QQ客服 官方微博 反馈留言

	Thermal conductivity of multi-walled carbon nanotubes:Molecular dynamics simulations
	Hu GJ(胡帼杰) ; Cao BY(曹炳阳) ; Hu Guo-Jie ; Cao Bing-Yang
	2016-03-30 ; 2016-03-30
关键词	multi-walled carbon nanotubes thermal conductivity temperature control method molecular dynamics simulation TB383.1
其他题名	Thermal conductivity of multi-walled carbon nanotubes:Molecular dynamics simulations
中文摘要	Heat conduction in single-walled carbon nanotubes(SWCNTs) has been investigated by using various methods, while less work has been focused on multi-walled carbon nanotubes(MWCNTs). The thermal conductivities of the double-walled carbon nanotubes(DWCNTs) with two different temperature control methods are studied by using molecular dynamics(MD) simulations. One case is that the heat baths(HBs) are imposed only on the outer wall, while the other is that the HBs are imposed on both the two walls. The results show that the ratio of the thermal conductivity of DWCNTs in the first case to that in the second case is inversely proportional to the ratio of the cross-sectional area of the DWCNT to that of its outer wall. In order to interpret the results and explore the heat conduction mechanisms, the inter-wall thermal transport of DWCNTs is simulated. Analyses of the temperature profiles of a DWCNT and its two walls in the two cases and the interwall thermal resistance show that in the first case heat is almost transported only along the outer wall, while in the second case a DWCNT behaves like parallel heat transport channels in which heat is transported along each wall independently.This gives a good explanation of our results and presents the heat conduction mechanisms of MWCNTs.; Heat conduction in single-walled carbon nanotubes(SWCNTs) has been investigated by using various methods, while less work has been focused on multi-walled carbon nanotubes(MWCNTs). The thermal conductivities of the double-walled carbon nanotubes(DWCNTs) with two different temperature control methods are studied by using molecular dynamics(MD) simulations. One case is that the heat baths(HBs) are imposed only on the outer wall, while the other is that the HBs are imposed on both the two walls. The results show that the ratio of the thermal conductivity of DWCNTs in the first case to that in the second case is inversely proportional to the ratio of the cross-sectional area of the DWCNT to that of its outer wall. In order to interpret the results and explore the heat conduction mechanisms, the inter-wall thermal transport of DWCNTs is simulated. Analyses of the temperature profiles of a DWCNT and its two walls in the two cases and the interwall thermal resistance show that in the first case heat is almost transported only along the outer wall, while in the second case a DWCNT behaves like parallel heat transport channels in which heat is transported along each wall independently.This gives a good explanation of our results and presents the heat conduction mechanisms of MWCNTs.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/144929]
专题	清华大学
推荐引用方式 GB/T 7714	Hu GJ,Cao BY,Hu Guo-Jie,et al. Thermal conductivity of multi-walled carbon nanotubes:Molecular dynamics simulations[J],2016, 2016.
APA	胡帼杰,曹炳阳,Hu Guo-Jie,&Cao Bing-Yang.(2016).Thermal conductivity of multi-walled carbon nanotubes:Molecular dynamics simulations..
MLA	胡帼杰,et al."Thermal conductivity of multi-walled carbon nanotubes:Molecular dynamics simulations".(2016).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。