Research / 2021 / Article / Tab 1

Research Article

Tunable Negative Poisson’s Ratio in Van der Waals Superlattice

Table 1

Poisson’s ratio, Young’s, and shear modulus of graphene, -BN and G/-BN.

MethodIn-planeOut-of-plane

G/-BNStacking mode ADFT0.199886.8369.7-0.109-0.00544.9-1.3
Stacking mode BDFT0.198896.4374.2-0.111-0.00645.6-2.8
Stacking mode CDFT0.199932.8389.1-0.023-0.00149.08.7

MonolayerGrapheneExpt. [39]0.165
DFT0.159340146.7
-BNExpt. [40]0.19273114.7
DFT0.19923899.3

For monolayer materials, the unit of Young’s and shear modulus is Nm-1. For G/-BN superlattices, the unit of Young’s and shear modulus is GPa.