dr. C. Baeumer MSc (Chris)

I am passionate about materials science education and research - at the boarder between physics, chemistry and engineering. I am driven by scientific curiosity for a fundamental understanding of materials and processes and I believe that ground-breaking science can and should address great societal changes. Currently, my research focuses on the solid/liquid interface, in particular for electrocatalysts that enable energy conversion and sustainable synthesis of chemicals and chemical fuels.

Besides my position at the UT, I am also an associated researcher at the Peter Grünberg Institut at Forschungszentrum Jülich in Germany.

Before joining the UT in 2020, I was a Marie Skłodowska Curie Fellow at Stanford University and RWTH Aachen University. I obtained my Ph.D in physics at RWTH Aachen University and Forschungszentrum Jülich in 2016 and my M.Sc. in materials science at the University of Illinois at Urbana-Champaign in 2013.

Engineering & Materials Science

# Electrolysis
# Oxidation-Reduction
# Oxides
# Oxygen Vacancies
# Perovskite
# Thin Films

Chemistry

# Dioxygen
# Oxide

Faculty of Science and Technology (TNW), Inorganic Materials Science (IMS)

More information about our research in the link:

https://www.utwente.nl/en/tnw/ims/research/research_baeumer/

Kersell, H., Weber, M. L., Falling, L., Lu, Q. , Baeumer, C., Shirato, N., Rose, V., Lenser, C., Gunkel, F., & Nemsak, S. (2022). Evolution of surface and sub-surface morphology and chemical state of exsolved Ni nanoparticles. Faraday discussions, 236, 141-156. https://doi.org/10.1039/d1fd00123j

Heymann, L., Weber, M. L., Wohlgemuth, M., Risch, M., Dittmann, R. , Baeumer, C., & Gunkel, F. (2022). Separating the Effects of Band Bending and Covalency in Hybrid Perovskite Oxide Electrocatalyst Bilayers for Water Electrolysis. ACS Applied Materials and Interfaces, 14(12), 14129-14136. https://doi.org/10.1021/acsami.1c20337

Baeumer, C., Liang, A. Y. L., Trstenjak, U., Lu, Q., Waser, R., Mefford, J. T., Gunkel, F., Nemšák, S., & Chueh, W. C. (2021). Carbonate formation lowers the electrocatalytic activity of perovskite oxides for water electrolysis. Journal of Materials Chemistry A, 9(35), 19940-19948. https://doi.org/10.1039/d1ta03205d

Martins, H. P., Conti, G., Cordova, I., Falling, L., Kersell, H., Salmassi, F., Gullikson, E., Vishik, I. , Baeumer, C., Naulleau, P., Schneider, C. M., & Nemsak, S. (2021). Near total reflection x-ray photoelectron spectroscopy: Quantifying chemistry at solid/liquid and solid/solid interfaces. Journal of physics D: applied physics, 54(46), [464002]. https://doi.org/10.1088/1361-6463/ac2067

Yan, H., Börgers, J. M., Rose, M. A. , Baeumer, C., Kim, B., Jin, L., Dittmann, R., & Gunkel, F. (2021). Stoichiometry and Termination Control of LaAlO₃/SrTiO₃ Bilayer Interfaces. Advanced materials interfaces, 8(3), [2001477]. https://doi.org/10.1002/admi.202001477

Baeumer, C. (2021). Operando characterization of interfacial charge transfer processes. Journal of Applied Physics, 129(17), [170901]. https://doi.org/10.1063/5.0046142

Siegel, S. , Baeumer, C., Gutsche, A., Witzleben, M., Waser, R., Menzel, S., & Dittmann, R. (2021). Trade‐Off Between Data Retention and Switching Speed in Resistive Switching ReRAM Devices. Advanced electronic materials, 7(1), [2000815]. https://doi.org/10.1002/aelm.202000815

Baeumer, C., Li, J., Lu, Q., Liang, A. Y-L., Jin, L., Martins, H. P., Duchoň, T., Glöß, M., Gericke, S. M., Wohlgemuth, M. A., Giesen, M., Penn, E. E., Dittmann, R., Gunkel, F., Waser, R., Bajdich, M., Nemšák, S., Mefford, J. T., & Chueh, W. C. (2021). Tuning electrochemically driven surface transformation in atomically flat LaNiO ₃ thin films for enhanced water electrolysis. Nature materials, 20(5), 674-682. https://doi.org/10.1038/s41563-020-00877-1

Xu, C., Heinemeyer, F., Dittrich, A. , Bäumer, C., & Reineke-Koch, R. (2021). In situ spectroscopic ellipsometry as a pathway toward achieving VO₂stoichiometry for amorphous vanadium oxide with magnetron sputtering. AIP advances, 11(3), [035126]. https://doi.org/10.1063/5.0041116

Hensling, F. V. E. , Baeumer, C., Rose, M. A., Gunkel, F., & Dittmann, R. (2020). SrTiO₃ termination control: a method to tailor the oxygen exchange kinetics. Materials Research Letters, 8(1), 31-40. https://doi.org/10.1080/21663831.2019.1682705

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