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arXiv 1602.02557cond-mat.mes-hall
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介观石墨接触中与法向力无关的超润滑性观察

Observation of normal-force-independent superlubricity in mesoscopic graphite contacts

Cuong Cao Vu, Shoumo Zhang, Michael Urbakh, Qunyang Li, Q. -C. He, Quanshui Zheng

摘要:

本文研究了在环境条件下原子级光滑的单晶石墨表面之间的微尺度无公度接触中摩擦力对法向载荷的依赖关系。我们的实验结果表明,这些接触表现出超润滑性(超低摩擦),这是强大的对正常负载的应用。测得的摩擦系数基本上为零,并独立的外部正常负载高达1.67 MPa的压力。在微尺度接触中观察到的与载荷无关的超润滑性对于许多实际应用是一个有希望的结果。

英文摘要:

We investigate the dependence of friction forces on normal load in incommensurate micrometer size contacts between atomically smooth single-crystal graphite surfaces under ambient conditions. Our experimental results show that these contacts exhibit superlubricity (super-low friction), which is robust against the application of normal load. The measured friction coefficients are essentially zero and independent of the external normal load up to a pressure of 1.67 MPa. The observation of load-independent superlubricity in micro-scale contacts is a promising result for numerous practical applications.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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