Resonant Response of Rectangular AFM Cantilever in Liquid
Resonant Response of Rectangular AFM Cantilever in Liquid
复制标题
液体中矩形 AFM 悬臂梁的共振响应
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
Huang Wen
中科院分区：
文献类型：
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作者：
Chen Yuhang;Huang Wen
原子力显微镜 (AFM) 悬臂的动态特性可能会受到其工作介质的影响。我们对不同尺寸的矩形 AFM 悬臂梁浸入各种粘性流体中的共振响应进行了实验研究。测量的液体中的共振频率用于验证多个理论模型。比较Sader提出的分析模型[J.应用。物理。 84 (1998) 64]对于不同液体中的所有悬臂可以给出与实验结果最好的一致性，最大相对误差接近16%。空气和水中的共振频率之比几乎与悬臂长度无关，这与理论分析一致。
Dynamic characteristics of atomic force microscopy (AFM) cantilevers can be influenced by their working media. We perform an experimental study on the resonant responses of rectangular AFM cantilevers with different sizes immersed in various viscous fluids. The measured resonance frequencies in liquids are used to validate several theoretical models. Comparison shows the analytical model proposed by Sader [J. Appl. Phys. 84 (1998) 64] can give the best agreement with the experimental results with the maximum relative error nearly 16% for all the cantilevers in different liquids. The ratio between the resonant frequencies in air and water is almost independent of the cantilever length, which is consistent with the theoretical analyses.