Effects of nonlinear forces on dynamic mode atomic force microscopy and spectroscopy

被引：0
|
作者：
Das, Soma [1 ]
Sreeram, P. A. [1 ]
Raychaudhuri, A. K. [1 ]
机构：
[1] SN Bose Natl Ctr Basic Sci, DST Univ Nanosci, Kolkata 700098, W Bengal, India
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2007年 / 7卷 / 06期
关键词：
atomic force microscopy; bistability; dynamic force spectroscopy; hysteresis; resonance curves;
D O I：
10.1166/jnn.2007.788
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this paper, we describe the effects of nonlinear tip-sample forces on dynamic mode atomic force microscopy and spectroscopy. The jumps and hysteresis observed in the vibration amplitude (A) versus tip-sample distance (h) curves have been traced to bistability in the resonance curve. A numerical analysis of the basic dynamic equation was used to explain the hysteresis in the experimental curve. It has been found that the location of the hysteresis in the A-h curve depends on the frequency of the forced oscillation relative to the natural frequency of the cantilever.
引用
收藏
页码：2167 / 2171
页数：5
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