Frictional anisotropy of oriented carbon nanotube surfaces

P. L. Dickrell, S. B. Sinnott, D. W. Hahn, N. R. Raravikar, L. S. Schadler, P. M. Ajayan, W. G. Sawyer

Research output: Contribution to journalArticlepeer-review

134 Scopus citations


This report examines highly anisotropic tribological behavior of multi-walled nanotube films oriented in mutually orthogonal directions. The average values of coefficient of friction varied from extremely high values (μ = 0.795) for vertically aligned nanotubes grown on rigid substrates to very low values (μ = 0.090) for nanotubes dispersed flat on the same substrates. The results were insensitive to humidity, in contrast to graphite materials, and indicate that nanotubes could be utilized as both low and high frictional surfaces.

Original languageEnglish (US)
Pages (from-to)59-62
Number of pages4
JournalTribology Letters
Issue number1
StatePublished - Jan 2005

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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