Young's modulus of nanoporous γ-graphyne membrane using an atomistic finite element model

In this study, the Young's moduli of armchair and zigzag nanoporous graphyne membranes with various porosities, pore numbers, and pore arrangements were examined under tensile loading by using the atomic-scale finite element method. The results of this study were in agreement with that of a previous study regarding the Young's moduli of pristine graphyne membranes. According to our analysis, the Young's moduli of the armchair and zigzag graphyne membranes significantly decreased with an increase in porosity. Moreover, the porosity effect on the Young's modulus of a membrane with sixteen pores was greater than that of those with one pore. The pore arrangement effect on graphyne with high porosity was evident. This paper facilitates the understanding of the mechanical strength of nanoporous graphyne membranes and the fabrication and application of high performance nanoporous graphyne membranes.