Load and velocity dependence of friction mediated by dynamics of interfacial contacts

Wengen Ouyang; Shivaprakash N. Ramakrishna; Antonella Rossi; Michael Urbakh; Nicholas D. Spencer; Andrea Arcifa

doi:10.1103/PhysRevLett.123.116102

Load and velocity dependence of friction mediated by dynamics of interfacial contacts

Wengen Ouyang, Shivaprakash N. Ramakrishna, Antonella Rossi, Michael Urbakh, Nicholas D. Spencer, Andrea Arcifa^*

^*Corresponding author for this work

School of Chemistry

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

Studying the frictional properties of interfaces with dynamic chemical bonds advances understanding of the mechanism underlying rate and state laws, and offers new pathways for the rational control of frictional response. In this work, we revisit the load dependence of interfacial chemical-bond-induced (ICBI) friction experimentally and find that the velocity dependence of friction can be reversed by changing the normal load. We propose a theoretical model, whose analytical solution allows us to interpret the experimental data on timescales and length scales that are relevant to experimental conditions. Our work provides a promising avenue for exploring the dynamics of ICBI friction.

Original language	English
Article number	116102
Journal	Physical Review Letters
Volume	123
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevLett.123.116102
State	Published - 9 Sep 2019

Funding

Funders	Funder number
European Cooperation in Science and Technology	MP1303
Deutsche Forschungsgemeinschaft	BA 1008/21-1
Israel Science Foundation	1141/18

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10.1103/PhysRevLett.123.116102

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title = "Load and velocity dependence of friction mediated by dynamics of interfacial contacts",

abstract = "Studying the frictional properties of interfaces with dynamic chemical bonds advances understanding of the mechanism underlying rate and state laws, and offers new pathways for the rational control of frictional response. In this work, we revisit the load dependence of interfacial chemical-bond-induced (ICBI) friction experimentally and find that the velocity dependence of friction can be reversed by changing the normal load. We propose a theoretical model, whose analytical solution allows us to interpret the experimental data on timescales and length scales that are relevant to experimental conditions. Our work provides a promising avenue for exploring the dynamics of ICBI friction.",

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AU - Ramakrishna, Shivaprakash N.

AU - Rossi, Antonella

AU - Urbakh, Michael

AU - Spencer, Nicholas D.

AU - Arcifa, Andrea

PY - 2019/9/9

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Load and velocity dependence of friction mediated by dynamics of interfacial contacts

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