Dynamics of tapping mode atomic force microscopy in liquids: Theory and experiments

被引：99

作者：

Basak, Sudipta ^{[1
]}

Raman, Arvind ^{[1
]}

机构：

[1] Purdue Univ, Sch Mech Engn, Birck Nanotechnol Ctr, W Lafayette, IN 47907 USA

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2760175

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A mathematical model is presented to predict the oscillating dynamics of atomic force microscope cantilevers with nanoscale tips tapping on elastic samples in liquid environments. Theoretical simulations and experiments performed in liquids using low stiffness probes on hard and soft samples reveal that, unlike in air, the second flexural mode of the probe is momentarily excited near times of tip-sample contact. The model also predicts closely the tip amplitude and phase of the tip at different set points. (c) 2007 American Institute of Physics.

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页数：3

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