- 23.12.2016 (german)
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! Hier geht es zu unserem kleinen Rückblick auf 2016. [...].
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. [...].
Experiments at BESSY II allow in situ analysis of water management which is helpful for further improvements of fuel cells
HZB scientists have teamed up with partners of 3M Company in order to explore the water management in an alternative proton exchange membrane type, called PFIA. The experiments have been conducted using the infrared facilities of BESSY II synchrotron to reveal how water is retained even at dry conditions in PFIA. The observations explain why PFIA membranes are superior to the widely used NAFIONTM membranes at higher temperatures and low humidity. [...].
- 19.12.2016 (german)
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.
The new group is working to prolong the life span of perovskite solar cells to 25 years and longer.
Dr. Antonio Abate from the University of Fribourg, Switzerland, is putting together a Helmholtz Young Investigator Group at Helmholtz-Zentrum Berlin. He came out on top in a highly competitive selection process of the Helmholtz Association and will now receive 300,000 euros per year in funding over a period of five years. Dr. Antonio Abate will be studying the materials and interfaces of perovskite solar cells in order to improve their long-term stability. [...].
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. [...].
- 14.12.2016 (german)
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. [...].
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. [...].
- 08.12.2016 (german)
Sieben Helmholtz-Zentren arbeiten an Systemlösungen für die künftige Energieversorgung
Die Energiewende ist eine der zentralen Herausforderungen der Zukunft. Die Energieforschung der Helmholtz-Gemeinschaft besitzt vielseitige Kompetenzen, um dieses ambitionierte Ziel umzusetzen. Auf Einladung der Sprecher von vier Helmholtz-Forschungsprogrammen und organisiert vom Helmholtz-Zentrum Berlin (HZB) trafen sich nun Expertinnen und Experten aus sieben Helmholtz-Zentren in Berlin, um die verschiedenen Forschungsfelder stärker zu bündeln und Systemlösungen für die zukünftige Energielandschaft zu identifizieren. Zwei renommierte Sprecher von Siemens (Professor Michael Weinhold) und der RWTH Aachen (Professor Uwe Sauer) bereicherten die Diskussionen mit externer Expertise. [...].
- 08.12.2016 (german)
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. [...].
Pioneering new areas of physics through measurement of quantum effects
Nobel Prize in Physics demonstrates close interweave of predictions and experimental evidence from large-scale scientific facilities. Researcher in Berlin recalls exciting experiments in an important new subject area. [...].
- 01.12.2016 (german)
Das HZB hat kürzlich gemeinsam mit Universitäten und Hochschulen aus Berlin, Potsdam und Bielefeld mehrere Berufungsverfahren erfolgreich abgeschlossen. Mehr erfahren Sie in diesem Überblick: [...].
Magnetic ground states spectroscopically ascertained
An international team from Sweden, Japan, and Germany has set a new temperature record for what are known as quadrupole ion traps that capture electrically charged molecular ions. They succeeded in cooling about ten million ions down to 7.4 K (approx. -265.8 degrees Celsius) using a buffer gas. That is a new record. Previously it was only possible to cool down about one thousand ions to 7.5 K using buffer gas. However, a thousand ions are not nearly enough for spectroscopic analyses. The ion trap with this new method provides a new opportunity to use cryogenic X-ray spectroscopy to study the magnetism and ground states of molecular ions. This is the foundation needed to develop new materials for energy-efficient information technologies. The work has been published in the Journal of Chemical Physics.
Singlet fission could have a central role in the future development of solar cells.
Physicists from HZB, Freie Universität Berlin and University of Cambrigde have successfully employed a powerful technique for studying electrons generated through singlet fission, a process which it is believed will be key to more efficient solar energy production in years to come. Their approach, reported in the journal Nature Physics, employed lasers, microwave radiation and magnetic fields to analyse the spin of excitons, which are energetically excited particles formed in molecular systems. Their experiments have been performed at the Joint EPR Lab, which is jointly funded by HZB and FU Berlin. Their results are published in Nature Physics. [...].
