,Thermal conductivity of carbon nanoring linked graphene sheets:A molecular dynamics investigation

• 作 者: Gang Shi Jianwei Zhang Yonglv He Su Ju Dazhi Jiang
• 机 构: Department of Materials Science and Engineering, National University of Defense Technology, Changsha
• 出 处: 中国物理B（英文版）
• 发表日期: 2017年10期
• 关键词: carbon nanorins-graphene hybrid structures thermal conductivity molecular dynami

Improving the thermal conduction across graphene sheets is of great importance for their applications in thermal management.In this paper,thermal transport across a hybrid structure formed by two graphene nanoribbons and carbon nanorings (CNRs) was investigated by molecular dynamics simulations.The effects of linker diameter,number,and height on thermal conductivity of the CNRs-graphene hybrid structures were studied respectively,and the CNRs were found effective in transmitting the phonon modes of GNRs.The hybrid structure with 2 linkers showed the highest thermal conductivity of 68.8 W.m-1·K-1.Our work presents important insight into fundamental principles goveing the thermal conduction across CNR junctions and provides useful guideline for designing CNR-graphene structure with superior thermal conductivity.