MICROSCOPY Vol.45▶No.2 2010
■Researches Today

Stabilization of Cantilever Oscillation in Dynamic-mode Atomic Force Microscopy Using Time-Delayed Feedback

Kohei Yamasue and Takashi Hikihara

Abstract: We imeplemented the method of time-delayed feedback control to a commercial dynamic-mode atomic force microscope for suppressing chaotic oscillation caused by the nonlinear tip-sample interaction force. Cantilever oscillation was successfully stabilized by applying our prototype time-delayed feedback controller with the magnetic cantilever excitation method.

Key words: atomic force microscopy (AFM),cantilever,nonlinear oscillation,feedback control