Role of surface roughness in superlubricity

Details Role of surface roughness in superlubricity Role of surface roughness in superlubricity

2006-04-13

arxiv.org/abs/cond-mat/0604347v1

J. Phys.: Condens. Matter 18 (2006) 4143-4160

Physics

Condensed Matter

Soft Condensed Matter

11 pages, 17 figures, format revtex

Scientific paper

10.1088/0953-8984/18/17/004

We study the sliding of elastic solids in adhesive contact with flat and rough interfaces. We consider the dependence of the sliding friction on the elastic modulus of the solids. For elastically hard solids with planar surfaces with incommensurate surface structures we observe extremely low friction (superlubricity), which very abruptly increases as the elastic modulus decreases. We show that even a relatively small surface roughness may completely kill the superlubricity state.

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