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Brittle and Ductile Behavior in Carbon Nanotubes

Marco Buongiorno Nardelli, B. I. Yakobson, and J. Bernholc
Phys. Rev. Lett. 81, 4656 – Published 23 November 1998
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Abstract

Large-scale molecular dynamics simulations were used to study the response of carbon nanotubes to a tensile load. Plastic or brittle behaviors can occur depending upon the external conditions and tube symmetry. All tubes are brittle at high strain and low temperature, while at low strain and high temperature armchair (n,n) nanotubes can be completely or partially ductile. In zigzag (n,0) tubes ductile behavior is expected for tubes with n<14, while larger tubes are completely brittle. In both cases the curvature determines the mechanical response.

  • Received 27 August 1998

DOI:https://doi.org/10.1103/PhysRevLett.81.4656

©1998 American Physical Society

Authors & Affiliations

Marco Buongiorno Nardelli, B. I. Yakobson, and J. Bernholc

  • Department of Physics, North Carolina State University, Raleigh, North Carolina 27695-8202

See Also

Stretching Nanotubes

Phys. Rev. Focus 2, 27 (1998)

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Issue

Vol. 81, Iss. 21 — 23 November 1998

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