AUTHOR=Li Xiuqiang , Zhang Gang 

TITLE=Enhancing the extremely high thermal conduction of graphene nanoribbons

JOURNAL=Frontiers in Physics

VOLUME=1

YEAR=2013

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2013.00019

DOI=10.3389/fphy.2013.00019

ISSN=2296-424X

ABSTRACT=<p>Graphene and Graphene nanoribbons (GNRs) are found to have superior high thermal conductivity favorable for high-performance heat dissipation. In this letter, by using molecular dynamics simulations, we show that constructing specific structure can further enhance high thermal conduction of GNRs. By introducing a small gap at the center, the average heat flux (thermal conductivity) can be enhanced by up to 23% the corresponding increase in total heat current is 16%. This unusual thermal conduction enhancement is achieved by an intriguing physical mechanism of suppress phonon-phonon scattering. Our findings uncover new mechanism to increase thermal conduction of GNRs.</p>