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M. Setvin:
"Non-contact AFM on Oxide Surfaces: Opportunities and Challenges";
Vortrag: im Rahmen des Seminars "Moderne Analytische Chemie", TU Wien; 29.03.2019.

Recent developments of noncontact atomic force microscopy (nc-AFM) have opened up new possibilities with a potential impact in many fields: Submolecular resolution of organic molecules, controlling the charge state of single atoms, or measuring forces involved in a single chemical bond. After a brief introduction into the concepts and challenges of the noncontact AFM, I will focus on opportunities that the technique offers in surface science and surface chemistry of metal oxides.
The resolution of the technique will be illustrated on imaging the anion and cation sublattices of TiO2 and In2O3. The possibility of controlling the adsorbate charge state offers intriguing options in surface chemistry; this will be illustrated for O2 molecules, where the chemical reactivity can be switched on or off by injecting or removing an electron. Finally, I will focus on the opportunities opened up on complex materials: Bulk-terminated perovskites KTaO3 and SrTiO3.