20091228_204717.m2ts

a force gradient is detected in a dynamic mode atomic force microscope. The oscillation frequency changes depending on the force gradient that is simulated by magnetic fields. The cantilever is a stainless steel ruler. Its bend is detected by a disk-shaped piezo-sounder glued on its top. The signal is amplified by a 3-stage inverted Darlington circuit and fedback to an air-core coil that attracts a permanent magnet attached on the bottom side of the cantilever. ... AFM cantilever force ...
Author: qhodo; Tags: AFM cantilever force-gradient FM


