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. [...].
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. [...].
- 17.11.2016 (german)
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. [...].
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". [...].
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. [...].
Federal Ministry of Economics funds “speedCIGS” with 4.7 million euros
A project consortium from research and industry involving the Competence Centre for Photovoltaics Berlin (PVcomB) of Helmholtz-Zentrum Berlin has been granted a major third-party-funded project by the Federal Ministry of Economics. The project “speedCIGS” is to be funded with 4.7 million euros over four years, of which 1.7 million goes to HZB. The project partners will use this money to accelerate the manufacturing process for CIGS thin-film solar cells and thus make the technology more attractive to industry.
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". [...].
Advancing energy materials research together
The heads of the HZB and the Australian Nuclear Science and Technology Organisation (ANSTO) recently have considerably extended the Memorandum of Understanding existing between the two institutions since 2015. They intend to further enhance their cooperation particularly in the area of energy materials research.
ANSTO CEO Adi Paterson, Group Executive Nuclear Science and Technology and Landmark Infrastucture Simone Richter, HZB Scientific Director Prof Anke Kaysser-Pyzalla and HZB Executive Director of Finance and Administration Thomas Frederking - See more at: http://www.ansto.gov.au/AboutANSTO/MediaCentre/News/ACS108458#sthash.SHvw3252.dpuf [...].
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. [...].
Federal Minister of Research Prof. Johanna Wanka opened the joint laboratory of Helmholtz-Zentrum Berlin and the Max Planck Society.
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. [...].
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. [...].
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. [...].
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. [...].
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. [...].
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. [...].
- 30.09.2016 (german)
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“. [...].
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. [...].
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 (Structure (2016)). 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. [...].
- 26.09.2016 (german)
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. [...].
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. [...].
- 15.09.2016 (german)
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. Mitmachen bei der Aktion ist immer noch möglich. Hier geht`s zur Anmeldung. [...].
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. [...].
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. [...].
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.
- 06.09.2016 (german)
Am 8. September lädt die Wissenschaftsetage des Bildungsforums 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. [...].
- 01.09.2016 (german)
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. [...].
Mean free path of electron scattering in liquid water considerably shorter than supposed
Dr. Robert Seidel from the Institute for Methods of Material Development (EM-IMM) won the poster prize for “Water & Aqueous Solutions" at the renowned Gordon Research Conference (GRC) in Holderness, USA at the beginning of August. Associated with the award was also the opportunity to present his results in a 15-minute talk at the GRC. Seidel presented his newest findings on angular distribution of photoelectrons in liquid water. He obtained these findings with the LiquidjetPES and SOL³PES liquid microjet facilities at the UE52-SGM beamline of BESSY II. [...].
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. [...].
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. [...].
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.
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. [...].
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 in the presence of construction firms, guest VIPs, and HZB staff. [...].
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. [...].
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. [...].
- 22.07.2016 (german)
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.
- 22.07.2016 (german)
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.
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. [...].
From 13 to 19 July 2016, the artist will be recording sounds on location
The electron storage ring BESSY II is the backdrop for an extraordinary art project. Sound artist Gerriet K. Sharma of the University of Music and Performing Arts Graz will translate the principles of accelerator physics into three-dimensional acoustic compositions. From 13 to 19 July 2016, the artist will be on location to record sounds directly in the electron storage ring. [...].
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. [...].
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. [...].
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.
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 2016. [...].
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. [...].
Researchers retain exclusive access to their data for five years
The instruments at the large facilities of Helmholtz-Zentrum Berlin produce large quantities of raw data. These data must be stored long-term and should also be openly accessible. The rules for handling such data at HZB are now defined in its data policy. The management finalized the policy on 14 June 2016. It stipulates that, as a rule, raw data should become openly accessible after five years. [...].
