An improved dynamic model of tuning fork probe for scanning probe microscopy

被引:6
作者
Ng, B. P. [1 ,2 ]
Zhang, Y. [1 ]
Kok, S. W. [1 ]
Soh, Y. C. [2 ]
机构
[1] Singapore Inst Mfg Technol, Singapore 638075, Singapore
[2] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
关键词
Dynamic modeling; scanning probe microscopy; system identification; tuning fork probe; SENSOR;
D O I
10.1111/j.1365-2818.2009.03160.x
中图分类号
TH742 [显微镜];
学科分类号
摘要
This paper presents a two coupled oscillators model to describe the dynamics of a tuning fork with a probe attached. The two coupled oscillators are unbalanced only in their effective masses and the damping ratios. By applying a frequency domain system identification approach in experimental investigation of various probe attachment cases, a good accuracy of the model is demonstrated. The effectiveness of the model is further demonstrated in quantitative analysis of the noise performance and the sensitivity of force sensing with a tuning fork probe. Compared with existing models, the proposed model can more accurately characterize the dynamics of a tuning fork probe.
引用
收藏
页码:191 / 195
页数:5
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