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首页> 外文期刊>Journal of Computational and Nonlinear Dynamics >Influence of Local Material Properties on the Nonlinear Dynamic Behavior of an Atomic Force Microscope Probe
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Influence of Local Material Properties on the Nonlinear Dynamic Behavior of an Atomic Force Microscope Probe

机译：局部材料特性对原子力显微镜探针非线性动力学行为的影响

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摘要

In this paper, a study of the characteristics of period-doubling bifurcations in the dynamic behavior of an atomic force microscope probe for off-resonance excitation is presented. Using a three-mode approximation and excitation at two-and-a-half times the fundamental frequency, the relationship between the characteristics of the period-doubling bifurcation and the material properties is studied by using numerical simulations. Simulations are first used to successfully reproduce nonlinear response data collected experimentally by using a commercial atomic force microscope system and then to conduct a parametric study in order to examine the influence of variations in other system parameters on the relationship. These parameters are the excitation magnitude, the damping level, the cantilever stiffness, and the characteristics of the force model. Based upon the results of the parametric study, a new operation mode for obtaining localized material properties through an efficient scanning process is proposed. A preliminary scan simulation demonstrates the successful implementation of the relationship and its potential for providing localized material property information with nanoscale resolution.
机译：在本文中，研究了用于非共振激发的原子力显微镜探针的动力学行为中倍频分叉的特性。使用三模逼近和以两倍半基频激励，通过数值模拟研究了倍频分叉特性与材料特性之间的关系。首先使用仿真来成功重现通过使用商业原子力显微镜系统实验收集的非线性响应数据，然后进行参数研究以检查其他系统参数的变化对关系的影响。这些参数是激励幅度，阻尼水平，悬臂刚度和力模型的特征。基于参数研究的结果，提出了一种通过有效的扫描过程获得局部材料性能的新操作模式。初步的扫描模拟证明了该关系的成功实现及其在提供纳米级分辨率的局部材料特性信息方面的潜力。

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