Strain-rate and temperature dependent plastic yield in carbon nanotubes from ab initio calculations

Dumitrică, Traian; Yakobson, Boris I.
April 2004
Applied Physics Letters;4/12/2004, Vol. 84 Issue 15, p2775
Academic Journal
Lattice yield to tension within practical time and temperatures is determined by the probability of defect formation. Its rate in nanotubes depends in turn on the transition state and activation barrier for the Stone–Wales bond rotations. Systematic ab initio computations of the barriers for the tubes of various symmetries and radii led to accurate calculation of plastic yield strain as a function of temperature and test duration. © 2004 American Institute of Physics.


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