Abstract
We present a numerical study of the friction force between two contact surfaces as a function of the temperature and shape parameter. We modify the sinusoidal potential to capture surface features. This result is applied to derive an analytical expression for the shape corrugation dependence of static friction force. We calculate the friction force between two contact surfaces as a function of the temperature and shape corrugation. The ensemble of our data is consistently explained by the thermally activated process of the tip on an effective non-sinusoidal potential. Finally, we numerically find two critical temperatures which mark the transition between thermal activation regime and thermal drift regime. The critical temperature dependence of the shape of the potential is determined.
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Kenmoe, G.D., Tchaptchet, E.D. & Kofané, T.C. Thermal Effect on Atomic Friction with Deformable Substrate. Tribol Lett 55, 533–542 (2014). https://doi.org/10.1007/s11249-014-0378-0
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DOI: https://doi.org/10.1007/s11249-014-0378-0