Multifrequency, repulsive-mode amplitude-modulated atomic force microscopy

Multifrequency, repulsive-mode amplitude-modulated atomic force microscopy
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DOI:
10.1063/1.2345593
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发表时间:
2006-09-11
影响因子:
4
通讯作者:
Proksch, Roger
Proksch, Roger
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Proksch, Roger

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描述了一种成像方法,其中悬臂梁被驱动在其弯曲共振本征模的两个或附近。对于大多数悬臂梁来说,这些本征模都是非简谐的。悬臂梁和成像参数的选择使得针尖-样品的相互作用是排斥的。在空气中成像的石墨样品和在水中成像的脱氧核糖核酸样品的驱动第二本征模的幅值和相位与在空气中成像的相同的本征模信号和在水中成像的脱氧核糖核酸样品的相同本征模信号显示出明显的不同。(C)2006年美国物理研究所。
An imaging method where a cantilever is driven at or near two of its flexural resonant eigenmodes is described. For most cantilevers, these eigenmodes are nonharmonic. The cantilever and imaging parameters are chosen such that the tip-sample interactions are repulsive. The driven second eigenmode amplitude and phase show strikingly different contrasts from those same fundamental eigenmode signals on graphite samples imaged in air and lambda-digest deoxyribonucleic acid samples imaged in water. (c) 2006 American Institute of Physics.