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Thermal effects on atomic friction

Yi Sang·Martin Dube·Martin Grant
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Abstract

We model friction acting on the tip of an atomic force microscope as it is dragged across a surface at non-zero temperatures. We find that stick-slip motion occurs and that the average frictional force follows $|\ln v|^{2/3}$, where $v$ is the tip velocity. This compares well to recent experimental work (Gnecco et al, PRL 84, 1172), permitting the quantitative extraction of all microscopic parameters. We calculate the scaled form of the average frictional force's dependence on both temperature and tip speed as well as the form of the friction-force distribution function.

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Yi Sang, Martin Dube, Martin Grant. 2001-09-10. Thermal effects on atomic friction. https://doi.org/10.1103/physrevlett.87.174301

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