首页> 外文期刊>Journal of Experimental Nanoscience >Convex–concave nanostructure transition on highly oriented pyrolitic graphite surface induced by atomic force microscope tip under bias voltage
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Convex–concave nanostructure transition on highly oriented pyrolitic graphite surface induced by atomic force microscope tip under bias voltage

机译:偏压作用下原子力显微镜尖端在高度取向的热解石墨表面上形成凹凸的纳米结构转变

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摘要

Convex and concave nanoscale dots were formed on a highly oriented pyrolitic graphite surface in air by an atomic force microscope tip under positively applied bias voltage. It was found that the increasing amplitude or duration of the bias voltage over threshold values can change the convex profiles into concave ones. The threshold voltage duration for the profile transition increases sharply with decreasing amplitude of the voltage and a nonlinear relationship between them was obtained. For enough long duration, there exists a threshold voltage amplitude, about 4.1–5?V in this study, for the profile transition as well.
机译:在正向施加偏压的条件下,通过原子力显微镜尖端在空气中高度定向的热解石墨表面上形成凹凸点。已经发现,偏置电压的幅度或持续时间超过阈值会导致凸形轮廓变为凹形轮廓。随着电压幅度的减小,轮廓过渡的阈值电压持续时间急剧增加,并且获得了它们之间的非线性关系。对于足够长的持续时间,在此研究中也存在一个用于轮廓过渡的阈值电压幅度,约为4.1–5?V。

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