Method and device for the contactless excitation of torsional vibrations in a one-sidedly clamped-in spring cantilever of an atomic force microscope

摘要

A method for exciting free torsional vibrations a spring cantilever, which is clamped in on one side and has a longitudinal extension, of an atomic force microscope (AFM) is disclosed. The invention providesby the one-sidedly clamped-in spring cantilever being placed at a distance over a surface between which and the spring cantilever there is an acoustic coupling medium, by the surface being set into oscillations which are oriented laterally to the surface and are polarized linearly along an oscillation direction, andby the polarization axis given by the oscillation direction being oriented perpendicular to the longitudinal extension of the spring cantilever.