Regensburg 2022 – scientific programme
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O: Fachverband Oberflächenphysik
O 34: Poster Tuesday: Scanning Probe Techniques 2
O 34.7: Poster
Tuesday, September 6, 2022, 11:00–13:00, P3
Inspecting non-linearities in scanning force microscopy — •Lukas Böttcher1, Anna Dittus2, Jens Starke2, Ingo Barke1, and Sylvia Speller1 — 1Institute of Physics, University of Rostock — 2Institute of Mathematics, University of Rostock
In dynamic force microscopy bistable states are often encountered. This includes two stable states at small and large amplitude flanking one unstable state at intermediate amplitude, separating two attracting regions. Our aim is to investigate the behavior of oscillating cantilevers in dynamic force microscopy [1,2]. We acquired distance dependent frequency sweeps of amplitude and phase. From this we determined saddle-node branches with cusps and compare the behavior with simulations.
[1] A.C. Boccara et al., Applied Physics Letters 58 (1991).
[2] Robert W. Stark, Materials Today 13 (2010)