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Report on the participation of the Weitzel working group at the annual meeting of the German Bunsen Society for Physical Chemistry, Bunsentagung 2025 in Leipzig

Weitzel group at the Bunsen-Tagung 2025: from left to right: Karl-Michael Weitzel, Melanie Fritz, Martin Schäfer, Sebastian Brötz, Timo Kassubek, Archana Kumari, Jon Both, missing on the picture: Kevin Rein)

The Weitzel working group was represented at the Bunsentagung 2025 in Leipzig with a total of 8 participants, 5 posters and 3 presentations. The topics of the talks and posters were diverse and reflected the full range of research topics of the group:

Jon Both reported on photoelectron eliptic dichroism in phenylalanine, Sebastian Brötz presented his work on the in-situ analysis of isomeric mixtures using fs-laser ionization-mass-spectrometry, and Timo Kassubek spoke about the enormous increase in electrical conductivity in SrTiO3 under the influence of proton injection.

In the poster session, Kevin Rein presented his measurements of concentration-replacement zones in glassy materials using secondary ion mass spectrometry (ToF-SIMS), nuclear reaction analysis (NRA) and nanoindentation, comparing the three methods. Martin Schäfer presented a program suite for the description of time-dependent electrochemical transport and the calculation of concentration-depth profiles using Nernst-Planck-Poisson calculations.  Archana Kumari showed the temperature dependence of the conductivity in YSZ crystals, which revealed an unexpected minimum at 90°C. Melanie Fritz presented progress in the development of the CAIT technique, under the condition that more than just an ion beam is used. Dominik Plamper's work  on the elucidation of reaction mechanisms in ion-molecule reactions was also presented in a poster.

We were particularly pleased that Sonja Bohl's Master's thesis was honored by the German Bunsen Society for her work on ion-molecule reactions. Sonja completed her Master's thesis in the first half of 2024 in the Weitzel group. We congratulate her warmly. A detailed article will follow at a later date.

The Bunsentagung 2025 provided the Weitzel group with an excellent opportunity to present their research results, engage in stimulating discussions and gain valuable impetus for future work.