The temperature-dependent transverse mechanical properties of single-walled nanotubes are studied using a molecular mechanics approach. The stretching and bond angle force constants describing the mechanical behaviour of the sp^{2} bonds are resolved in the temperature range between 0 K and 1600 K, allowing to identify a temperature dependence of the nanotubes wall thickness. We observe a decrease of the stiffness properties (axial and shear Young's modulus) with increasing temperatures, and an augmentation of the transverse Poisson's ratio, with magnitudes depending on the chirality of the nanotube. Our closed-form predictions compare well with existing Molecular Dynamics simulations.
@article{arxiv.1008.5098,
title = {Coupled thermo-mechanics of single-wall carbon nanotubes},
author = {Fabrizio Scarpa and Luca Boldrin and Hua-Xin Peng and Chrystel Remillat and Sondipon Adhikari},
journal= {arXiv preprint arXiv:1008.5098},
year = {2015}
}
Comments
15 pages, 4 figures. Accepted for Applied Physics Letters