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Image: Markus Scholz | Leopoldina
Year of election: | 2015 |
Section: | Chemistry |
City: | Vienna |
Country: | Austria |
Research Priorities: Surface physics, scanning tunneling/force microscopy, surface spectroscopy, molecular processes at surfaces, metal oxides, ternary compounds
Ulrike Diebold is an Austrian physicist whose research focuses on surface physics. Using scanning tunneling microscopy and surface spectroscopy techniques, she investigates the surface structures and molecular processes of metal oxides. Metal oxide surface processes are particularly important for industrial as well as environmental protection applications and energy storage.
She investigates processes on surfaces of metal oxide. They can be used as sensors for specific gases and their surfaces and interfaces play an important role in catalytic converters, batteries and fuel cells. Metal oxides are compounds of metals and oxygen. Oxide surfaces often show defects, such as atom vacancies. In turn, such defects as well as the processes on the surface often influence the inside of the material. Ulrike Diebold analyses surfaces one atom at a time to find out what occurs, using scanning tunneling microscopy (STM) and surface spectroscopy techniques. She was the first researcher to make material defects at atomic level visible using scanning tunneling microscopy. Subsequently, she was able to observe chemical reactions triggered by these defects molecule by molecule. In cooperation with other research groups, she has modelled the results obtained as part of her experiments in order to gain a better understanding of the reactions on the surface.
Together with her team, Ulrike Diebold has also investigated titanium dioxide (TiO2), which is being used as coating for implants such as hip joints. She was interested in the effects of titanium dioxide as a photocatalyst, as photocatalysts react to light – making it possible to regulate their activity using light. Based on her research, a coating for cotton fibres has been developed which independently decomposes stains when exposed to sunlight.
Furthermore, she is conducting research on compounds made up of three different elements (ternary compounds), the interface between solid and liquid phases, as well as working on creating high-resolution microscope images of surfaces even in liquid solutions.