Nonlinear detection of ultrasonic vibrations in an atomic force microscope

Oleg Kolosov, Kazushi Yamanaka

研究成果: Article査読

250 被引用数 (Scopus)

抄録

A new method is proposed to detect ultrasonic vibration of the samples in the Atomic Force Microscope (AFM) using nonlinearity in the tip-sample interaction force curve F(z). Small amplitude ultrasonic vibration less than 0.2 nm is detected as an average displacement of a cantilever. This Ultrasonic Force Mode (UFM) of operation is advantageous in detecting ultrasonic vibration with frequencies up to the GHz range, using an AFM cantilever with a resonant frequency below 100 kHz. It was found that a strong repulsive force is acting after an ultrasonic amplitude threshold of the is crossed, with the amplitude of this threshold depending upon the average force applied to the tip.

本文言語English
ページ(範囲)L1095-L1098
ジャーナルJapanese journal of applied physics
32
8 A
DOI
出版ステータスPublished - 1993 8月
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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