Structural lubricity: Role of dimension and symmetry
Abstract
When two chemically passivated solids are brought into contact, interfacial interactions between the solids compete with intrabulk elastic forces. The relative strength of these interactions, which are length scale dependent, will be estimated using scaling arguments. Whenever 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 threedimensional solids and linear bearings realized from multiwall carbon nanotubes.
 Publication:

EPL (Europhysics Letters)
 Pub Date:
 April 2004
 DOI:
 10.1209/epl/i2003101396
 arXiv:
 arXiv:condmat/0311182
 Bibcode:
 2004EL.....66...97M
 Keywords:

 Condensed Matter  Materials Science
 EPrint:
 7 pages, 1 figure