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

Sulin Zhang; Wing Kim Liu; Rodney S. Ruoff

doi:10.1021/nl0350276

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

Sulin Zhang, Wing Kim Liu, Rodney S. Ruoff^*

^*Corresponding author for this work

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

134 Scopus citations

Abstract

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 language	English (US)
Pages (from-to)	293-297
Number of pages	5
Journal	Nano letters
Volume	4
Issue number	2
DOIs	https://doi.org/10.1021/nl0350276
State	Published - Feb 2004

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Mechanical Engineering
Bioengineering
General Materials Science

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10.1021/nl0350276

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abstract = "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.",

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AB - 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.

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

Abstract

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