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arXiv 1202.5217cond-mat.mes-hall
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非线性动力学在定量原子力显微镜中的作用

The Role of Nonlinear Dynamics in Quantitative Atomic Force Microscopy

Daniel Platz, Daniel Forchheimer, Erik A. Tholén, David B. Haviland

摘要:

力的测量与原子力显微镜(AFM)的各种方法进行了比较,他们的能力,准确地确定从分析的非线性悬臂梁运动的尖端表面力。它解释了如何互调,或多个驱动音的频率混合的非线性尖端表面力,可以用来集中在一个狭窄的频带内的频率附近的杠杆基本共振,力测量的准确性和灵敏度是最大的非线性运动。两种不同的方法重建针尖表面力的互调谱解释。从互调谱重建保守和耗散尖端-表面相互作用的模拟数据证明。

英文摘要:

Various methods of force measurement with the Atomic Force Microscope (AFM) are compared for their ability to accurately determine the tip-surface force from analysis of the nonlinear cantilever motion. It is explained how intermodulation, or the frequency mixing of multiple drive tones by the nonlinear tip-surface force, can be used to concentrate the nonlinear motion in a narrow band of frequency near the cantilevers fundamental resonance, where accuracy and sensitivity of force measurement are greatest. Two different methods for reconstructing tip-surface forces from intermodulation spectra are explained. The reconstruction of both conservative and dissipative tip-surface interactions from intermodulation spectra are demonstrated on simulated data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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