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Use of dielectrophoresis in the fabrication of an atomic force microscope tip with a carbon nanotube: experimental investigation

机译:介电电泳在制造带有碳纳米管的原子力显微镜尖端中的应用:实验研究

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We have developed a method for fabricating a carbon nanotube (CNT) tip for an atomic force microscope (AFM). To attach a CNT to the tip apex, we used dielectrophoresis (DEP) with a non-uniform electric field. After inserting a drop of CNT solution and applying an AC electric field between a metal-coated AFM tip and an electrode plate, CNTs were deposited directly on the tip so that they protruded from the tip. We fabricated tips with individual multi-walled carbon nanotubes and found the experimental conditions that gave high fabrication yields. From AFM measurements of the nanoscale anodized aluminium oxide (AAO) structure, we have shown that a CNT tip assembled using DEP can produce high-resolution images and have a good wear resistance.
机译:我们已经开发了一种用于原子力显微镜(AFM)的碳纳米管(CNT)尖端的制造方法。为了将CNT连接到尖端,我们使用了具有非均匀电场的介电电泳(DEP)。在插入一滴CNT溶液并在金属涂层的AFM电极头和电极板之间施加交流电场后,CNT直接沉积在电极头上,从而从电极头突出。我们用单个多壁碳纳米管制作了笔尖,并发现了可提高制作良率的实验条件。通过对纳米级阳极氧化铝(AAO)结构的AFM测量,我们显示了使用DEP组装的CNT尖端可以产生高分辨率图像,并具有良好的耐磨性。

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