Regensburg 2022 – scientific programme

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O: Fachverband Oberflächenphysik

O 34: Poster Tuesday: Scanning Probe Techniques 2

O 34.6: Poster

Tuesday, September 6, 2022, 11:00–13:00, P3

Functionalized Tips in low-temperature AFM/STM - Fabrication and Application — •Lorenz Brill, Marco Grünewald, Roman Forker und Torsten Fritz — Friedrich-Schiller-Universität, Jena, Germany

AFM with functionalized tips has been an emergent and fast growing field in the last couple of years. The chemical passivation of the metal tip achieved via functionalization allows for images with atomic or intramolecular resolution to be recorded.

In our contribution, we detail the fabrication of CO-functionalized tips with a commercial low-temperature STM/AFM by Specs Surface Nano Analysis GmbH and demonstrate atomic resolution on a Cu(111)-surface. Furthermore, we show structure elucidation of organic molecular islands on the Cu(111)-substrate via atomic resolution images.

This technique shows great promise for further investigations, especially in areas not accessible via conventional STM, e.g. detailed structure analysis of 1,4-benzoquinone on metal substrates.