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”. [...].
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. [...].
Physicists at BESSY II of Helmholtz-Zentrum Berlin (HZB) studied an artificial structure composed of alternating layers of ferromagnetic and superconducting materials. Charge density waves induced by the interfaces were found to extend deeply into the superconducting regions, indicating new ways to manipulate superconductivity. The results are now being published in Nature Materials. [...].
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. [...].
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. [...].
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. [...].
- 13.06.2016 (german)
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. [...].
- 13.06.2016 (german)
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.
- 08.06.2016 (german)
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. [...].
- 02.06.2016 (german)
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. [...].
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. [...].
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. [...].
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. [...].
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. [...].
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.
Please find all information and the submission site for your applications at /events/autumn-school/index_en.html [...].
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. [...].
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. [...].
- 28.04.2016 (german)
Raus aus der Schule, rein ins Labor: Dem Aufruf folgten rund 100.000 Mädchen zum bundesweiten Aktionstag „Girls‘ Day“ und wählten aus insgesamt 9.500 verschiedenen Angeboten. 70 von ihnen, im Alter von 9 bis 15 Jahren, kamen an das Helmholtz-Zentrum Berlin. Sie informierten sich, welche naturwissenschaftlichen und technischen Berufe man in einem Forschungszentrum braucht – und schlüpften in Workshops selbst in die Rolle einer Forscherin oder Programmiererin. [...].
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. [...].
- 22.04.2016 (german)
Das HZB schärft sein Profil. In unserer aktuellen Ausgabe stellen wir Ihnen die Strategie und Vision des HZB sowie wichtige Ziele und Handlungsfelder vor. Außerdem berichten wir über Menschen am Zentrum, Open Access und Soziale Netzwerke für den Beruf. Weitere Themen: [...].
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. [...].
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. [...].
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. [...].
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. [...].
- 11.04.2016 (german)
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. „Battle den Horst“, 14. April, 18.30 Uhr, Eintritt: 4 Euro (Die Veranstaltung ist ausverkauft)
Surprising discovery at BESSY II: the adsorption capacity of MOFs does not rise automatically with increasing pressure
Metal-organic frameworks (MOFs) can store gases such as methane in their surface interstices, or pores. Now teams from the Technische Universität Dresden and Helmholtz-Zentrum Berlin (HZB) have precisely observed the process of gas absorption into these pores under positive pressure at BESSY II for the first time. They discovered a surprising effect: for MOFs reaching a specific pressure level, the gas already adsorbed eruptively escapes because the pores suddenly contract. This suggests many new applications. These observations were possible because the scientists have developed a specialised sample environment. It allows them to adjust the temperature and gas pressure as well as determine the quantity of gas adsorbed during the X-ray studies conducted with the KMC-2 beamline at BESSY II. The results have now been published in Nature. [...].
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). [...].
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. [...].
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. [...].
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. [...].
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. [...].
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. [...].
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.
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. [...].
- 28.01.2016 (german)
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. [...].
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. [...].
ZSW and HZB present current data – with new opportunities for Europe’s solar industry
The overwhelming majority of photovoltaic installations world wide are equipped with solar cells made of crystalline silicon. Thanks to huge progress in CIGS-thin-film technologies this could change in the future, according to an analysis by the Centre for Solar Energy and Hydrogen Research Baden-Württemberg (ZSW) and the Helmholtz-Zentrum Berlin für Materialien and Energy (HZB) along with their international partners. This could open up major opportunities for the solar industry in Europe, the experts report in their whitepaper, published at www.cigs-pv.net. [...].
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”. [...].
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". [...].
Dr. Rowan W. MacQueen will come in May 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. [...].
Dr. Kathrin Maria Aziz-Lange starts with her new a Helmholtz Young Investigator Group (YIG) addressing the topic of solar fuels at Helmholtz-Zentrum Berlin (HZB). She 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. [...].