [...]

  •  HZB staff scientist Florin Radu checks the BaTiO3 sample<br />alignment in the ALICE diffractometer.NEWS      22.08.2011

    Locating the Elusive

    HZB scientists observe how a material at room temperature exhibits a unique property – a „multiferroic“ material with potential uses for cheap and quick data storage. [...]

  • NACHRICHT      21.08.2011

    Highlight-Bericht 2009/2010

    Der neue Highlight-Bericht des HZB ist da. Im kürzlich erschienenen Jahresbericht können Sie sich auf einen Streifzug durch die Wissenschaft begeben. In allgemeinverständlichen Texten stellen wir Ihnen die besonderen Höhepunkte aus einem Jahr Forschung am HZB vor. Gern möchten wir Ihre Aufmerksamkeit auch auf unsere weiteren Druckschriften lenken, in denen Sie einen Überblick über die Forschungsthemen des HZB bekommen. [...]

  • NACHRICHT      18.08.2011

    am 19.08.: Tag der offenen Tür in Wannsee

    Am Freitag, den 19. August findet der zweite Informationstag rund um die Forschungsneutronequelle statt. Anwohnerinnen und Anwohner sowie interessierte Berlinerinnen und Berliner sind eingeladen, die Experimentiereinrichtungen rund um den BER II zu besichtigen. Außerdem wird es Vorträge zum Aufbau und Sicherheitskonzept des Forschungsreaktors geben. Wissenschaftler erläutern außerdem die Forschungen, die mit Neutronen gemacht werden.Detaillierte Informationen bietet die Seite zum Infotag. [...]

  • NACHRICHT      15.08.2011

    2. Joint Berlin MX Day

    Die in Berlin auf dem Gebiet der Strukturbiologie forschenden Wissenschaftler betreiben seit einem Jahr gemeinsam das Joint Berlin MX Laboratory. Am 17. August findet der zweite gemeinsame Workshop statt. Gastgeber ist diesmal das Max-Delbrück-Centrum in Berlin-Buch. Wer noch teilnehmen möchte, kann sich gern noch anmelden - per email an Prof. Dr. Udo Heinemann: heinemann@mdc-berlin.de [...]

  • NACHRICHT      11.08.2011

    Thomas Hannappel erhält Stiftungsprofessur „Photovoltaik“ an der TU Ilmenau

    TU Ilmenau und HZB unterzeichnen MoU für eine enge Kooperation in der Photovoltaik [...]

  • NACHRICHT      07.07.2011

    Forschungscampus Dahlem: Helmholtz-Zentrum Berlin und Freie Universität Berlin rücken zusammen

            1. Goran Krstin, Pressesprecher des Präsidenten der Freien Universität Berlin, Telefon: 030 / 838-73106, Telefax: 030 / 838-473106, E-Mail: goran.krstin@fu-berlin.de
            2. Hannes Schlender, Stabsstelle Kommunikation, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Telefon: 030 / 8062-42034, Telefax: 030 / 8062-42998, E-Mail: hannes.schlender@helmholtz-berlin.de

          Das Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) und die Freie Universität Berlin haben heute mit der feierlichen Unterzeichnung eines Memorandum of Understanding eine wichtige Grundlage für den Ausbau ihrer Zusammenarbeit geschaffen. [...]

        1. NACHRICHT      30.06.2011

          Neues Virtuelles Institut am HZB

          Das Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) hat den Zuschlag der Helmholtz-Gemeinschaft für das Virtuelle Institut „Dynamic Pathways in Multidimensional Landscapes“ bekommen. Damit fördert die Helmholtz-Gemeinschaft das Institut über 4 Jahre mit insgesamt 2,29 Mio. Euro. Die Wissenschaftlerinnen und Wissenschaftler des Virtuellen Instituts wollen in ineinandergreifenden Projekten die Wirkprinzipien funktionaler Materialien erforschen. [...]

        2. NACHRICHT      28.06.2011

          Erfolgsgeschichte mit Fortsetzung - 10 Jahre Deutsch-Russisches Labor

          Eine Erfolgsgeschichte feiert Geburtstag: Das Russisch-Deutsche Labor an der Speicherringanlage BESSY II des Helmholtz-Zentrums Berlin in Adlershof wird zehn Jahre alt. Die Einrichtung, in der Wissenschaftler zum fundamentalen Verständnis der Struktur von Materie forschen, ist eine in dieser Form einzigartige Kooperation zwischen deutschen und russischen Wissenschaftlern. [...]

        3. <p>v.l.n.r.:<br />Prof. Dr. Bernd Rech<br />Leiter Abteilung Silizium-Photovoltaik HZB<br />Prof. Dr. Anke Kaysser-Pyzalla<br />Wissenschaftliche Gesch&auml;ftsf&uuml;hrerin HZB<br />Dr. Dan Arvizu<br />Vorstandsvorsitzender NREL<br />Dr. Ulrich Breuer Gesch&auml;ftsf&uuml;hrer HZB</p>NACHRICHT      24.06.2011

          Transatlantische Kooperation in der Solarforschung

          Das Helmholtz-Zentrum Berlin vereinbart gemeinsam mit DLR und Forschungszentrum Jülich die Zusammenarbeit mit dem amerikanischen Energieforschungsinstitut NREL [...]

        4. NEWS      24.06.2011

          Helmholtz-Zentrum Berlin weist Behauptungen des ARD-Magazins Kontraste zurück

          Als Betreiber der Forschungsneutronenquelle BER II weisen wir die Behauptungen des ARD-Magazins «Kontraste» scharf zurück.
          In der aktuell verschickten Pressemitteilung verschweigt das Magazin, was der TÜV-Bericht tatsächlich schreibt, nämlich, dass die angesprochene Undichtigkeit nicht sicherheitsrelevant ist. Es trat und tritt zu keinem Zeitpunkt Kühlwasser aus dem Becken des Forschungsreaktors BER II aus.
          Wir haben nie bestritten, dass es eine Undichtigkeit im Bereich der Trennwand gibt, jedoch ist diese Trennwand nicht Teil des Kühlsystems. Das Kühlmittel ist der Gesamtinhalt des Reaktorbeckens bestehend aus dem Betriebs- und dem Absetzbecken. Aus dem Reaktorbecken tritt kein Kühlmittel aus, insofern gibt es auch keinen Riss im Kühlsystem. Etwas anderes sagt auch der TÜV-Bericht nicht.
          Die Trennwand ist ein für Wartungsarbeiten vorgehaltenes Bauteil. Sie wird nur am abgeschalteten Reaktor in seltenen Fällen gesetzt, wenn man bei bestimmten Wartungsarbeiten in den beiden Beckenteilen unterschiedliche Wasserstände realisieren möchte. In solchen Situationen tröpfelt infolge der Undichtigkeit Wasser von einem Beckenteil in den anderen. Dies beeinträchtigt auch nicht die Wartungsarbeiten. Es sind weiterhin alle Prüfungen und Inspektionen möglich, und es besteht zu keinem Zeitpunkt die Möglichkeit, das Kühlwasser austreten könnte. Auch dies bestätigt der TÜV-Bericht. Im Reaktorbetrieb ist die Trennwand ohnehin nicht gesetzt, die beiden Beckenteile sind miteinander verbunden und bilden ein großes Becken.
          Der BER II ist nach einem hohen Sicherheitsstandard konzipiert und entspricht in allen Punkten diesen Anforderungen, siehe auch die Stellungnahme der Landesatomaufsicht zu den geäußerten Vorwürfen.
          Die Aussagen des ARD-Magazins stützen sich auf böswillige Behauptungen, mit denen ein ehemaliger Mitarbeiter persönliche finanzielle Interessen verfolgt und versucht seinen früheren Arbeitgeber zu diskreditieren. Das HZB hatte dem damaligen Leiter der Werkstatt fristlos gekündigt, weil dieser seine Mitarbeiter bedroht hatte. Schriftlich vorliegend hat er danach gut dotierte Beraterverträge mit dem HZB im Austausch gegen eine Verschwiegenheitserklärung gefordert.

        5. Das Business-Speed-Dining bei einem der vier Wechsel der<br />GERMAN HIGH TECH CHAMPIONS.<br />Foto: FraunhoferNACHRICHT      20.06.2011

          ILGAR ist German High Tech Champion 2011

          Verfahren des Helmholtz-Zentrum Berlin ermöglicht umweltverträgliche Herstellung von Dünnschicht-Solarzellen [...]

        6. NACHRICHT      10.06.2011

          Böswillige Falschaussagen im ARD-Magazin Kontraste

          Im ARD-Magazin Kontraste trat am Donnerstag abend ein ehemaliger Mitarbeiter auf, um aufbauend auf Halbwahrheiten und Lügen seinen früheren Arbeitgeber zu diskreditieren. Das HZB hatte dem früheren Leiter der Werkstatt fristlos gekündigt. Die in der Sendung dargestellten bösartigen Behauptungen zu angeblichen gravierenden Sicherheitsmängeln, voll auf Skandal gebürstet, sind unzutreffend. Dies haben wir auch nachfragenden Medien mitgeteilt. [...]

