Multibond dynamics of nanoscale friction: The role of temperature

Itay Barel, Michael Urbakh, Lars Jansen, André Schirmeisen

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Article number066104
JournalPhysical Review Letters
Volume104
Issue number6
DOIs
StatePublished - 12 Feb 2010

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