DAPHNE - Data for Photon and Neutron Experiments
© Grafik: DFG
Data in the petabyte range are produced annually at large-scale facilities. This research data must be stored for at least ten years. Now 19 scientific institutions in Germany, among them HZB, aim to develop common standards for software, data exchange and data repositories to make research data permanently available. The DAPHNE4NFDI project will be funded over the next five years as part of the National Research Data Infrastructure and is coordinated by DESY.
In research data management the FAIR criteria do apply: Data must be Findable, Accessible, Interoperable and Reusable, for humans as well as for algorithms. The connection to artificial intelligence methods or machine learning are also part of the task.
HZB is contributing its expertise in research data management to the project. HZB has already participated in European projects such as PaNDATA, from which the data repository ICAT emerged, as well as in Helmholtz initiatives, which resulted in the HMC Hub matter being located at HZB.
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- Metallic nanocatalysts: what really happens during catalysisUsing a combination of spectromicroscopy at BESSY II and microscopic analyses at DESY's NanoLab, a team has gained new insights into the chemical behaviour of nanocatalysts during catalysis. The nanoparticles consisted of a platinum core with a rhodium shell. This configuration allows a better understanding of structural changes in, for example, rhodium-platinum catalysts for emission control. The results show that under typical catalytic conditions, some of the rhodium in the shell can diffuse into the interior of the nanoparticles. However, most of it remains on the surface and oxidises. This process is strongly dependent on the surface orientation of the nanoparticle facets.
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