Atomic stick-slip friction between commensurate self-assembled monolayers

被引：0

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：

INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION | 2002年 / 3卷 / 3-4期

关键词：

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

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Molecular dynamics simulations have been used to examine the friction between commensurate self-assembled monolayers (SAMs) on Au(111). The kinetic friction is found to rise logarithmically with velocity. The analysis of friction force and discontinuous molecular movements reveals 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 pi The periodic motion of the molecules is not synchronous with the frictional stick-slip loops, which result in second-order valley in friction curves.

引用

页码：713 / 716

页数：4

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