        7. <p>Prof. Dr. Emad Flear Aziz<br /></p>NACHRICHT      25.05.2011

          Flüssigkeiten im Synchrotron: Mit weicher Röntgenstrahlung der Funktion von Materialien auf der Spur

          Der Karl-Scheel-Preis 2011 der Physikalischen Gesellschaft zu Berlin geht an Prof. Dr. Emad Flear Azizvon der Freien Universität Berlin und dem Helmholtz-Zentrum Berlin für Materialien und Energie [...]

        8. Das bisher einzige bekannte Skelett der Messel-Eidechse<br />Cryptolacerta. Das Fossil ist nur wenige Zentimeter groß<br />und bis auf den Schwanz nahezu vollständig erhalten.<br />Vorder- und Hinterbeine besaßen nur sehr kleine Füße,<br />ein erster Schritt in der Reduktion der Gliedmaßen.<br />© MfNNACHRICHT      19.05.2011

          Fossile Eidechse aus der Grube Messel widerlegt Theorie über Ursprung der Schlangen

          Helmholtz-Zentrum Berlin an der Untersuchung des fossilen „Missing Link“ beteiligt [...]

        9. Dr. Johannes BahrdtNEWS      13.05.2011

          Synchrotronlicht in bisher unerreichter Qualität: „Wichtiger Schritt auf dem Weg zu einem stabilen Freie Elektronen Laser“


        10. NACHRICHT      06.05.2011

          Forschern gelingt es, Partikel beim Sintern dreidimensional sichtbar zu machen

          Sintern ist ein Verfahren, um aus metallischen oder keramischen Pulvern Werkstoffe oder komplexe Bauteile herzustellen. Bei Temperaturen unterhalb des Schmelzpunktes entsteht aus einem Ausgangspulver ein Festkörper höherer Dichte. Mithilfe der hochauflösenden Synchrotron-Computer-Tomografie konnten HZB-Wissenschaftlern in einem gemeinsamen Forschungsprojekt den Prozess weiter aufklären und erstmals die Bewegung der Partikel in 3D darstellen. [...]

        11. Vordere Reihe, von links nach rechts: Leona Berndt, Christiane<br />Kowsky, Daniela Dalm<br />Hintere Reihe, von links nach rechts: Gesa Volkers, Xenia<br />Bogdanovic, Britta Girbardt, Christiane Großmann, Dr. Christiane<br />Fenske, Dr. Gottfried Palm, Winfried Hinrichs<br />Foto: Uni GreifswaldNACHRICHT      02.05.2011

          Kampf gegen Antibiotika-Resistenzen - Wissenschaftler enttarnen Resistenzprotein

          Wissenschaftler des Helmholtz-Zentrum Berlin haben mit der Synchrotronstrahlungsquelle BESSY II an der Strukturaufklärung eines Proteins mitgewirkt, das für Antibiotikaresistenzen verantwortlich ist: Mit ihrer Unterstützung ist es Forschern der Universität Greifswald gelungen, die Struktur des Proteins Monooxygenase TetX zu entschlüsseln, das Bakterien eine Resistenz gegen Tetracyclin-Antibiotika vermittelt. Damit wurde erstmals ein Schlüssel zum Verständnis eines Resistenzmechanismus gefunden, noch bevor die klinische Anwendung eines Antibiotikums wirkungslos wird. Ein entsprechender Artikel wurde jetzt in der wissenschaftlichen Fachzeitschrift FEBS Letters veröffentlicht. [...]

        12. Abbildung der transversalen Ladungsverteilung auf einem<br />Leuchtschirm, der für die Messung in den Strahlengang des<br />Elektronenstrahls gefahren ist.NACHRICHT      28.04.2011

          Wichtiger Schritt Richtung BERLinPro: Erster Elektronenstrahl aus SRF Quellinjektor

          Am 21. April 2011 hat das HZB mit einer supraleitenden Elektronenquelle (SRF Gun) die ersten Photoelektronen erzeugt und beschleunigt. Dies ist ein Meilenstein für das Projekt BERLinPro, und es ist zugleich weltweit das erste Mal, dass mit einem supraleitenden Hochfrequenz-Photoinjektor aus einer supraleitenden Photokathode ein Elektronenstrahl erzeugt worden ist.

        13. NACHRICHT      21.04.2011

          Neue Ausstellung von Michel Jacot im HZB-Hauptgebäude in Adlershof

          Kürzlich wurde die Ausstellung des Künstlers Michel Jacot im Helmholtz-Zentrum Berlin auf dem Wilhelm-Conrad-Röntgen-Campus eröffnet. Der Künstler, Fotograf und Journalist Jacot lebt und arbeitet in Berlin. Seine Kunstwerke können noch bis zum 8. Juli 2011 täglich von 8 bis 20 Uhr in der 3. Etage des Bürohauptgebäudes am BESSY II in Adlershof besichtigt werden. Das HZB bietet regelmäßig Künstlerinnen und Künstlerin die Möglichkeit, ihre Bilder auszustellen. Bis zu vier wechselnde Ausstellungen gibt es pro Jahr auf dem Campus in Adlershof. [...]

        14. Prof. Dr. Hans-Werner Schock (Institutsleiter Technologie, HZB,<br> links) und Dr. Frank Stubhan, CEO Centrotherm (Dünnschicht)<br> besiegeln die Unterschrift mit HandschlagNACHRICHT      15.04.2011

          centrotherm photovoltaics schließt Kooperationsvertrag im Bereich Dünnschicht mit der renommierten Berliner Forschungseinrichtung PVcomB

          Download der Pressemitteilung als PDF [...]

        15. <p>Ein Datenpunkt &auml;ndert die Polarisierung:<br /> Der Probenausschnitt zeigt die Magnetisierung,<br /> w&auml;hrend sie sich von oben nach unten umkehrt.</p>NACHRICHT      14.04.2011

          Nutzerexperiment bei BESSY-II: Ein schneller Schalter für Magnetnadeln

          Wissenschaftler aus aller Welt kommen ans HZB, um die beiden Großgeräte – die Synchrotronstrahlungsquelle in Adlershof und den Forschungsreaktor in Wannsee – für ihre Untersuchungen zu nutzen. Doch bevor es mit den Messungen losgehen kann, müssen die Forscher Anträge einreichen, die ein international besetztes Gremium begutachtet. Dieser Aufwand wird betrieben, um für die aussichtsreichsten wissenschaftlichen Ideen Messzeit zur Verfügung zu stellen. Nicht selten führen sie zu herausragenden Publikationen. Ein aktuelles Beispiel ist ein Nutzerexperiment, das am Speicherring BESSY II von dem Team von Dr. Hermann Stoll vom Max-Planck-Institut für Intelligente Systeme (ehemals Max-Planck-Institut für Metallforschung) zusammen mit Kollegen aus Gent und Regensburg durchgeführt wurde. [...]

        16. NACHRICHT      14.04.2011

          75 Mädchen besuchten das HZB zum Girls`Day

          Einmal im Jahr sind die Mädchen ihren männlichen Mitschülern auch in den Naturwissenschaften eine Nasenlänge voraus: Nämlich wenn deutschlandweit der Girls`Day stattfindet. Am 14. April war es wieder soweit. Im HZB gibt es eine lange Tradition, sich einen Tag lang speziell um die Mädchen zu kümmern und ihnen Einblicke in naturwissenschaftliche und technische Berufe zu geben. 50 Mädchen kamen an den Standort Wannsee, 25 Schülerinnen ans HZB nach Adlershof  [...]

        17. Top, centre: While the magnetization of gadolinium (red arrow)<br />has not yet changed, the magnetization of iron (blue arrow)<br />has already reversed.<br />Large <br />reversal, while the X-ray pulse (blue) measures it.<br />NEWS      12.04.2011

          Ultra-Fast Magnetic Reversal Observed

          A newly discovered magnetic phenomenon could accelerate data storage by several orders of magnitude. [...]

        18. NACHRICHT      08.04.2011

          Bernd Rech über Solarenergie auf Deutsche Welle TV

          Bernd Rech vom Helmholtz-Zentrum Berlin spricht auf Deutsche Welle TV über Solarenergie. "Prinzipiell scheint die Sonne in einer Stunde so viel auf die Erde, wie die Weltbevölkerung derzeit das ganze Jahr braucht. Das heißt, es ist 10.000 mal mehr. Es geht nur darum, einen kleinen Teil davon zu nutzen", sagte Prof. Bernd Rech im Interview. Wie wir diese Energie nutzen können und warum die Anwendungen bisher weniger effizient sind, erfahren Sie im Video. Der Physiker arbeitet am Institut für Silizium-Photovoltaik des Helmholtz-Zentrum Berlin für Materialien und Energie. [...]

