HZB and TU Berlin: New joint research group at BESSY II
Prof. Birgit Kanngießer heads a joint research group on X-ray methods, which is funded by TU Berlin and HZB. © Martin Weinhold
Birgit Kanngießer is setting up a joint research group to combine X-ray methods in laboratories and at large-scale facilities. In particular, the physicist wants to investigate how X-ray experiments on smaller laboratory instruments can be optimally complemented with more complex experiments that are only possible at synchrotron sources such as BESSY II.
Prof. Dr. Birgit Kanngießer is professor of analytical X-ray Physics at the Technische Universität Berlin, where she also heads a large research group. Together with the Max Born Institute she has build up BLiX (Berlin laboratory for innovative X-ray technologies), which brings established X-ray methods from the synchrotron into the laboratory. At BESSY II she was involved as one of the first users from the early on.
Now HZB and TU Berlin are funding a joint research group headed by Birgit Kanngießer to strengthen this cooperation. This should also accelerate the exchange of knowledge and technology between BESSY II and university laboratories.
The joint research group is called 'Combined X-ray methods at BLiX and BESSY II - SyncLab'. On the TU Berlin side, the Berlin laboratory for innovative X-ray technologies (BLiX) is integrated. Kanngießer will initially focus on evaluating how time-resolved measurements using near-edge X-ray spectroscopy in the soft X-ray range on smaller instruments and at BESSY II could complement each other. Further analytical and imaging X-ray methods are to follow in the future.
- BESSY II: Insight into ultrafast spin processes with femtoslicingAn international team has succeeded at BESSY II for the first time to elucidate how ultrafast spin-polarised current pulses can be characterised by measuring the ultrafast demagnetisation in a magnetic layer system within the first hundreds of femtoseconds. The findings are useful for the development of spintronic devices that enable faster and more energy-efficient information processing and storage. The collaboration involved teams from the University of Strasbourg, HZB, Uppsala University and several other universities.
- Battery research: visualisation of aging processes operandoLithium button cells with electrodes made of nickel-manganese-cobalt oxides (NMC) are very powerful. Unfortunately, their capacity decreases over time. Now, for the first time, a team has used a non-destructive method to observe how the elemental composition of the individual layers in a button cell changes during charging cycles. The study, now published in the journal Small, involved teams from the Physikalisch-Technische Bundesanstalt (PTB), the University of Münster, researchers from the SyncLab research group at HZB and the BLiX laboratory at the Technical University of Berlin. Measurements were carried out in the BLiX laboratory and at the BESSY II synchrotron radiation source.
- New instrument at BESSY II: The OÆSE endstation in EMILA new instrument is now available at BESSY II for investigating catalyst materials, battery electrodes and other energy devices under operating conditions: the Operando Absorption and Emission Spectroscopy on EMIL (OÆSE) endstation in the Energy Materials In-situ Laboratory Berlin (EMIL). A team led by Raul Garcia-Diez and Marcus Bär showcases the instrument’s capabilities via a proof-of-concept study on electrodeposited copper.