Unique buckling responses of multi-walled carbon nanotubes incorporated as torsion springs

Byeong Woo Jeong, Susan B. Sinnott

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Buckling responses of multi-walled carbon nanotubes incorporated as torsion springs in electromechanical devices are predicted via classical molecular dynamics simulations. The observations reveal that the outermost walls of the nanotubes act as torsion springs and possess not only greatly enhanced first buckling strengths, but also stiffened post-buckling regimes characterized by a slight growth of helicoidal ridges and furrows. As a result, a second buckling point appears at a larger torque than the first one, with a positive torsional stiffness of about 55% relative to the value in the pre-buckling regime. Interestingly, these unique buckling responses are mainly caused by the presence of the third outermost wall acting as a hard core.

Original languageEnglish (US)
Pages (from-to)1697-1701
Number of pages5
JournalCarbon
Volume48
Issue number6
DOIs
StatePublished - May 1 2010

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Carbon Nanotubes
Torsional stress
Buckling
Carbon nanotubes
Electromechanical devices
Nanotubes
Molecular dynamics
Torque
Stiffness
Computer simulation

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

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abstract = "Buckling responses of multi-walled carbon nanotubes incorporated as torsion springs in electromechanical devices are predicted via classical molecular dynamics simulations. The observations reveal that the outermost walls of the nanotubes act as torsion springs and possess not only greatly enhanced first buckling strengths, but also stiffened post-buckling regimes characterized by a slight growth of helicoidal ridges and furrows. As a result, a second buckling point appears at a larger torque than the first one, with a positive torsional stiffness of about 55{\%} relative to the value in the pre-buckling regime. Interestingly, these unique buckling responses are mainly caused by the presence of the third outermost wall acting as a hard core.",
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Unique buckling responses of multi-walled carbon nanotubes incorporated as torsion springs. / Jeong, Byeong Woo; Sinnott, Susan B.

In: Carbon, Vol. 48, No. 6, 01.05.2010, p. 1697-1701.

Research output: Contribution to journalArticle

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