        19. NACHRICHT      04.04.2011

          HZB liefert die TOP-Story 2010: “Der Goldene Schnitt in der Quantenwelt” ist die meist gelesene Pressemittlung auf dem Portal EurekAlert

          EurekAlert ist ein Onlineportal, auf dem Universitäten, Forschungsinstitute und forschungsnahe Organisationen ihre Nachrichten und Pressemitteilungen veröffentlichen können. Anders als einzelne Webseiten wird das Portal global genutzt und dient Journalisten oft als erste Informationsquelle für Themen aus den Naturwissenschaften, der Medizin und Technik. Eine Pressemitteilung des HZB wurde nun zur Top-Story 2010 gekürt. Die meiste Beachtung fand im letzten Jahr der Goldene Schnitt in der Quantenwelt, den Alan Tennant mit seinem Team entdeckt hat. Fast 130.000 Aufrufe zählte EurekAlert für diese Meldung. Damit gab es für die Nachricht mehr Aufmerksamkeit als für die beliebten Themen aus dem medizinischen Umfeld. [...]

        20. NACHRICHT      31.03.2011

          Leuchttürme der Photovoltaik in Berlin Adlershof

          Das Kompetenzzentrum Dünnschicht- und Nanotechnologie für Photovoltaik Berlin (PVcomB) produziert erste Solarmodule. Zugleich Baubeginn des Zentrums für Photovoltaik (ZPV). [...]

        21. <p>Im PVcomB k&ouml;nnen seit November Schichten <br />mit einer Gr&ouml;&szlig;e 30 cm x 30 cm produziert werden</p>NACHRICHT      29.03.2011

          Hochrangige Gäste kamen zur offiziellen Eröffnung des PVcomB am 30. März

          Zur Einweihungsfeier des PVcomB am 30. März haben sich hochrangige Gäste aus Politik und Wissenschaft die Klinke in die Hand geben. Georg Schütte, Staatssekretär im Bundesministerium für Bildung und Forschung, der Berliner Wissenschaftssenator Jürgen Zöllner und der Präsident der Helmholtz-Gemeinschaft, Jürgen Mlynek, haben gemeinsam mit der HZB-Geschäftsführung das Kompetenzzentrum offiziell eröffnet. [...]

        22. Das ist die 500ste Proteinstruktur, die am BESSY II ent- <br />schlüsselt wurde. Das Molekül, das im aktiven Zentrum des <br /> Proteins zu sehen ist, ist die Vorstufe eines Hemmstoffs für <br /> Pim-1. Die Struktur klärten Wissenschaftler von <br /> Bayer Healthcare Pharmaceuticals in Berlin auf.NACHRICHT      24.03.2011

          Von 1 auf 500… - 500ste Protein-Struktur an BESSY II entschlüsselt

          Haare, Haut, Blutkreislauf und Nervensystem – alles wird von winzigen biologischen Bausteinen gesteuert. Wer nach diesen kleinsten Bausteinen des Lebens forscht, landet automatisch bei ihnen: den Proteinen. Um diese Grundbausteine des Lebens und die Vorgänge, die sie bewirken, besser zu verstehen, archivieren Wissenschaftler in aller Welt ihre Erkenntnisse über Proteine in einer gemeinsamen Datenbank. Die HZB-Forschungsgruppe Makromolekulare Kristallografie (MX) stellt Nutzern am BESSY II die Technik zur Verfügung, mit der sie Protein-Strukturen entschlüsseln können. Vor kurzem wurde die bereits 500ste Struktur an diesen MX-Strahlrohren des HZB von Wissenschaftlern der Bayer Healthcare Pharmaceuticals Berlin entschlüsselt. [...]

        23. Schülerinnen und Schüler im Schülerlabor WannseeNACHRICHT      22.03.2011

          2000 Schüler kamen 2010 ans HZB-Schülerlabor Blick in die Materie

          Im Jahr 2010 haben fast 2000 Schülerinnen und Schüler die Angebote des Schülerlabors wahrgenommen. Das sind knapp 600 Teilnehmer mehr als 2009. Bis zu den Sommerferien 2011 sind alle Termine ausgebucht. Von August bis Dezember 2011 sind nur noch wenige Termine frei. [...]

        24. <p>Scientists sorts the X-Ray pulse (blue) from Terahertz pulse (red)<br />by using a mirror. The X-Ray flash passes through a 10 millimetre<br />small &rdquo;hole&rdquo; in the center of the mirror. </p>NEWS      02.02.2011

          Terahertz flashes enable accurate X-ray measurements

          Joint press release of European XFEL GmbH, Helmholtz-Zentrum Berlin and Deutsches Elektronen-Synchrotron DESY, a Research Centre of the Helmholtz Association [...]

        25. The imaged Brandenburg Gate is only a few micrometres in size.<br />The scientists took the green and red pictures of the model<br />merely 50 femtoseconds apart. NEWS      10.01.2011

          Fastest movie in the world recorded

          Scientists develop a method to film nanostructures [...]

        26. Sägezahnstruktur eines Blaze-GittersNACHRICHT      05.01.2011

          Exzellenz bei der Lichtbeugung

          HZB richtet Technologiezentrum für hocheffiziente optische Präzisionsgitter ein [...]

        27. NACHRICHT      20.12.2010

          Einstein-Stiftung wählt Nils Nüsse für „Berlin der Begegnungen“ aus

          Die Einstein-Stiftung Berlin hat 18 exzellente, engagierte junge Menschen zum Workshop „Berlin der Begegnung“ ausgewählt. Das Interesse an diesem Workshop ist groß, denn er ist ein wichtiges Instrument der Spitzenförderung Berlins. Die Wahl der Einstein-Stiftung fiel auf Nils Nüsse, der als Doktorand im Institut Nanometeroptik und Technologie des HZB arbeitet. Er darf mit dabei sein, wenn der Schirmherr des Workshops, Prof. Dr. Detlev Ganten, im Februar 2011 für vier Tage auf das Schloss Genshagen bei Berlin lädt. Ziel des Workshops ist es, jungen Nachwuchsführungskräfte an der Schnittstelle von Wissenschaft, Wirtschaft und Kultur ein Forum zum fachübergreifenden Austausch zu bieten.
          Wir gratulieren Herrn Nüsse herzlich zu dieser Auszeichnung. [...]

        28. <p>Foto: Sebastian Bolesch / BMBF</p>NACHRICHT      17.12.2010

          Henning Döscher gewinnt Essay-Wettbewerb "Welt der Zukunft"

          Wissenschaftler können nur trockene Texte verfassen? Von wegen! Der Solarforscher Henning Döscher hat gestern dieses Vorurteil klar widerlegt: Er erzielte den ersten Preis im Essay-Wettbewerb „Welt der Zukunft ‚Energie 2050‘ “. Im Rahmen der Abschlussveranstaltung zum Wissenschaftsjahr der Energie, welches vom HZB intensiv unterstützt wurde, erhielt er gestern von Forschungsministerin Schavan die Sieger-Urkunde – und die Aussicht auf einen spannenden Preis: Döscher wird an einer Reise eines Forschungsschiffes des Alfred-Wegener-Instituts für Polar- und Meeresforschung in der Helmholtz-Gemeinschaft teilnehmen. [...]

        29. NACHRICHT      16.12.2010

          17. Dezember: Berufungsvortrag für die W3-Professur Solar Fuels

          Am 17. Dezember wird Dr. Frank Osterloh einen Vortrag an der TU Berlin halten, der im Rahmen des gemeinsamen Berufungsverfahren der TU Berlin und des HZB auf eine W3-Professur "Solar Fuels" stattfinden wird. Der Vortrag beginnt um 9 Uhr c.t.  Ort: TU Berlin, Raum MA 415, Straße des 17. Juni 136, 10623 Berlin [...]

        30. <p>Boundaries of magnetic domains can be computer imaged<br />in three dimensions.<br /></p>NEWS      23.11.2010

          Imaging with neutrons: Magnetic domains shown for the first time in 3D

          So far, it has only been possible to image magnetic domains in two dimensions. Now, for the first time, Scientists at Helmholtz-Zentrum Berlin (HZB) have managed to create three-dimensional images of these domains deep within magnetic materials. [...]

        31.  Die erste am PVcomB produzierte Silizium-Schicht<br> auf 30x30 cm2 GlasNACHRICHT      19.11.2010

          PVcomB produziert erste Schichten

          Ein neuer Abschnitt in der Geschichte des PVcomB hat begonnen: Am 15.11. erfolgte die erste eigene Beschichtung von 30 x 30 cm2 Glasmodulen mit amorphem Silizium. Die Deposition erfolgte an einer PECVD-Clusteranlage der Firma Applied Materials, Herzstück der Forschungslinie für Dünnschicht-Silizium, die am PVcomB aufgebaut wird. [...]

        32. Slice through the nucleus of a mouse adenocarcinoma cell<br />showing the nucleolus (NU) and the membrane channels running<br />across the nucleus (NMC); taken by X-ray nanotomography.<br />Photo: HZB/SchneiderNEWS      18.11.2010

          New microscope reveals ultrastructure of cells

          HZB researchers can take images of small cellular components in their natural environment – while the cell remains intact [...]

        33. Dr. Aleksandr MatveenkoNACHRICHT      15.11.2010

          Aleksandr Matveenko erhält neue „Helmholtz-Russia Joint Research Group”

          Dr. Aleksandr Matveenko und sein russischer Kollege Dr. Oleg Shevchenko können sich freuen: Denn sie haben sich im Helmholtz-internen Wettbewerb gegen 23 hochrangige Vorschläge durchgesetzt und werden als eine von sechs neuen russisch-deutschen Nachwuchsgruppen mit bis zu 150.000 Euro jährlich gefördert. Mit diesem Geld sollen enge Kooperationen zu Nachwuchswissenschaftlern in Russland ermöglicht werden, um gemeinsame Forschungsprojekte, Experimente und Expeditionen durchzuführen. [...]

