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O: Fachverband Oberflächenphysik

O 63: Posters: Scanning Probe Methods

O 63.15: Poster

Wednesday, April 2, 2014, 17:30–21:00, P2

Dynamic Friction Force Microscopy on antimony nanoparticles — •Thomas Göddenhenrich, Felix Mertens, and André Schirmeisen — Institut für Angewandte Physik, Justus-Liebig-Universität Gießen, D-35392 Gießen

Dynamic Friction Force Microscopy is a valuable scanning probe technique for detection of friction properties. The nonlinear interaction between tip and sample induces a sensitive signal containing the friction information for different tip-sample contacts. The third harmonic lock-in detection on antimony nanoparticles clearly reveals the signal contrast dependence on the modulation amplitude and frequency. Therefore the detection of frictional information of the sample system requires a modulation frequency spectrum to receive the basic information of the damped system between tip and sample, namely the qualitiy factor Q and optimal excitation frequency.