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Title: Functionalization and densification of inter-bundle interfaces for improvement in electrical and thermal transport of carbon nanotube fibers
Author: Qiu, Lin1, 2; Wang, Xiaotian3; Tang, Dawei1; Zheng, Xinghua1, 4; Norris, Pamela M.2; Wen, Dongsheng5; Zhao, Jingna6; Zhang, Xiaohua6; Li, Qingwen6
Source: CARBON
Issued Date: 2016-08-01
Volume: 105, Pages:248-259
DOI: 10.1016/j.carbon.2016.04.043
DOC Type: Article
English Abstract: Electrical and thermal management in nanodevices by means of carbon nanotube is highly promising. One main challenge toward CNT-based nanoscale electrical and thermal management devices is the development of effective strategies for reducing the bundle-bundle interface resistance. Here we report a novel strategy, based on the densification of CNT bundles and the functionalization of inter-bundle interfaces for effectively enhanced interfacial electrical and thermal transport. The densification is realized by utilizing the local electrostatic cohesion; and the functionalization is realized by the interface-decorated functional groups. Experiments and theoretical analysis demonstrated obviously enhanced interfacial electrical and thermal conductance originates from: (1) local Coulomb electrostatic cohesion between CNT bundles due to surface-induced dipole moments. This effect can promote both electrical and thermal conductance nearly 2.8 times higher than non-functionalized counterpart. (2) Increased interfacial electron transport channels and thermal vibrations due to surface-decorated functional groups. This effect can bring about up to 75% and 95% improvement for thermal and electrical conductance, respectively. This study provides a new methodology for tunable operation of electrical and thermal properties at inter-bundle interfaces and guidance for design of CNT-based electrical and thermal management devices. (C) 2016 Elsevier Ltd. All rights reserved.
WOS Headings: Science & Technology ; Physical Sciences ; Technology
WOS Subject: Chemistry, Physical ; Materials Science, Multidisciplinary
WOS Subject Extended: Chemistry ; Materials Science
WOS Keyword Plus: INDUCED TUNNELING CONDUCTION ; RAMAN-SPECTROSCOPY ; GRAPHITE ; YARNS ; HEAT ; NETWORKS ; GRAPHENE ; SOLVENTS ; LONG
Indexed Type: SCI
Funder: National Natural Science Foundation of China (NSFC)(51306183 ; National Basic Research Program of China(2012CB933200) ; China Scholarship Council(201404910084 ; Royal Society via its International Exchanges program ; 51336009) ; 201404910085)
Language: 英语
WOS ID: WOS:000376607200029
Citation statistics:
Content Type: 期刊论文
URI: http://ir.etp.ac.cn/handle/311046/112511
Appears in Collections:中国科学院工程热物理所(论文库)_期刊论文(SCI)

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description.institution: 1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China
2.Univ Virginia, Dept Mech & Aerosp Engn, Charlottesville, VA 22904 USA
3.Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China
4.Univ Calif Riverside, Dept Mech Engn, Riverside, CA 92521 USA
5.Univ Leeds, Sch Chem & