Double-wall silicon carbide nanotubes with covalent bond between walls

Abstract

Computer design of new type of double-wall silicon carbide nanotubes with covalent bond between walsl is suggested. Structure and temperature stability of these objects are investigated with molecular dynamic simulations. Nanotubes with small diameters spontaneously are destroyed. Nanotubes with large diameters are stable up to 1000-1400 K. Found out the phenomenon of negative heat capacity of the considered nanotubes related with structural reconstruction which takes place at the temperature increasing.