Abstract
In this study, using numerical simulations based on an incommensurate lattice model at the nanoscale, we investigate the lattice structures of pinned surfaces and the lubrication dynamics of surfaces driven by a moving external plate or an external force. When the elasticity of the surface is changed, the maximum static frictional force shows anomalously complicated behavior under certain conditions. The kinetic frictional force shows peculiar resonant-type sliding velocity dependence, which is caused by phonon excitations, and leads to novel behaviors of lubrication.
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