首页> 外文会议>ASME international design engineering technical conferences and computers and information in engineering conference 2010 >ENHANCED TOPOGRAPHICAL CHARACTERIZATION OF SHARP STEP EDGES WITH SIMULTANEOUS AFM IMAGING AND FORCE SPECTROSCOPY
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ENHANCED TOPOGRAPHICAL CHARACTERIZATION OF SHARP STEP EDGES WITH SIMULTANEOUS AFM IMAGING AND FORCE SPECTROSCOPY

机译:同时进行AFM成像和力谱分析的锋利阶梯形边缘的增强形貌表征

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摘要

Topographical imaging with atomic force microscopy (AFM) has become an established method since its invention in 1986. However, there exist a variety of imaging artifacts that can distort the acquired images, especially when using sharp probes such as carbon nanotubes or nanowires. This paper briefly discusses common imaging artifacts occurring at sharp step edges and explores theoretically their mitigation with spectral and multi-frequency methods that can perform simultaneous topographical imaging and force spectroscopy. The work focuses on the spectral inversion method, which has been experimentally validated by others [Stark et al., Proc. Natl. Acad. Sci. USA 99, 8473-8478 (2002); Sahin et al., Nature Nanotech. 2, 507-514 (2007)], and on a recently proposed dual-frequency-modulation method, which has been demonstrated within computational simulations and is under experimental implementation in our laboratory [Solares & Chawla, Meas. Sci. & Technol. 19, No. 055502; Chawla & Solares, Meas. Sci. &Technol. 20, No. 015501].
机译:自1986年发明以来,采用原子力显微镜(AFM)进行地形成像已成为一种既定方法。但是,存在多种成像伪影,这些伪影会扭曲所采集的图像,尤其是在使用诸如碳纳米管或纳米线之类的尖锐探针时。本文简要讨论了出现在尖锐台阶边缘的常见成像伪影,并从理论上探讨了可以同时进行地形成像和力谱分析的频谱和多频方法的缓解方法。这项工作着重于频谱反演方法,该方法已被其他人[Stark等人,Proc.Natl.Acad.Sci.USA,89:3587-3877]实验验证。 Natl。学院科学美国99,8473-8478(2002); Sahin等人,Nature Nanotech。 2,507-514(2007)],以及最近提出的双频调制方法,该方法已在计算仿真中得到了证明,并且正在我们实验室的实验实施中[Solares&Chawla,Meas。科学和技术。 19,编号055502; Chawla&Solares,Meas。科学和技术。 20,编号015501]。

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