        34. The K1-XV-line-spectrum of beryllium-oxide. NEWS      08.11.2010

          HZB researchers may have observed the fastest melting of all time

          Scientists from Helmholtz-Zentrum Berlin (HZB) observed exotic be-haviour from beryllium oxide (BeO) when they bombarded it with high-speed heavy ions: After being shot in this way, the electrons in the BeO appeared “confused”, and seemed to completely forget the material properties of their environment. The researchers’ measurements show changes in the electronic structure that can be explained by extremely rapid melting around the firing line of the heavy ions. If this interpre-tation is correct, then this would have to be the fastest melting ever observed.
          The researchers are publishing their results in Physical Review Letters (DOI: 10.1103/ Phys.Rev.Lett.105, 187603 (2010)). The measuring was made at the cyclotron Ionenstrahllabor (ISL) that was closed in 2006 und led afterwards to this paper. [...]

        35. NEWS      26.10.2010

          Current loss tracked down by magnetic fingerprint

          HZB researchers solve the case of lost current in organic solar cells [...]

        36. NACHRICHT      20.10.2010

          Helmholtz-Zentrum Berlin eröffnet Schülerlabor in Adlershof

          am Donnerstag, den 28. Oktober, Beginn: 11:00 Uhr [...]

        37. NACHRICHT      12.10.2010

          Grünes Licht für BERLinPro

          Helmholtz-Zentrum Berlin entwickelt neuartige Beschleunigertechnologie [...]

        38. Jan Behrends (m.) nahm den Ernst-Reuter-Preis von <br/> FU-Präsidenten Prof. Dr. Alt (l.) entgegen <br/> Foto:B. Wannenberger/FU BerlinNACHRICHT      10.10.2010

          Jan Behrends hat den Ernst-Reuter-Preis der FU Berlin gewonnen

          Für seine erfolgreich am HZB abgeschlossene Dissertation hat Dr. Jan Behrends den Ernst-Reuter-Preis verliehen bekommen. Der mit 5000 Euro dotierte Preis wird jährlich für herausragende und zukunftsweisende Promotionsarbeiten von der Freien Universität Berlin vergeben. Die Preisübergabe fand am 6. Dezember im Rahmen einer Festveranstaltung statt, an der auch seine Betreuer Dr. Klaus Lips vom Institut für Silizium-Photovoltaik und Prof. Dr. Robert Bittl vom Fachbereich Physik an der FU Berlin teilnahmen. Dieses Jahr gab es vier Preisträger aus verschiedenen Fachrichtungen. [...]

        39. Award ceremony in ValenciaNEWS      16.09.2010

          Untiring dedication to solar energy

          HZB researcher honoured with solar award for his successful research [...]

        40. NEWS      10.09.2010

          Many Roads lead to Superconductivity

          HZB-Scientists discovered a unique feature of Superconductivity [...]

        41. Close-up of the liquid-jet.NEWS      10.09.2010

          LiXEdrom: Innovative measuring chamber for X-ray study of liquid jets

          Until now, the only way to study liquids by soft X-ray emission spectroscopy (XES) has been through a membrane window. Now, researchers of Helmholtz-Zentrum Berlin have carried out an XES study of a free micro-liquid jet on the synchrotron. [...]

        42. NACHRICHT      08.09.2010

          ZDF heute journal vom 7.9.2010, 21:45 Uhr - HZB Doktorandin Kathrin Lange spricht zum Thema "Fachkräftemangel in Deutschland"

          Frau Kathrin Lange, Doktorandin in der Nachwuchsgruppe für Funktionale Materialien in Flüssigkeiten, unter der Leitung von Prof. Dr. Emad Flear Aziz Bekhit am Helmholtz-Zentrum Berlin gibt Ihr Statement zum Thema "Fachkräftemangel in Deutschland" im ersten Beitrag des ZDF heute journals vom 7. September 2010. [...]

        43. NACHRICHT      02.09.2010

          Ein schneller Blick auf komplexe Ordnung

          Grundlagenforschung zu magnetischen Ordnungsphänomenen in Festkörpern ist eine der Hauptforschungsrichtungen am HZB, bei denen die Kombination von Neutronen- und Röntgenstreuung eine herausragende Rolle spielt. Materialien mit komplexen magnetischen Strukturen wie z.B. antiferromagnetische Halbleiter lassen sich mit solchen Methoden untersuchen. Hier ordnen sich unterhalb einer bestimmten Temperatur die magnetischen Momente in atomaren Schichten mit alternierender Magnetisierungsrichtung an. Dies führt zu magnetischen Beugungsreflexen, die auch mit Neutronen beobachtet werden können. Röntgenstreuung als komplementäre Methode kann zusätzlich eine hohe Ortsauflösung und, in Kombination mit ultrakurzen Röntgenpulsen, eine sehr hohe Zeitauflösung erreichen. Dies ermöglicht nun die Untersuchung der bisher nicht zugänglichen magnetischen Dynamik solcher komplexer Strukturen. [...]

        44. X-ray photon taking electron from the Fe(III) active center to the water mixed orbital in time scale faster than 7 femtoseconds (the corehole life time of Fe(III))NEWS      09.08.2010

          Help from the Dark Side

          Using “dark channel” fluorescence, scientists can explain how biochemical substances carry out their function [...]

        45. <p>Microscopical image of a graphene layer on a nickel substrate.<br />The image to the left, which was measured at an arbitrary bias<br />voltage of the microscope tip, shows just dark stripes. Only after<br />the bias voltage has spectroscopically been tuned to the very C60<br />molecules (right), they become visible beneath the graphene layer<br />as the cause of the stripe pattern.</p>NEWS      12.07.2010

          How soccer ball molecules push their way under surfaces - HZB researchers observe atomic processes while doping semiconductor materials

          How soccer ball molecules push their way under surfaces [...]

        46. NEWS      28.06.2010

          New telephone numbers at HZB!

          All 2.500 telephone sets of the HZB receive new phone extensions!
          The change of the phone system to new, HZB far valid phone numbers occurs between
          Friday 9th of July, and Sunday 11th of July, 2010.

        47. Großflächenbeschichtung am Fraunhofer IST </br>(Reiner Meier, BFF Wittmar)NACHRICHT      23.06.2010

          Forschung für die Dünnschichtphotovoltaik - Fraunhofer IST und HZB vereinbaren enge Zusammenarbeit

          Wie kann der Wirkungsgrad von Solarzellen weiter gesteigert werden? Wie können die Kosten gesenkt werden? Antworten auf diese und andere Fragen zur Dünnschicht-photovoltaik geben das Fraunhofer-Institut für Schicht- und Oberflächentechnik IST und das Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) künftig gemeinsam. Beide Institute wollen ihre zentralen Kompetenzen zukünftig bündeln: das Fraunhofer IST bringt sein know how zur Dünnschichttechnik ein, das HZB ist führend auf dem Gebiet der Dünnschichtphotovoltaik [...]

        48. NACHRICHT      07.06.2010

          Gute Stimmung bei der Langen Nacht der Wissenschaften

          Bei sommerlichem Wetter besuchten etwa 4.600 Besucher das Zentrum, ließen sich unsere Wissenschaft erklären und bestaunten die Exprimentierplätze der Großgeräte sowie die Labore der Solarenergie und experimentierten fleißig im Schülerlabor. [...]

        49. <p>Christian Stamm at BESSY II-beamline for femtoslicing</p>NEWS      27.05.2010

          First the orbit, then the spin

          Novel storage materials of the future will be made out of magnetic films. Researchers at HZB are the first to find out just how fast magnetic particles can be controlled. [...]

        50. NEWS      11.05.2010

          Penetrable barriers – tunnelling welcome

          The boundaries between grains in certain thin-film materials are no obstacle to charge carriers. They even help prevent losses in charge transport. Researchers from Helmholtz-Zentrum Berlin obtain experi-mental evidence for a bold theory. [...]

        51. NEWS      04.05.2010

          X-rays shed light on magnets

          A new test method developed in Berlin could soon find its way into textbooks. It makes thick, compact magnetic materials accessible, as well as materials used in spintronics and semiconductor technology.

        52. NACHRICHT      27.04.2010

          WUNDERKAMMER WISSENSCHAFT - Wanderausstellung in Adlerhof

          Die „Wunderkammer Wissenschaft“ bietet faszinierende Einblicke in die Welt der Wissenschaft – von kleinsten Nanowelten bis zu riesigen Großgeräten. Die Helmholtz-Gemeinschaft, Deutschlands größte Wissenschaftsorganisation, hat die Ausstellung auf Tournee geschickt. Nun macht sie Station in Berlin Adlershof, Deutschlands größtem Wissenschafts- und Technologiepark. Vom 27. April bis 3. Juni 2010 lädt das Helmholtz-Zentrum Berlin für Materialien und Energie zusammen mit der WISTA-MANAGEMENT GMBH ein, sich die Ausstellung im Zentrum für IT und Medien anzuschauen: Albert-Einstein-Straße 14, 12489 Berlin, geöffnet montags bis freitags von 8:00 bis 18:00 Uhr, Eintritt frei. [...]

