Velocity dependence of friction and hydrogen bonding effects

被引：116

作者：

Chen, Jinyu ^{[1
]}

Ratera, Imma ^{[1
]}

Park, Jeong Young ^{[1
]}

Salmeron, Miquel ^{[1
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.96.236102

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that the friction force varies with the sliding velocity in a manner that depends on the chemical nature of the interface. Surfaces terminated with the hydrogen acceptor and donor moieties capable of forming H-bond networks exhibit a friction that decreases with sliding velocity, a behavior that is opposite to that of surfaces where no such networks can form. We explain the results with a model where the domains of glassy H-bond networks are disrupted at a critical applied stress leading to slippage.

引用

页数：4

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