Real-time transmission electron microscope observation of nanofriction at a single Ag asperity
Real-time transmission electron microscope observation of nanofriction at a single Ag asperity
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DOI：
10.1088/0957-4484/23/50/505701
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发表时间：
2012-12
期刊：
影响因子：
3.5
通讯作者：
Takaaki Sato;T. Ishida;L. Jalabert;H. Fujita
中科院分区：
文献类型：
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作者：
Takaaki Sato;T. Ishida;L. Jalabert;H. Fujita
在真实的时间内观察纳米尺度的变形是理解摩擦和润滑机制的重要一步。我们的实验装置的微机械结合透射电子显微镜，使我们能够测量的变形，力和横截面积的一个单一的银粗糙在剪切测试。实验结果提供了一个决定摩擦系数的参数。此外，我们证明了与剪切断裂事件相关的能量损失与纳米接触断裂后形成的两个表面的总表面能的增加密切相关。
The observation of nanoscale deformation in real time is a significant step toward understanding the mechanisms of friction and lubrication. Our experimental setup of a micromachine combined with a transmission electron microscope allowed us to measure the deformation, force and cross-sectional area of a single Ag asperity during shear testing. The experimental results provided insight into one of the parameters that determines the frictional coefficient. Furthermore, we demonstrated that the energy loss associated with a shear fracture event is strongly correlated with the increase in total surface energy of the two surfaces formed here after the fracture of the nanocontact.