Thermal performance of vertically-aligned multi-walled carbon nanotube array grown on platinum film

CORC > 苏州纳米技术与纳米仿生研究所 > 中国科学院苏州纳米技术与纳米仿生研究所 > 先进材料研究部 > 李清文团队

	Thermal performance of vertically-aligned multi-walled carbon nanotube array grown on platinum film
	Li QW(李清文)
刊名	CARBON
	2014-10
卷号	77 期号:0 页码:266-274
关键词	INTERFACE MATERIALS RAMAN FLASH METHOD HEAT TRANSPORT-PROPERTIES CONDUCTIVITY DIFFUSIVITY EXCITATION BUNDLES
英文摘要	Vertically-aligned carbon nanotube array is expected to inherit high thermal conductivity and mechanical compliance of individual carbon nanotube and serve as thermal interface material. In this paper, vertically-aligned multi-walled carbon nanotube arrays have been directly grown on Pt film and the thermal performance has been studied by using laser flash technique. The determined thermal diffusivity decreases from 0.187 to 0.135 cm(2) s(-1) and the thermal conductivity increases from 1.8 to 3.1W m(-1) K-1 as temperature increases from 243.2 to 453.2 K. The fracture surface of the array peeled off the Pt film was characterized by scanning electron microscopy. It has been illustrated that the tearing surface is not smooth but fluffy with torn carbon nanotubes, indicating strong interfacial bonding and consequent small interface resistance between carbon nanotube array and Pt film. According to Raman spectra and transmission electron microscopy image, the possible mechanisms responsible for the thermal transport degradation are low packing density, twist, and the presence of impurities, amorphous carbon, defects and flaws. The influence of intertube van der Waals interactions has been studied by comparing the phonon dispersion relations and is expected to be not significant. (C) 2014 Elsevier Ltd. All rights reserved.
收录类别	SCI
语种	英语
公开日期	2014-12-01
内容类型	期刊论文
源URL	[http://ir.sinano.ac.cn/handle/332007/1625]
专题	苏州纳米技术与纳米仿生研究所_先进材料研究部_李清文团队
推荐引用方式 GB/T 7714	Li QW. Thermal performance of vertically-aligned multi-walled carbon nanotube array grown on platinum film[J]. CARBON,2014,77(0):266-274.
APA	Li QW.(2014).Thermal performance of vertically-aligned multi-walled carbon nanotube array grown on platinum film.CARBON,77(0),266-274.
MLA	Li QW."Thermal performance of vertically-aligned multi-walled carbon nanotube array grown on platinum film".CARBON 77.0(2014):266-274.