Thermal rectification in asymmetric graphyne nanoribbons: A nonequilibrium molecular dynamics study

The influences of size, tensile strain and the number of acetylenic linkages on the thermal transports of asymmetric graphyne nanoribbons are investigated using the nonequilibrium molecular dynamics simulations. The results show that the reduction of length or applying a tensile strain along the heat flux direction is benefit to elevate thermal rectification. However, the rectification factor is approximately independent on the number of acetylenic linkages, while the heat flux decreases monotonously.