Integrating experimental and simulation length and time scales in mechanistic studies of friction

W. G. Sawyer, S. S. Perry, S. R. Phillpot, S. B. Sinnott

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Friction is ubiquitous in all aspects of everyday life and has consequently been under study for centuries. Classical theories of friction have been developed and used to successfully solve numerous tribological problems. However, modern applications that involve advanced materials operating under extreme environments can lead to situations where classical theories of friction are insufficient to describe the physical responses of sliding interfaces. Here, we review integrated experimental and computational studies of atomic-scale friction and wear at solid-solid interfaces across length and time scales. The influence of structural orientation in the case of carbon nanotube bundles, and molecular orientation in the case of polymer films of polytetrafluoroethylene and polyethylene, on friction and wear are discussed. In addition, while friction in solids is generally considered to be athermal, under certain conditions thermally activated friction is observed for polymers, carbon nanotubes and graphite. The conditions under which these transitions occur, and their proposed origins, are discussed. Lastly, a discussion of future directions is presented.

Original languageEnglish (US)
Article number354012
JournalJournal of Physics Condensed Matter
Volume20
Issue number35
DOIs
StatePublished - Sep 3 2008

Fingerprint

friction
Friction
simulation
Carbon Nanotubes
Carbon nanotubes
solid-solid interfaces
carbon nanotubes
Wear of materials
Graphite
Molecular orientation
polytetrafluoroethylene
Polytetrafluoroethylene
polymers
Polyethylene
Polytetrafluoroethylenes
Polymer films
bundles
sliding
Polyethylenes
polyethylenes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

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Integrating experimental and simulation length and time scales in mechanistic studies of friction. / Sawyer, W. G.; Perry, S. S.; Phillpot, S. R.; Sinnott, S. B.

In: Journal of Physics Condensed Matter, Vol. 20, No. 35, 354012, 03.09.2008.

Research output: Contribution to journalArticle

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