Multibond Dynamics of Nanoscale Friction: The Role of Temperature

被引：127

作者：

Barel, Itay ^{[1
]}

Urbakh, Michael ^{[1
]}

Jansen, Lars ^{[2
,3
]}

Schirmeisen, Andre ^{[2
,3
]}

机构：

[1] Tel Aviv Univ, Sch Chem, IL-69978 Tel Aviv, Israel

[2] Univ Munster, Inst Phys, Munster, Germany

[3] Univ Munster, CeNTech, Munster, Germany

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 06期

基金：

以色列科学基金会;

关键词：

FORCE SPECTROSCOPY; LAWS;

D O I：

10.1103/PhysRevLett.104.066104

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The main challenge in predicting sliding friction is related to the complexity of highly nonequilibrium processes, the kinetics of which are controlled by the interface temperature. Our experiments reveal a nonmonotonic enhancement of dry nanoscale friction at cryogenic temperatures for different material classes. Concerted simulations show that it emerges from two competing processes acting at the interface: the thermally activated formation as well as rupturing of an ensemble of atomic contacts. These results provide a new conceptual framework to describe the dynamics of dry friction.

引用

页数：4

共 21 条

[1] Protein Friction Limits Diffusive and Directed Movements of Kinesin Motors on Microtubules [J].