Stiffness of Single-Walled Carbon Nanotubes under Large Strain

T. Ozaki, Y. Iwasa, and T. Mitani
Phys. Rev. Lett. 84, 1712 – Published 21 February 2000
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Abstract

Large-scale molecular dynamic simulations of the axial deformations in single-walled carbon nanotubes have been performed using an O(N) tight-binding method. Our simulations indicate that under large strain, 0 K stress is remarkably sensitive to helicity, and that a zigzag nanotube and an armchair nanotube are the stiffest, respectively, under elongation and compression regimes. Furthermore, the elastic properties of a graphite sheet have been investigated using a simple harmonic potential and an analytic bond-order potential. The results suggest that the unique elastic properties of carbon nanotubes originate from those of a six-membered ring.

  • Received 21 September 1999

DOI:https://doi.org/10.1103/PhysRevLett.84.1712

©2000 American Physical Society

Authors & Affiliations

T. Ozaki, Y. Iwasa, and T. Mitani

  • Japan Advanced Institute of Science and Technology, Tatsunokuchi Ishikawa 923-1292, Japan

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Issue

Vol. 84, Iss. 8 — 21 February 2000

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