Atomic stick-slip friction between commensurate self-assembled monolayers

被引：16

作者：

Zhang, T ^{[1
]}

Wang, H ^{[1
]}

Hu, YZ ^{[1
]}

机构：

[1] Tsinghua Univ, State Key Lab Tribol, Beijing 100084, Peoples R China

来源：

TRIBOLOGY LETTERS | 2003年 / 14卷 / 02期

基金：

中国国家自然科学基金;

关键词：

molecular dynamics simulation; self-assembled monolayers; friction; stick-slip; chain dynamics;

D O I：

10.1023/A:1021743901788

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Molecular dynamics (MD) simulations have been used to examine the friction between commensurate self-assembled monolayers (SAMs) on Au (111). The discrepancy between sawtoothed friction force and the discontinuous molecular movements reveals the complex dynamics of the closed-packing chains under shearing. Molecules in the lower monolayer can be divided into two groups with a phase difference of. The periodic motion of the molecules is not synchronous with the frictional stick-slip loops, which result in a second-order valley in friction curves.

引用

页码：69 / 76

页数：8

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