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Role of surface roughness in superlubricity.

Authors
  • Tartaglino, U
  • Samoilov, V N
  • Persson, B N J
Type
Published Article
Journal
Journal of physics. Condensed matter : an Institute of Physics journal
Publication Date
May 03, 2006
Volume
18
Issue
17
Pages
4143–4160
Identifiers
DOI: 10.1088/0953-8984/18/17/004
PMID: 21690770
Source
Medline
License
Unknown

Abstract

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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