Remarkably enhanced thermal transport based on a flexible horizontally-aligned carbon nanotube array film

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	Remarkably enhanced thermal transport based on a flexible horizontally-aligned carbon nanotube array film
	Qiu, Lin 1,2; Wang, Xiaotian 3; Su, Guoping 1,4; Tang, Dawei 1; Zheng, Xinghua 1,5; Zhu, Jie 1; Wang, Zhiguo 6; Norris, Pamela M.2; Bradford, Philip D.7; Zhu, Yuntian 7,8
刊名	SCIENTIFIC REPORTS
	2016-02-16
卷号	6 页码:21014
关键词	3-OMEGA METHOD CONDUCTIVITY GRAPHITE RESISTANCE DEFECTS CRYSTAL FIBERS FOAM
通讯作者	Tang, DW ; Zheng, XH
英文摘要	It has been more than a decade since the thermal conductivity of vertically aligned carbon nanotube (VACNT) arrays was reported possible to exceed that of the best thermal greases or phase change materials by an order of magnitude. Despite tremendous prospects as a thermal interface material (TIM), results were discouraging for practical applications. The primary reason is the large thermal contact resistance between the CNT tips and the heat sink. Here we report a simultaneous sevenfold increase in in-plane thermal conductivity and a fourfold reduction in the thermal contact resistance at the flexible CNT-SiO2 coated heat sink interface by coupling the CNTs with orderly physical overlapping along the horizontal direction through an engineering approach (shear pressing). The removal of empty space rapidly increases the density of transport channels, and the replacement of the fine CNT tips with their cylindrical surface insures intimate contact at CNT-SiO2 interface. Our results suggest horizontally aligned CNT arrays exhibit remarkably enhanced in-plane thermal conductivity and reduced out-of-plane thermal conductivity and thermal contact resistance. This novel structure makes CNT film promising for applications in chip-level heat dissipation. Besides TIM, it also provides for a solution to anisotropic heat spreader which is significant for eliminating hot spots.
学科主题	Carbon nanotubes and fullerenes,Phase transitions and critical phenomena
WOS标题词	Science & Technology
类目[WOS]	Multidisciplinary Sciences
研究领域[WOS]	Science & Technology - Other Topics
关键词[WOS]	3-OMEGA METHOD ; CONDUCTIVITY ; GRAPHITE ; RESISTANCE ; DEFECTS ; CRYSTAL ; FIBERS ; FOAM
收录类别	SCI
语种	英语
WOS记录号	WOS:000370296400001
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/112346]
专题	工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI）
作者单位	1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China 2.Univ Virginia, Dept Mech & Aerosp Engn, Charlottesville, VA 22904 USA 3.Nanyang Technol Univ, Sch Mat Sci & Engn, 50 Nanyang Ave, Singapore 639798, Singapore 4.Shenhua Guohua Beijing Elect Power Res Inst Co Lt, Beijing 100025, Peoples R China 5.Univ Calif Riverside, Dept Mech Engn, Riverside, CA 92521 USA 6.China Natl Elect Engn Co Ltd, Beijing 100048, Peoples R China 7.N Carolina State Univ, Dept Mat Sci & Engn, Box 7907, Raleigh, NC 27695 USA 8.Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nanjing 210094, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Qiu, Lin,Wang, Xiaotian,Su, Guoping,et al. Remarkably enhanced thermal transport based on a flexible horizontally-aligned carbon nanotube array film[J]. SCIENTIFIC REPORTS,2016,6:21014.
APA	Qiu, Lin.,Wang, Xiaotian.,Su, Guoping.,Tang, Dawei.,Zheng, Xinghua.,...&Zhu, Yuntian.(2016).Remarkably enhanced thermal transport based on a flexible horizontally-aligned carbon nanotube array film.SCIENTIFIC REPORTS,6,21014.
MLA	Qiu, Lin,et al."Remarkably enhanced thermal transport based on a flexible horizontally-aligned carbon nanotube array film".SCIENTIFIC REPORTS 6(2016):21014.