2D supracrystals as a promising materials for planar nanoacoustoelectronics

The elastic and acoustic properties of 2D carbon supracrystals are simulated within the scope of modified density functional theory. The central and non-central force constants of carbon atoms and the corresponding elastic moduli, have been calculated in order to determine the velocities of elastic wave propagation in 2D supracrystalline nanoallotropes. It is shown that in sp2 nanoallotropes and graphene these velocities are approximately of the same value, and in sp3 nanoallotropes they are much less than in graphene.