Thermal Rectification In Asymmetric Graphene Ribbons
Materials Science
2009-06-08 v1 Mesoscale and Nanoscale Physics
Abstract
In this paper, heat flux in graphene nano ribbons has been studied by using molecular dynamics simulations. It is found that the heat flux runs preferentially along the direction of decreasing width, which demonstrates significant thermal rectification effect in the asymmetric graphene ribbons. The dependence of rectification ratio on the vertex angle and the length are also discussed. Compared to the carbon nanotube based one-dimensional thermal rectifier, graphene nano ribbons have much higher rectification ratio even in large scale. Our results demonstrate that asymmetric graphene ribbon might be a promising structure for practical thermal (phononics) device.
Cite
@article{arxiv.0906.1046,
title = {Thermal Rectification In Asymmetric Graphene Ribbons},
author = {Nuo Yang and Gang Zhang and Baowen Li},
journal= {arXiv preprint arXiv:0906.1046},
year = {2009}
}