Effect of temperature and Stone-Thrower-Wales defects on strength of carbon nanotubes

K.A. Bukreeva1, A.M. Iskandarov1,2, S.V. Dmitriev1, Y. Umeno2
1Institute for Metals Superplasticity Problems RAS, Khalturin St. 39, 450001 Ufa
2Institute of Industrial Science, the University of Tokyo, 4-6-1 Komaba, Meguro-ku, 153-8505 Tokyo

Abstract

Critical tensile strain attainable in carbon nanotubes (CNT) is estimated by means of molecular dynamics simulations at various temperatures and for two types of CNT – «zigzag» and «armchair». Effect of Stone-Thrower-Wales (STW) de-fects on critical tensile strain is also examined. It is estab-lished that at zero temperature critical strain of defect-free «armchair» CNT is 66% higher than that of «zigzag» CNT, while at 2400 K this difference decreases down to 16%. Sig-nificant influence of STW defects on critical strain is re-ported only for temperatures close to 0 K.

Accepted: 27 November 2013

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