Graphene, a 2-Dimensional (2-D) allotrope of carbon, has gained attention in the recent past owing to its unique and extraordinary properties. With the further reduction in the size and dimensionality of the electronic devices, heat dissipation and hot spot cooling pose a significant challenge. Additionally, the scale-down of the devices increases the number of thermal interfaces, thus, resulting in the introduction of additional thermal resistance in the system. As the conventional materials have limitations in their thermal properties, graphene with its superior thermal properties makes it a candidate material in the development of nanoscale electronic devices.

Recent studies have shown that the thermal transport in graphene is strongly influenced by strain. In this study we investigate the effects of uniaxial and biaxial tensile strain on the thermal conductivity of graphene using lattice dynamics calculations for phonon transport and Non-Equilibrium Molecular Dynamics (NEMD) simulations. It is observed that the impact of strain on the thermal conductivity of graphene can be reduced by controlling the direction of strain and by varying the tensile strain ratios. Phonon transport in both unstrained and strained graphene is also investigated. The discrepancies between the results of Boltzmann Transport Equation (BTE) studies and NEMD simulations are also discussed. Our findings can lead to better engineering of thermal transport in graphene for various nanoscale applications.