▎ 摘　　要

We investigated the mechanical responses of a graphene nanodisk that is applicable to an ultra-sensitive pressure sensor via classical molecular dynamics (MD) simulation. The deflection of the graphene nanodisk nonlinearly increased with increasing applied force per atom, and then the curve could be divided into three regions. Both the critical and the fracture strains of the graphene nanodisk were obtained from the MD simulation, and its bending rigidity was also calculated as a function of the deflection. The obtained values were in good agreement with the previous theoretical and experimental works for the graphenes. The present investigation provides useful information for the advance of the pressure sensor based on the graphene nanodisk, and opens the potential for the graphene nanodisk to be applicable to versatile devices in nanoelectromechanical systems.