Rolling and sliding of a nanorod between two planes: Tribological regimes and control of friction

Details Rolling and sliding of a nanorod between two planes: Tribological regimes and control of friction Rolling and sliding of a nanorod between two planes: Tribological regimes and control of friction

2012-03-13

arxiv.org/abs/1203.2757v1

Phys. Rev. B 85, 035447 (2012)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 figures

Scientific paper

10.1103/PhysRevB.85.035447

The motion of a cylindrical crystalline nanoparticle sandwiched between two crystalline planes, one stationary and the other pulled at a constant velocity and pressed down by a normal load, is considered theoretically using a planar model. The results of our model calculations show that, depending on load and velocity, the nanoparticle can be either rolling or sliding. At sufficiently high normal loads, several sliding states characterized by different friction forces can coexist, corresponding to different orientations of the nanoparticle, and allowing one to have low or high friction at the same pulling velocity and normal load.

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