An elastic shell model for characterizing single-walled carbon nanotubes

作者：C Y Wang, L C Zhang · 发表于：Nanotechnology · 年份：2008 · DOI：10.1088/0957-4484/19/19/195704 · 被引用次数：70 · 研究领域：Carbon Nanotubes in Composites、Nanotechnology research and applications、Nonlocal and gradient elasticity in micro/nano structures

This paper proposes a two-dimensional elastic shell model to characterize the deformation of single-walled carbon nanotubes using the in-plane rigidity, Poisson ratio, bending rigidity and off-plane torsion rigidity as independent elastic constants. It was found that the off-plane torsion rigidity of a single-walled carbon nanotube is not zero due to the off-plane change in the π-orbital electron density on both sides of the nanotube. It was concluded that a three-dimensional elastic shell model of single-walled carbon nanotubes can be established with well-defined effective thickness.