AI Article Synopsis
- The study focuses on how dynamic chemical bonds at interfaces affect friction, improving our understanding of the mechanics behind rate and state laws.
- Experiments reveal that altering the normal load can reverse the velocity dependence of interfacial chemical-bond-induced (ICBI) friction.
- A theoretical model is developed that offers analytical solutions to interpret experimental results in terms of relevant timescales and length scales, paving the way for future research on ICBI friction dynamics.
Article 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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| http://dx.doi.org/10.1103/PhysRevLett.123.116102 | DOI Listing |
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