Multibond Dynamics of Nanoscale Friction: The Role of Temperature

Itay Barel, Michael Urbakh, Lars Jansen, and André Schirmeisen
Phys. Rev. Lett. 104, 066104 – Published 12 February 2010
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Abstract

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.

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  • Received 15 October 2009

DOI:https://doi.org/10.1103/PhysRevLett.104.066104

©2010 American Physical Society

Authors & Affiliations

Itay Barel and Michael Urbakh

  • School of Chemistry, Tel Aviv University, 69978 Tel Aviv, Israel

Lars Jansen and André Schirmeisen*

  • Institute of Physics and Center for Nanotechnology (CeNTech), University of Münster, Münster, Germany

  • *schirmeisen@uni-muenster.de

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Issue

Vol. 104, Iss. 6 — 12 February 2010

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