Experimental validation of theoretical models for the frequency response of atomic force microscope cantilever beams immersed in fluids
Experimental validation of theoretical models for the frequency response of atomic force microscope cantilever beams immersed in fluids
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DOI：
10.1063/1.372455
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发表时间：
2000-04-15
影响因子：
3.2
通讯作者：
Sader, JE
中科院分区：
文献类型：
--
作者：
Chon, JWM;Mulvaney, P;Sader, JE
对一系列矩形原子力显微镜(AFM)悬臂梁在一系列流体中的频率响应进行了详细的测量，以检验Sader最近的理论模型的有效性和准确性[J.Appl。太棒了。84，(1998年)]。该理论模型给出了浸入粘性流体中的悬臂梁在任意驱动力激励下的频率响应。对于所考虑的所有流体，实验测量和理论计算之间的一致性非常好。此外，对著名的无粘性模型进行了评价，结果表明该模型一般不适用于原子力显微镜悬臂梁。(C)2000年美国物理研究所。[S0021-8979(00)02007-7]。
Detailed measurements of the frequency responses of a series of rectangular atomic force microscope (AFM) cantilever beams, immersed in a range of fluids, have been performed to test the validity and accuracy of the recent theoretical model of Sader [J. Appl. Phys. 84, 64 (1998)]. This theoretical model gives the frequency response of a cantilever beam, that is immersed in a viscous fluid and excited by an arbitrary driving force. Very good agreement between experimental measurements and theoretical calculations is found for all fluids considered. Furthermore, a critical assessment of the well-known inviscid model is presented, which demonstrates that this model is not applicable to AFM cantilever beams in general. (C) 2000 American Institute of Physics. [S0021-8979(00)02007-7].