Stable operation mode for dynamic noncontact atomic force microscopy

被引:83
作者
Ueyama, H [1 ]
Sugawara, Y [1 ]
Morita, S [1 ]
机构
[1] Osaka Univ, Fac Engn, Dept Elect Engn, Suita, Osaka 565, Japan
来源
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 1998年 / 66卷 / Suppl 1期
关键词
D O I
10.1007/s003390051149
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We investigated the force interaction between tip and surface in the constant-vibration mode and the constant-excitation mode. We found that the distance dependence of the frequency shift reverses in the constant-vibration mode, but it does not in the constant-excitation mode. The repulsive force interaction in the cyclic-contact region weakens in the constant-excitation mode because of the decrease of the vibration amplitude of the cantilever, whereas the repulsive force interaction does not weaken in the constant-vibration mode. Besides, it is quite effective in avoiding the degradation of the initial sharp tip and the destruction of the sample surface when the sudden contact between the tip and the sample surface occurs. We conclude that the constant-excitation mode is stable and gentle compared with the constant-vibration mode.
引用
收藏
页码:S295 / S297
页数:3
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