Carl-Ramsauer-Award for excellent dissertation
Dr. Raphael Jay has received this year's Carl-Ramsauer-Prize of the German Physical Society of Berlin. © Max Threlfall
Dr. Raphael Jay has received this year's Carl-Ramsauer-Prize of the German Physical Society of Berlin (DPGzB). The prize honours outstanding dissertations in physics and related fields and will be awarded during a festive colloquium on 18 November 2020 in the Magnus-Haus.
Dr. Raphael Jay studied ultrafast charge transfer dynamics in iron complexes during his doctorate at the University of Potsdam under the supervision of Prof. Alexander Föhlisch. In the context of the EDAX project at BESSY II, he carried out measurements with ultra-short X-ray pulses, whereby the experimental infrastructure was also used for measurements at the Free Electron Laser LCLS in Stanford.
The complex measurement results were analysed within the HZB Virtual Institute "Dynamic Pathways in multimensional Landscapes" in collaboration with Stockholm University. In future, this type of experiment will also be possible at the European XFEL in Hamburg, which was developed in parallel within the EDAX project. Raphael Jay is now continuing his scientific work at the University of Uppsala.
- Special prize by Jugend Forscht awarded to former school internShaoxuan Wang has won a special prize in the Jugend Forscht competition for her project ‘Smart Capsules – intelligent microcapsules for glucose-dependent insulin release’. She designed the project as a “special achievement” for her A-levels. To carry out the experimental work, Shaoxuan was able to spend a further two weeks in the laboratory at the HZB Institute for Electrochemical Energy Storage, where she had completed a school internship two years earlier.
- BESSY II: New sample environment allows glimpse into thermocatalytic processesA novel measurement cell allows, for the first time, soft and hard X-ray investigations under high pressures of up to 20 bar and temperatures of up to 400°C. This provides new insights into thermocatalytic processes, such as the Fischer-Tropsch synthesis for producing synthetic fuels. The development of the measurement cell is considered a significant achievement within the Care-O-Sene project.
- Magnetic imaging: Micro-flowers increase the local magnetic fieldMaterials with magnetic nanostructures have many potential applications such as in spintronics. To explore such materials, nanoscale magnetic-sensitive imaging techniques are very useful, but up to now only weak magnetic fields could be applied during the imaging process. Now an international collaboration led by Dr. Sergio Valencia, HZB, has developed an approach that overcomes this limitation. The team designed tiny magnetic flux concentrators (MFCs), into which the sample is placed. The geometry of the MFCs resembles a flower with a number of petals which focus the applied magnetic field into its center. This greatly expands the magnetic field range available during imaging, and so the range of magnetic systems that can be investigated. The micro-flowers, enhancing magnetic fields locally, can find application in different nanometric magnetic microscopy techniques.