Structural lubricity: Role of dimension and symmetry

Details Structural lubricity: Role of dimension and symmetry Structural lubricity: Role of dimension and symmetry

2003-11-07

arxiv.org/abs/cond-mat/0311182v1

Physics

Condensed Matter

Materials Science

7 pages, 1 figure

Scientific paper

10.1209/epl/i2003-10139-6

When two chemically passivated solids are brought into contact, interfacial interactions between the solids compete with intrabulk elastic forces. The relative importance of these interactions, which are length-scale dependent, will be estimated using scaling arguments. If elastic interactions dominate on all length scales, solids will move as essentially rigid objects. This would imply superlow kinetic friction in UHV, provided wear was absent. The results of the scaling study depend on the symmetry of the surfaces and the dimensionalities of interface and solids. Some examples are discussed explicitly such as contacts between disordered three-dimensional solids and linear bearings realized from multiwall carbon nanotubes.

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