Bilayer graphenes with antidots: structures, properties and applications

Abstract

We consider structures, properties and possible applications of next bilayer graphene (BLG) materials with nanoholes. Formation of folded nanoholes in bilayer graphene: modelling and comparison with experiments will discussed. The most advantageous shape of the BLG holes was determined in a manner analogous to the method used by Woolf to find the optimal shape of the crystals, unlike the method, the edge energy depends not only on the direction, but also on the cut along the direction. This suggests that the optimal shape of the holes depends on their size. The comparisons with the experiments of M.Takeguchi group (Japan) was carried out. The holes in single and few-layer graphene films can be the impacts of heavy high-energy ions. To carry out the comparison with the experiments, a collaboration with N. Nebogatikova group (Russia), was carried out. We have studied the atomic structures of nanoholes in both bilayer and multilayer graphene using two-temperature molecular dynamics simulations requires proper treating of dynamic energy exchange between electronic and ionic subsystems in the irradiated system. Different stable forms of nanoholes with closed edges are considered in BLG structures of AA, AB and Moiré stacking’s. We have found stable BLG nanomeshs with both semimetal, metal and semiconductor properties. Some applications of similar BLG structures are proposed.