| 原子力显微镜形貌测量偏差的机理分析及修正方法 |
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| 引用本文： | 徐金明,白以龙.原子力显微镜形貌测量偏差的机理分析及修正方法[J].力学学报,2011,43(1):112-121. |
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| 作者姓名： | 徐金明 白以龙 |
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| 作者单位： | 中国科学院力学研究所非线性力学国家重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目(10932011)~~ |
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| 摘 要： | 采用原子力显微镜测量样品表面形貌时, 针尖与样品间的相互作用力会使样品表面不同力学性质的区域变形量不同, 从而使得形貌测量结果产生偏差. 首先研究了引起形貌测量偏差的机理, 进一步通过数值计算发现通过引入高频信号与低频信号叠加作为新的形貌测量信号可以近似避免这一类形貌测量偏差. 但是对于普通的矩形截面悬臂梁提取高阶信号是比较困难的, 通过外加弹簧的结构设计来调节悬臂梁各阶本征频率相对值, 使得在实验测量过程中可以较方便地提取悬臂梁振动的高频信号.
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| 关 键 词： | AFM 形貌测量偏差 高频信号 结构设计 各阶本征频率相对值 |
| 收稿时间： | 2010-04-29 |
| 修稿时间： | 2010-05-21 |
ANALYSIS OF TOPOGRAPHY MEASUREMENT ERROR IN ATOMIC FORCE MICROSCOPE(AFM) AND ITS REVISION METHOD |
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| Xu Jinming
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Bai Yilong.ANALYSIS OF TOPOGRAPHY MEASUREMENT ERROR IN ATOMIC FORCE MICROSCOPE(AFM) AND ITS REVISION METHOD[J].chinese journal of theoretical and applied mechanics,2011,43(1):112-121. |
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| Authors: | Xu Jinming Bai Yilong |
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| Institution: | Xu Jinming~(*, ) Bai Yilong~(*,2)) *(State Key Laboratory of Nonlinear Mechanics,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China) (Graduate School of Chinese Academy of Sciences,China) |
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| Abstract: | In measuring topography of sample,the interaction between tip and sample will cause the deformation on the sample surface and the deformations will be different in the regions with different mechanical property.Furthermore,the deformations will cause non-negligible error in topography measurement.Theory analyses are carried out on this measurement error and further numerical research shows that mixed signals with high-frequency components are able to eliminate the measurement error.However,it is difficult t... |
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| Keywords: | AFM topography measurement error high-frequency signal structural design relative values of eigen-frequencie |
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