Atomistic Simulations of Double-Walled Carbon Nanotubes (DWCNTs) as Rotational Bearings

Sulin Zhang, Wing Kim Liu, Rodney S. Ruoff

Research output: Contribution to journalArticlepeer-review

128 Citations (SciVal)


Atomistic simulations of double-walled carbon nanotubes (DWCNTs) as rotational bearings were performed. Molecular mechanics (MM) calculations show that the interlayer energy surface of the bearings is nearly flat. Thermal effects on the bearings were studied with molecular dynamics (MD) simulations at finite temperature. These simulations show that the interlayer corrugation against rotation, and hence the interlayer friction coefficient, is extremely small, suggesting the possible application of DWCNTs as wearless bearings. Extreme operational conditions of the bearings for which the bearings disintegrate are also reported.

Original languageEnglish (US)
Pages (from-to)293-297
Number of pages5
JournalNano letters
Issue number2
StatePublished - Feb 1 2004

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering


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