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Nanotribological behavior of a single silver nanowire on graphite

机译：石墨上单一银纳米线的纳米级行为

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The nanotribological characteristics of silver nanowires (Ag NWs) are of great importance for the reliability of their applications in flexible nanodevices involving mechanical interactions. The frictional behaviors of Ag NWs on graphite substrate were directly investigated by atomic force microscopy (AFM) nanomanipulation. The relatively short NWs demonstrate three forms of motion-rotation, translation and a combination of the two-whose frictional behaviors behave like rigid rods. The relatively long Ag NW shows characteristics of a flexible beam, whose friction increases with an increase in the bending angle of the NW. The friction between the NW and substrate increases linearly with an increase in the length of the NW. The long Ag NW displays extraordinary flexibility that can be folded to different shapes, and the friction of the folded NW becomes smaller due to the decreased bending deformation. The critical aspect ratio of the Ag NW on graphite substrate for two different frictional behaviors between the relatively long and short NWs is found to be 12-15. These findings can deepen the understanding of the frictional characteristics of Ag NWs and contribute to their quantitative interface design.
机译：银纳米线（Ag NWS）的纳米纤维学特征对于其在涉及机械相互作用的柔性纳米型中的应用的可靠性非常重要。通过原子力显微镜（AFM）纳米尺寸直接研究石墨衬底上Ag NWS的摩擦行为。相对短的NW展示了三种形式的运动旋转，翻译和两者的组合，其摩擦行为表现得像刚性杆。相对长的Ag NW表示柔性梁的特性，其摩擦随着NW的弯曲角度的增加而增加。 NW和衬底之间的摩擦力线性增加，随着NW的长度的增加而增加。长AG NW显示出可折叠到不同形状的非凡的柔韧性，并且由于弯曲变形减小，折叠NW的摩擦变小。发现相对长的NWS之间的两个不同摩擦行为的Ag NW的临界纵横比被发现为12-15。这些发现可以加深对AG NWS的摩擦特性的理解，并有助于它们的定量界面设计。

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