Enhancing the extremely high thermal conduction of graphene nanoribbons

Frontiers in Physics

Li, Xiuqiang¹  Zhang, Gang¹ 

[1] Peking University, China, Department of Electronics, Beijing, 100871, China

关键词: Thermal Conductivity;    Graphene;    Molecular Dynamics Simulation;    heat flux;    nanoribbon;   

DOI  :  10.3389/fphy.2013.00019

学科分类：物理（综合）

来源: Frontiers

【 摘 要 】

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.

【 授权许可】

CC BY