A porous nanotube network structure of metallic carbon
Mengjiang Xing, Xiao‐Zhen Li
Abstract
A porous nanotube network structure of carbon allotrope was designed, denoted as P 4/ mmm C 96 . Besides its structure similar to carbon nanotubes, the most interesting thing about P 4/ mmm C 96 is that its band structure is metallic. The shear modulus G , Young’s modulus E , and bulk modulus B of P 4/ mmm C 96 is 49.4 GPa, 128.6 GPa, and 107.8 GPa, respectively. Although the elastic modulus of P 4/ mmm C 96 is low, it is still larger than other carbon allotropes, such as TY-II carbon, TY carbon, fcc-C10, Y carbon, Y-II carbon. The elastic anisotropy in shear modulus G , Poisson’s ratio v , and Young’s modulus E of P 4/ mmm C 96 are larger than that of other C 96 carbon allotropes, Finally, the elastic anisotropy of shear modulus of P 4/ mmm C 96 in (1 0 0) plane is the greatest, the elastic anisotropy of E of P 4/ mmm C 96 in (0 0 1) plane is the largest, while the elastic anisotropy in v in (0 0 1) plane is the greatest.