        53. NACHRICHT      21.04.2010

          22. April Girls Day: 70 Mädchen besuchen das HZB

          70 Mädchen aus dem Klassenstufen 5-10 haben am 22. April die Möglichkeit, an beiden Standorten des HZB eher „männertypische“ Berufe und Arbeitsplätze kennenzulernen. [...]

        54. Prof. Dr. Eberhard JaeschkeNACHRICHT      19.04.2010

          Bundesverdienstkreuz für Prof. Dr. Eberhard Jaeschke

          Der langjährige Geschäftsführer der Berliner Elektronenspeicherring-Gesellschaft für Synchrotronstrahlung (BESSY) wird für seine Verdienste zur Entwicklung von Teilchenbeschleunigern geehrt. [...]

        55. NACHRICHT      15.04.2010

          Katalase und Methämoglobin: so ähnlich und doch verschieden

          Wichtige physiologische Prozesse beim Fettabbau und Sauerstofftransport aufgeklärt [...]

        56. NACHRICHT      07.04.2010

          Lange Nacht der Wissenschaften 2010 am HZB - Programmpräsentation

          Die Lange Nacht der Wissenschaften rückt näher. Daher ist es an der Zeit alle Kolleginnen und Kollegen über unser diesjähriges Programm zu informieren. Hierzu bieten wir zwei Termine an:

          Adlershof, Hörsaal BESSY-Geb., 10:00-11:00 Uhr
          Wannsee, Hörsaal, 14:00-15:00 Uhr

          An beiden Terminen möchten wir Ihnen vorstellen, wie sich unser Haus zur Langen Nacht präsentieren wird.

          Wir brauchen auch noch viele Helfer, damit diese Veranstaltung - wie auch schon in den vielen Jahren davor - zu einem Highlight im Sommer wird. Das Schülerlabor braucht tatkräftige Unterstützung bei der Experimentbetreuung und auch das Infozelt und andere Service-Stationen müssen noch besetzt werden.

          Wir würden uns freuen, wenn Sie zahlreich erscheinen und die Lange Nacht 2010 unterstützen. [...]

        57. NACHRICHT      01.04.2010

          20 Jahre Siemens Betriebsfeuerwehr am HZB

          Ein rundes Jubiläum hat heute die Betriebsfeuerwehr am Standort Wannsee des HZB gefeiert: Die „Löschgruppe HMI“ der Siemens-Werksfeuerwehr nahm am 1. April 1990 ihren Dienst auf. Seitdem sorgen Siemens-Mitarbeiter im Auftrag des heutigen HZB dafür, dass das Forschungszentrum sich professionell gegen Brand- und Katastrophenfälle schützt und im Alarmfall adäquat handeln kann. Den 20. Jahrestag haben die Feuerwehrmänner heute gemeinsam mit Gästen des HZB, der Firma Siemens, der Berliner Feuerwehr und der zuständigen Behörden mit einem Mittagsimbiss gefeiert. [...]

        58. Behandlungsstatistik: Jede Säule steht für ein Jahr erfolg-<br />reicher Tumortherapie mit Protonen. Auf den Platten sind<br />die Blenden aller in diesem Jahr behandelter Patienten<br />aufgeklebt. Das Original hängt im Flur des P-Gebäudes.NACHRICHT      22.03.2010

          1500 Patienten der Augentumortherapie behandelt

          Mit Ende der dritten Behandlungswoche des Jahres 2010 ist eine runde Zahl erreicht: Am 19. März 2010 um 17:08 Uhr haben Ärzte der Charité den Augentumor des 1500. Patienten abschließend mit Protonen am Helmholtz-Zentrum Berlin bestrahlt. [...]

        59. NACHRICHT      18.03.2010

          Bundesverdienstkreuz für Prof. Dr. Michael Steiner

          Prof. Dr. Michael Steiner, langjähriger Geschäftsführer des Hahn-Meitner-Instituts (HMI), erhält am 18. März aus den Händen von Bundesforschungsministerin, Annette Schavan, das Bundesverdienstkreuz 1. Klasse. Mit dieser Auszeichnung würdigt der Bundespräsident vor allem Steiners Beiträge „zur Weiterentwicklung des deutschen Wissenschaftssystems über die bestehenden Grenzen hinaus“. Steiner habe sich mit unermüdlichem Engagement für die Stärkung der europäischen Wissenschaftsinfrastruktur eingesetzt und dabei die Wissenschafts- und Technologieentwicklung eng vernetzt, heißt es in der Begründung. Betont wird dabei, dass Steiner für die am HMI etablierte Solarenergieforschung neue Strukturen geschaffen hat, die es erleichtern, wissenschaftliche Ergebnisse in die Technologieentwicklung zu überführen. [...]

        60. NACHRICHT      23.02.2010

          Teilchenbeschleuniger und Neutronenquellen im Dienst der Materialforschung

          Mehr als 700 Wissenschaftler treffen sich in Berlin zur SNI 2010 [...]

        61. NACHRICHT      08.02.2010

          11.02.2010: Erster Berliner Science Slam - Teilnehmer gesucht!

          Bei der Bewertung geht es allerdings nicht vorrangig um den wissenschaftlichen Wert der Arbeit. Vielmehr entscheidet eine informative und unterhaltsame Darstellung des Forschungsthemas – egal, ob es in den Natur- oder Geisteswissenschaften, in den Sozial- oder Ingenieurswissenschaften oder in der Medizin angesiedelt ist.  [...]

        62. NEWS      19.01.2010

          Data at the end of the Tunnel

          Electric control of aligned Spins improves Computer Memory [...]

        63. NACHRICHT      11.01.2010

          Stickstoff ist nicht so träge, wie man denkt - Die neue Erkenntnis soll zu besseren Halbleitermaterialien führen

          Stickstoff ist als Hauptbestandteil der Luft ein allgegenwertiges, aber trotzdem wenig beachtetes Element. Das Molekül gilt als reaktionsträge, man nennt es auch inert. Im Labor arbeitet man deshalb immer dann unter Stickstoffatmosphäre, wenn Sauerstoff oder die Feuchtigkeit der Luft zu aggressiv für empfindliche Proben sind. Der Grund für die Trägheit: Zwei Stickstoffatome sind im Molekül derart fest aneinandergebunden, dass sie für ihre Umgebung kaum Interesse haben. Forscher des Helmholtz-Zentrums Berlin für Materialien und Energie (HZB) kratzen nun an dem sauberen Stickstoff-Image. Im Fachmagazin Physical Review Letters erklären sie, was tatsächlich passiert, wenn Stickstoff mit einem Festkörper, wie zum Beispiel Zinkoxid in Verbindung tritt.  [...]

        64. <p></p>NEWS      08.01.2010

          Golden ratio discovered in a quantum world

          Researchers from the Helmholtz-Zentrum Berlin für Materialien und Energie (HZB), in cooperation with colleagues from Oxford and Bristol Universities, as well as the Rutherford Appleton Laboratory, UK, have for the first time observed a nanoscale symmetry hidden in solid state matter. They have measured the signatures of a symmetry showing the same attributes as the golden ratio famous from art and architecture. The research team is publishing these findings in Science on the 8. January. [...]

        65. Prof. A. Föhlisch und Dr. E. Suljoti bei der Arbeit an der<br>Undulatorbeamline UE52-PGM bei BESSY II.NACHRICHT      30.12.2009

