Tunable Thermal Conduction in Graphane Nanoribbons
arXiv:1402.1212 · doi:10.1063/1.4870973
Abstract
Graphane and graphene are both two-dimensional materials but of different bonding configurations, which can result in distinct thermal conduction properties. We simulate thermal conduction in graphane nanoribbons (GANRs) using the nonequilibrium Green's function method. It is found that GANRs have lower ballistic thermal conductance and stronger thermal conductance anisotropy than the graphene counterparts. Furthermore, hydrogen vacancies of GANRs considerably suppress thermal conduction, accompanied by enhanced thermal conductance anisotropy. The tunable thermal conduction, realized by controlling the width, edge shape and hydrogen vacancy concentration of GANRs, could be useful for thermal management and thermoelectric applications.
References in corpus (10)
- Control of graphene's properties by reversible hydrogenation
- Graphane: a two-dimensional hydrocarbon
- Quantum thermal transport in nanostructures
- Nonequilibrium Green's Function Approach to Phonon Transport in Defective Carbon Nanotubes
- Ballistic to diffusive crossover of heat flow in graphene ribbons
- Thermal and Thermoelectric Properties of Graphene
- First-principles study of heat transport properties of graphene nanoribbons
- Scaling theory put into practice: first-principles modeling of transport in doped silicon nanowires
- Nonequilibrium Green's function method for phonon-phonon interaction and ballistic-diffusive thermal transport
- Tuning thermal transport in nanotubes with topological defects