Mechanical properties investigation of graphene coated with Ni

This work investigated mechanical behaviors of graphene and graphene coated with Ni (graphene-Ni) by using molecular dynamics (MD) method. By performing the MD simulation for uniaxial tension simulations, it could be noted that the graphene is more unstable than graphene-Ni at the same temperature from the result of molecular dynamics simulation for two models. It is observed that nickel atoms coated on the surface of graphene can increase the critical stress of graphene. As well, the young´s modulus of graphene is much lower than graphene-Ni. Two different models of graphene and grapheme-Ni were analyzed at 200K, 300K, 500K, 700K and 1000K respectively in order to understand the effect of temperature.