          Wie Kreisel auf atomarer Ebene miteinander wechselwirken

          Die Wechselwirkungen zwischen Elektronen und dem Atomgerüst in einem Festkörper sind die Grundlage von Materialeigenschaften, die eine zunehmend wichtige technologische Rolle spielen. Dazu gehört zum Beispiel das schnelle Schalten magnetischer Medien, wie es etwa für die Speicherung von Daten auf Computerfestplatten erforderlich ist.  Diesen Vorgang untersuchen und optimieren Wissenschaftler derzeit im Labor anhand der ultraschnellen Demagnetisierung von ferromagnetischen Schichtsystemen. Um solche Materialsysteme weiter optimieren zu können, müssen Wissenschaftler die Wechselwirkung zwischen Elektronen und Atomgitter detailliert verstehen. Forscher die am Helmholtz-Zentrum Berlin (HZB) und der Universität Hamburg tätig sind, haben nun einen wichtigen Teilprozess der Wechselwirkung der Elektronen mit den so genannten Phononen, den Quasiteilchen der atomaren Gitterschwingung, aufgeklärt. Dabei konnten sie zeigen, wie und vor allem mit welcher Effizienz Elektronen eine ihrer fundamentalsten Eigenschaften, den so genannten Drehimpuls, mit den Phononen austauschen können. Ihre Ergebnisse hat das Team um Professor Alexander Föhlisch, Leiter des HZB-Instituts für „Methoden und Instrumentierung der Synchrotronstrahlung“, und Professor Wilfried Wurth von der Universität Hamburg jetzt in der Fachzeitschrift „Physical Review Letters“ publiziert. Den Nachweis und die Quantifizierung dieses Effekts führten das Team an einem klassischen Modellsystem durch, dessen physikalische Eigenschaften sehr genau bekannt sind: Silizium. An der Synchrotronstrahlungsquelle BESSY II des HZB bestrahlten sie Siliziumkristalle mit Röntgenstrahlung und maßen dann hochpräzise die Energie der an der Probe gestreuten Lichtteilchen, der Photonen. Die Analyse der Ergebnisse dieser auch als resonante inelastische Röntgenstreuung bezeichneten Methode erlaubte es nun, die Wahrscheinlichkeit eines sogenannten Drehimpulstransfers zwischen Phonon und Elektron genau zu bestimmen. Der Effekt ist klein - in Silizium etwa 50 Mal kleiner als die bekannte dominierende klassische Elektronen-Phononen Wechselwirkung, bei der kein Drehimpuls übertragen werden kann –, weil die Phononen nur in seltenen ausgewählten Situationen zu einem Drehimpulsübertrag in der Lage sind. Die zur genauen Vermessung notwendige Sensitivität erreichten die Wissenschaftler durch die Kopplung der „Hamburg Inelastic X-ray scattering station“ (HIXSS) mit der hochbrillanten Synchrotronstrahlung des Speicherrings BESSY II. „Das Resultat unserer Messung ist ein wichtiger Baustein auf dem Weg zu einem besseren Verständnis der komplizierten Kopplungen zwischen Atomgitter und den drei wichtigen Eigenschaften der Elektronen – dem Spin, dem Bahndrehimpuls und der Ladung“, sagt Alexander Föhlisch: „Technologisch bedeutsame Materialeigenschaften wie schnelle Magnetisierungsprozesse können wir somit besser erklären.“ Um diese Untersuchungen zukünftig in idealer Weise am Helmholtz-Zentrum Berlin zu ermöglichen, befindet sich der neue RICXS Messplatz am Speicherring BESSY II im Aufbau. Zukünftig wird dort resonante inelastische Röntgenstreuung hoher Energie und Impulsauflösung bei höchster Transmission durchgeführt werden. Mehr dazu in der Originalveroeffentlichung: M. Beye, F. Hennies, M. Deppe, E. Suljoti, M. Nagasono, W. Wurth, A. Foehlisch, Dynamics of Electron-Phonon Scattering: Crystal- and Angular-Momentum Transfer Probed by Resonant Inelastic X-Ray Scattering, Phys. Rev. Lett. 103 (2009), 237401. [...]

        66. NEWS      29.11.2009

          Spinons – Confined like Quarks

          Phenomenon known from Particle Theory observed for the first time in Condensed Matter

          The concept of confinement is one of the central ideas in modern physics. The most famous example is that of quarks which bind together to form protons and neutrons. Now Prof. Bella Lake from Helmholtz-Zentrum Berlin (HZB) together with an international team of scientists report for the first time an experimental realization and a proof of confinement phenomenon observed in a condensed matter system. [...]

        67. NACHRICHT      19.11.2009

          Das Aushärten von Zement - Neue Einblicke mit modernen Methoden der Neutronenstreuung

          Die Zementindustrie gehört zu den Branchen, die wesentlich zum Kohlendioxid-Ausstoß beitragen. Fünf bis sieben Prozent beträgt ihr Anteil an der weltweiten Emission. Technologieentwicklungen zielen deshalb darauf ab, die Haltbarkeit des Betons entscheidend zu verbessern, um so weniger Beton herstellen zu müssen. Dazu muss vor allem der Wasserfluss im Zement reduziert werden, was nur gelingt, wenn man das Prinzip der Wasser-Mobilität während des Aushärtens versteht. Forscher des Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) haben in Kooperation mit internationalen Kollegen neue Einblicke in diese Prozesse gewonnen. In der Fachzeitschrift ACS Applied Materials & Interfaces stellen Heloisa Bordallo (HZB) und ihr Team Neutronenmessungen vor, mit denen sie auf einzigartige Weise den Wassertransport im Zement verfolgen können. [...]

        68. NEWS      16.11.2009

          Outstanding Results on Research in Synchrotron Radiation rewarded

          At the “First Joint BER II and BESSY II Users´ Meeting” on November 12th / 13th the “Freundeskreis Helmholtz-Zentrum Berlin e. V.” bestowed the “Ernst-Eckhard-Koch-Prize" and the „Innovation-Award on Synchrotron Radiation“ for 2009. [...]

        69. NACHRICHT      10.11.2009

          MAXYMUS - Neue Einsichten mit Röntgenblitzen

          Das derzeit modernste Rasterröntgenmikroskop wird vom Stuttgarter Max-Planck-Institut für Metallforschung am Helmholtz-Zentrum Berlin eingeweiht; Experten treffen sich zum Workshop über Röntgenmikroskopie Stuttgart/Berlin: Am 10. und 11. November weiht das Stuttgarter Max-Planck-Institut für Metallforschung (MPI-MF) im Rahmen des internationalen Workshops „New Frontiers in Soft X-Ray Microscopy“ feierlich sein neues Rasterröntgenmikroskop MAXYMUS an der Berliner Synchrotronstrahlungsquelle BESSY II ein. Unter der Schirmherrschaft von Professor Dr. Anke Rita Kaysser-Pyzalla, Wissenschaftliche Geschäftsführerin am Helmholtz-Zentrum Berlin (HZB), Professor Dr. Gisela Schütz, Direktorin der Abteilung „Moderne magnetische Materialien“ am MPI-MF und Dr. Brigitte Baretzky, Projektleiterin am MPI-MF treffen sich zahlreiche hochrangige Experten aus aller Welt, um über die neuesten Entwicklungen auf dem Gebiet der Röntgenmikroskopie zu diskutieren. [...]

        70. NEWS      05.11.2009

          Prof. Michael Steiner is the new chairman of ENSA

          The former scientific director of HMI (1998 bis 2008), Prof. Michael Steiner, is the new chairman of the European Neutron Scattering Association (ENSA). ENSA is an affiliation of the national neutron scattering societies which directly represent about 4500 european neutron scatterers. In his first words Michael Steiner argues: “It is very important for the future of the field to recruit in a sustainable fashion young scientists and to ensure that the continuously improving potential of neutron scattering does reach research areas, which have not been using neutron up to now.” ENSA would be the right platform for coordinated and coherent actions on a European scale. Steiner continues: “The new challenge for ENSA will be to extend the present discussion about existing sources and the interplay between large and small facilities to a forward looking vision for neutrons inEuropenow, when ESS is at the horizon.” [...]

        71. NEWS      19.10.2009

          New material provides a key to explaining superconductivity

          [Translate to Englisch:] Forscher des Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) stellen in der aktuellen Ausgabe der Zeitschrift Nature Materials neue Ergebnisse vor, die einen alten Streit um die richtige Theorie lösen könnten. [...]

        72. NACHRICHT      06.10.2009

          Aktionswoche zum Thema Open Access vom 19. bis 23. Oktober

          Publikationen im Internet abrufen zu können – kostenfrei und zugänglich für alle – das ist die Idee des Open Access. Jeder Produzent von wissenschaftlicher Erkenntnis, aber auch die gesamte Öffentlichkeit sollen die Ergebnisse öffentlich geförderter Forschung einsehen können, einschließlich der Original- und Metadaten. Die Nutzer sollen die gesamten Texte uneingeschränkt lesen, kopieren, verteilen, drucken, in ihnen suchen oder auf sie verweisen können, ohne dabei an finanzielle, gesetzliche oder technische Barrieren zu stoßen. Bislang ist dies nur bedingt möglich, denn kommerziell arbeitende Verlage sowie oft auch Verlage von Wissenschaftsgesellschaftenmachen Vertriebsrechte geltend und verkaufen die Publikationen. Die Wissenschaft hat begonnen, sich dagegen zu wehren und gründet zunehmend Open Access-Journale oder fordert das Recht, die eigenen Ergebnisse nach einer Erstpublikation in einem klassischen Verlag auch online veröffentlichen zu dürfen. [...]

        73. NEWS      02.10.2009

          More than 300 Scientists at SRF 2009 in Berlin

          International Conference on RF-Superconductivity and Accelerator Physics was a great success!  [...]

        74. NACHRICHT      02.10.2009

          Professor Föhlisch beginnt als neuer Institutsleiter am HZB

          Professor Dr. Alexander Föhlisch leitet seit dem 1. Oktober das Institut für „Methoden und Instrumentierung der Forschung mit Synchrotronstrahlung“ am HZB. Am 22. Juli hatte er den Ruf an die Universität Potsdam und das Helmholtz-Zentrum Berlin angenommen.   Professor Föhlisch studierte Physik in Tübingen, Stony Brook und Hamburg und promovierte an der Universität Uppsala/Advanced Light Source in Berkeley. Zuletzt war er als Privatdozent am Institut für Experimentalphysik der Universität Hamburg sowie am Centre for Free-Electron Laser Science (DESY) tätig.   Jenseits der Physikabsolvierte der vielinteressierte Wissenschaftler den Master of Arts an der State University of New York und widmete sich dem Studiengang „Europäische Union und internationale Wirtschaftsbeziehungen“.   Sein wissenschaftliches Interesse gilt der Weiterentwicklung innovativer Röntgenmethoden, um die elektronische Struktur und Dynamik auf atomaren Skalen sichtbar zu machen. Über die daraus resultierenden Erkenntnisse von physikalischen und chemisch relevanten Prozessen erhält man ein besseres Verständnis funktionaler Materialien für ultraschnelles Schalten, der Photovoltaik sowie der molekularen Dynamik und der heterogenen Katalyse.   Willkommen am HZB [...]

