Young's moduli and Poisson's ratios of curvilinear anisotropic hexagonal and rhombohedral nanotubes. Nanotubes-auxetics

摘要

The study of materials with unusual mechanical properties has attracts a lot of attention in view of new possibilities for their application. One of these properties is negative Poisson's ratio which is commonly found in crystalline materials (materials with linear anisotropy). However, until now the capabilities of negative Poisson's ratios in tubular crystals (materials with curvilinear anisotropy), e.g., in today's popular nanotubes, have not been studied.