TY - JOUR
T1 - Multibond dynamics of nanoscale friction
T2 - The role of temperature
AU - Barel, Itay
AU - Urbakh, Michael
AU - Jansen, Lars
AU - Schirmeisen, André
PY - 2010/2/12
Y1 - 2010/2/12
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=77649092371&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.104.066104
DO - 10.1103/PhysRevLett.104.066104
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AN - SCOPUS:77649092371
VL - 104
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 6
M1 - 066104
ER -