        75. NACHRICHT      01.10.2009

          Orbital 2009 - internationaler Workshop am HZB

          Am 7. und 8. Oktober 2009 findet am Helmholtz-Zentrum Berlin am Standort Adlershof der Workshop "Orbital 2009" mit 95 Teilnehmern aus aller Welt statt. [...]

        76. NACHRICHT      30.09.2009

          Zweifacher Erfolg für das HZB bei der SAS-Konferenz

          SAS-Konferenz im Jahr 2015 in Berlin!  

          Die internationale Konferenz „Small Angle Scattering“ (SAS) wird im Jahr 2015 in Berlin stattfinden. Das entschied sich während der SAS2009, die vom 13. bis 18. September in Oxford stattfand.   Bei der SAS-Konferenzreihe steht die Forschung zu zerstörungsfreien Strukturcharakterisierungs-Methode der Kleinwinkelstreuung („Small Angle Scattering“) im Vordergrund, mit denen sich komplexe Materialsysteme untersuchen lassen . Die SAS-Konferenz ist eine ideale Plattform, Röntgen- wie auch Neutronenanwendungen in verschiedenen Forschungsdisziplinen zu verknüpfen. Die Ausrichtung der SAS2015 eröffnet somit gute Möglichkeiten sowohl den Wissenschaftsstandort Berlin weiter in den Mittelpunkt der internationalen Wissenschaftsgemeinde zu rücken als auch die Forschungsinfrastruktur des HZB und seiner Förderung der komplementären Anwendung von Photonen und Neutronen.   Das HZB bewarb sich in Kooperation mit dem Stranski-Institut der Technischen Universität Berlin und dem Max-Planck-Institut für Kolloid- und Grenzflächenforschung für die Ausrichtung der SAS2015 und überzeugte mit seinem Konzept. Von 260 Wählern hatten etwa 70% für Sydney als Austragungsort im Jahr 2012 in Kombination mit Berlin als Ort für die SAS2015 gestimmt. Zur Wahl für die Ausrichtung der SAS-Konferenzen, die in der Regel alle 3 Jahre tagt, standen Sydney, Knoxville und Berlin.   Federführend bei der Vorbereitung und Durchführung der erfolgreichen Bewerbung waren Professor Dr. Peter Fratzl (Max-Planck-Institut für Kolloid- und Grenzflächenforschung) als Vortragender, Professor Dr. M. Gradzielski (TU Berlin), Dr. Stephan Roth (DESY), Dr. Daniel Clemens (HZB), Dr. Armin Hoell (HZB) sowie die Kommunikationsabteilung des HZB.     [...]

        77. NACHRICHT      22.09.2009

          Zwei neue Nachwuchsgruppen am HZB

          Die Helmholtz-Gemeinschaft hat in einem Auswahlverfahren 20 Nachwuchswissenschaftlerinnen und -wissenschaftler ausgewählt, die an den Zentren der Helmholtz-Gemeinschaft ihre eigene Forschungsgruppe aufbauen können. In diesem Verfahren haben sich auch zwei Kandidaten des HZB durchgesetzt: Dr. Emad Flear Aziz Bekhit und Dr. Aleksandr Matveenko. Aleksandr Matveenko (links im Bild) arbeitet im Projekt BERLinPro am Aufbau einer neuen Lichtquelle, einem Energy Recovery Linac. In diesem wird spezielles Röntgenlicht erzeugt mit einer im Vergleich zur Synchrotronstrahlung noch höheren Brillanz. Dazu werden in einem Linearbeschleuniger Elektronen auf nahezu Lichgeschwindigkeit beschleunigt und nach einem Umlauf im Ring wieder abgebremst. Man gewinnt damit einen großen Teil der Energie zurück. Aleksandr Matveenko beschäftigt sich mit dem Design der Magnetsysteme, die die Elektronen auf ihrer Bahn steuern. Dazu ist er vom russischen Budker Institue of Nuclear Physics (BINP), wo er sechs Jahre geforscht hat, nach Berlin gewechselt. Ein ausführliches Interview und Informationen zum Projekt BERLinPro finden Sie im Forschungsmagazin Sichtbar, Ausgabe 04., Seite 32. Emad Aziz (rechts im Bild) hat am Speicherring BESSY II eine Experimentierkammer entwickelt, mit der es nun möglich ist, bislang unzugängliche Flüssigkeits-Proben mit Synchrotronstrahlung zu untersuchen. Zum Beispiel können dort Proteine in ihrer realen Umgebung analysiert werden. Mit seiner Gruppe will Emad Aziz biologische Abläufe unter physiologischen Bedingungen untersuchen. Außerdem wird sein Know-How für Messungen zur Optimierung von Solarzellen zur Verfügung stehen. Einen Beitrag zu Emad Aziz finden Sie ebenfalls in der Sichtbar, Ausgabe 04, Seite 23, außerdem in unserer Pressemitteilung, die wir anlässich der Verleihung des diesjährigen Dale Sayers Preises an Emad Aziz herausgegeben haben. Lesen Sie außerdem die vollständige Pressemitteilung der Helmholtz-Gemeinschaft zur Auswahl der 20 Nachwuchsgruppenleiter. [...]

        78. NEWS      03.09.2009

          Magnetic monopoles detected in a real magnet

          Researchers from the Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) have, in cooperation with colleagues from Dresden (Germany), St. An-drews (UK), La Plata (Argentina) and Oxford (UK), for the first time observed magnetic monopoles and how they emerge in a real material. They publish this result in the journal Science within the Science Express web site on 3. September. Magnetic monopoles are hypothetical particles proposed by physicists that carry a single magnetic pole, either [...]

        79. NACHRICHT      18.08.2009

          Kristallisationspunkt für Nachwuchswissenschaftler

          Workshop zur synchrotron-basierten biologischen Strukturforschung am HZB in Adlershof [...]

        80. NACHRICHT      04.08.2009

          Am HZB neu entwickelter Undulator wird am Speicherring PETRA III eingebaut

          Am Donnerstag hing er noch am Kran - reisefertig verpackt. Der Undulator UE65 trat in den Abendstunden des 30. Juli seinen Weg nach Hamburg zum Deutschen Elektronen-Synchrotron (DESY) an. Das Gerät wurde von den Experten bei BESSY II am HZB speziell für den Einsatz im neuen [...]

        81. NEWS      31.07.2009

          New Chapter in the Research with Synchrotron Radiation

          Junior scientist from Berlin extents the range of application of X-ray methods and receives prestigious award.

          Dr. Emad Aziz Bekhit from the Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) is this year's recipient of the renowned Dale Sayers Award–an award presented every three years by the International X-ray Absorption Society (IXAS), hon-ouring successful junior scientists.
          The award will be presented in Camerino (Italy) on July 31, 2009 during the largest conference on research with X-rays worldwide. The award is [...]

        82. NACHRICHT      27.07.2009

          Wissenschaft zum Anfassen

          „Physik zum Frühstück“ – die traditionelle Sommervorstellung in Adlershof [...]

        83. NACHRICHT      22.07.2009

          Professor Föhlisch nimmt Ruf an

          22. Juli 2009

          Heute, am 22. Juli, hat Professor Dr. Alexander Föhlisch den Ruf an die Universität Potsdam und das Helmholtz-Zentrum Berlin angenommen. Damit wird er am HZB zukünftig das Institut für „Methoden und Instrumentierung der Forschung mit Synchrotronstrahlung“ leiten.

          Professor Föhlisch ist derzeit noch als Assistant Professor (C1) am Institut für Experimentalphysik der Universität Hamburg sowie am Deutschen Elektronen Synchrotron (DESY) tätig.

          Das Helmholtz-Zentrum Berlin freut sich über die Entscheidung von Professor Föhlisch. [...]

        84. NACHRICHT      17.07.2009

          Forscher sehen Molekulare Magneten in neuem Licht

          Erkenntnisse über Molekulare Magnete könnten künftig völlig neue Horizonte für eine neue Form der Datenspeicherung sowie der Spintronik (Elektronik mit Spins) auf der Basis einzelner Moleküle eröffnen. Eine Voraussetzung für die Verwirklichung solcher Anwendungen ist jedoch die Weiterentwicklung neuartiger Molekularer Magnete auf der Basis der genauen Kenntnis ihrer magnetischen Wechselwirkungsenergien. Alexander Schnegg und Kollegen vom HZB und der FU Berlin haben nun erstmals EPR (Elektronenparamagnetische Resonanz) Spektroskopie in Kombination mit kohärenter Synchrotron Strahlung verwendet, um die magnetischen Wechselwirkungen eines Molekularen Magneten, dem Molekül Mn12Ac, zu untersuchen. Ziel dieser Untersuchungen war die Vermessung einer besonderen quantenmechanischen Eigenschaft, dem Eigendrehimpuls (Spin). Spins richten sich ähnlich kleinen Stabmagneten in einem äußeren Magnetfeld aus und bestimmen so die Magnetisierung des Materials. Sie richten sich sowohl in einem von außen angelegten Feld, als auch an den Feldern im Inneren des Materials aus. Ändern lässt sich die Orientierung der Spins durch die Einstrahlung von Licht, wobei nur solche Lichtquanten Spinübergänge verursachen, deren Energie genau der Spinübergangsenergie entsprechen. In Molekülen verschwindet die Ausrichtung der Spins normalerweise wieder sobald das äußere Magnetfeld abgeschaltet wird. In einer kleinen, aber wichtigen Klasse von Molekülen sind die inneren Wechselwirkungen aber so stark, dass sie ein magnetisches Gedächtnis besitzen und ihre Magnetisierung auch nach Abschalten des Feldes behalten. Dies sind die Molekularen Magneten. Leider haben sie diese Eigenschaften bisher nur bei sehr tiefen Temperaturen nahe dem absoluten Nullpunkt. Um diese Eigenschaften weiter zu optimieren, um vielleicht einmal Molekulare Magneten bei Raumtemperatur einzusetzen zu können, sind vor allem Messverfahren wie das am HZB aufgebaute Experiment notwendig.  Bahnbrechend ist dabei die Kombination der Instrumentierung – zum einen die Anwendung von kohärenter Synchrotronstrahlung im TeraHertzbereich, verbunden mit einem sehr starken Magneten von 11 Tesla, und einem ultra hochauflösenden FTIR-Spektrometer. Mit dem am HZB verfügbaren so genannten low alpha Modus erreichten Schnegg und Kollegen eine 103-fach höhere Intensität im Vergleich zu klassischen Quellen. Damit ist es möglich, einen sehr breiten Frequenzbereich mit höchster Auflösung in wenigen Minuten abzufahren und somit zeitliche Änderungen magnetischer Eigenschaften festhalten zu können.  Aufgebaut wurde das Spektrometer im Rahmen des BMBF geförderten Netzwerkprojektes EPR-Solar, das es den Forschern am HZB erlaubt, mit Partnern an der FU Berlin, dem Max-Planck Institut für Eisenforschung, dem Forschungszentrum Jülich und der TU München dedizierte Methoden der EPR für den Einsatz in der Energieforschung zu entwickeln. Bisher mit so großem Erfolg, dass das BMBF ein weiteres weltweit einmaliges 263 GHz EPR-Spektrometer fördert, das Ende des Jahres ebenfalls in Adlershof in Betrieb genommen werden soll. [...]

        85. NEWS      08.07.2009

          Between Atom und Molecule

          HZB researchers observe molecule dissociation in real-time

          When two atoms join, their mass-rich nuclei are held together by sharing electrons, the chemical bond, which behave like a ductile glue. As you tear both atoms apart the glue stretches until the bond finally brakes and the molecule resolves into two atoms. Such processes are extremely fast and happen on a time-scale of less than a trillionth of a second Philippe Wernet and colleagues at HZB in collaboration with a scientist of Stockholm University studied for the first time how the electronic structure evolves or what happens to the "glue" as a molecule dissociates. (Ph. Wernet, M. Odelius, K. Godehusen, J. Gaudin, O. Schwarzkopf, and W. Eberhardt, Phys. Rev. Lett. 103, 013001 (2009))In their studies, Wernet et al. used Bromine molecules, Br2 and excited them with extremely short Laser pulses at 395 nm. This excitation turns the forces on and the nuclei start flying apart from each other. Using pulses of a second frequency - the 15th harmonic at 23.5. eV - they probed the electronic structure of the valence electrons at various delay times achieving a time resolution suitable to observe the rupture of the bond in real-time.The result is surprising: Already after 85 +/-15 fs the properties of the valence electrons resemble to those of isolated atoms, in other words: the bond has broken. During this time, the atoms moved apart only a little more than 1.5-times their distance in the molecule, less than the often assumed increase for broken bonds of 2.Together with other investigations, this study sets a benchmark for future research with high-intensity coherent soft x-ray light sources like Free Electron Lasers, testing how atoms and molecules form and break bonds. [...]

        86. NACHRICHT      06.07.2009

          Warum Dünnschichtsolarzellen aus Silizium altern

          Pressemitteilung [...]

        87. NACHRICHT      30.06.2009

          Photovoltaik-Forschung des HZB als Weltspitze bewertet

          Im Ranking eines internationalen Wissenschafts-Verlages über Forschungsleistungen auf dem Gebiet der alternativen Energien schneidet das HZB als beste europäische Forschungseinrichtung ab und belegt weltweit den 3. Platz. [...]

        88. NACHRICHT      29.06.2009

          Photovoltaik-Forschung des HZB als Weltspitze bewertet

          Im Ranking eines internationalen Wissenschafts-Verlages über Forschungsleistungen auf dem Gebiet der alternativen Energien schneidet das HZB als beste europäische Forschungseinrichtung ab und belegt weltweit den 3. Platz. [...]

        89. NACHRICHT      20.05.2009

          Millionen für die Solarenergie in Berlin-Adlershof - Bund fördert den Technologietransfer und Ausbildung in der Dünnschicht-Photovoltaik

          Ein Verbundprojekt von Forschungsinstituten und Hochschulen aus Berlin und Brandenburg hat den Zuschlag für die Förderung im Rahmen des Programms "Spitzenforschung und Innovationen in den neuen Ländern" erhalten. Das Programm wird vom Bundesministerium für Bildung und Forschung (BMBF) mit 12 Millionen Euro gefördert, der Senat Berlin fügt 25% der Förderungssumme hinzu. Die Partner im Verbundprojekt, das von den führenden Technologiefirmen der Dünnschicht-Photovoltaik unterstützt wird, bauen mit dem Geld ein Forschungszentrum zur Optimierung der Dünnschicht-Photovoltaik weiter aus. Lesen Sie dazu unsere Pressemitteilung

        90. NACHRICHT      20.05.2009

          Herausgabe der aktuellen HZB Notfallschutzbroschüre an Haushalte im Umkreis

          Die Strahlenschutzverordnung verpflichtet die Betreiber von Kernreaktoren, im Abstand von 5 Jahren die Anwohner in direkter Umgebung über Notfallschutzpläne zu informieren. In diesem Jahr ist es wieder soweit. Am 20. und 21. Mai haben wir die aktualisierte Notfallschutzbroschüre an alle umliegenden Haushalte in der Umgebung (4 km Radius) verteilt. Als Ergänzung dazu wird es am 26. und 27. Mai zwei Bürgerversammlungen geben und schließlich am 6. Juni von 14 bis 18:00 Uhr den Tag der offenen Tür im HZB Wannsee. [...]

        91. NACHRICHT      19.05.2009

          Millionen für die Photovoltaik

          Das Kompetenzzentrum "Dünnschicht- und Nanotechnologie für Photovoltaik Berlin (PVcomB)", ein Verbundprojekt von Forschungsinstituten und Hochschulen aus Berlin und Brandenburg, ist eines der Gewinnerprojekte des BMBF-Förderprogramms "Spitzenforschung und Innovationen in den neuen Ländern". Im Rahmen dieses Programms erhält das PVcomB 12 Millionen Euro, der Senat Berlin fügt 25% der Fördersumme hinzu. Die Partner im Verbundprojekt, das von den führenden Technologiefirmen der Dünnschicht-Photovoltaik unterstützt wird, bauen mit dem Geld ein Forschungszentrum zur Optimierung der Dünnschicht-Photovoltaik weiter aus. [...]

        92. NACHRICHT      19.05.2009

          HZB organisiert erfolgreich ersten Internationalen ASAXS-Workshop

          HZB organisiert erfolgreich ersten Internationalen ASAXS-Workshop [...]

        93. NACHRICHT      15.05.2009

          Supraleiter unter Druck gesetzt und damit Geheimnisse entlockt

          Wissenschaftler des Helmholtz-Zentrums Berlin für Materialien und Energie (HZB) gewinnen neue, überraschende Einblicke in das Phänomen der Supraleitung. In Kooperation mit mehreren internationalen Forschergruppen berichten sie dies in der aktuellen Ausgabe der Zeitschrift Nature Materials, die eine Online-Version als Highlight-Beitrag vorab veröffentlicht. [...]

        94. Prof Dr. Uwe Jens Nagel (HU, 1. vom links), Prof Dr. Anke Rita Pyzalla (HZB, 3. von links, freuen sich bei der Einweihung von BEST mit Prof. Dr. Recordo Manzke (HU, ganz rechts), der von Seiten der HU die Beamline mit aufgebaut hat.NACHRICHT      15.05.2009

          BEST - Eigene Strahllinie für studentische Nachwuchsforscher bei BESSY II eingeweiht

          Die  BEST-Experimentierplätze wurden ins Leben gerufen, um Studierende und junge Wissenschaftler in das Experimentieren mit Synchrotronstrahlung einzuführen und weiter zu qualifizieren; aber auch Master- und Dok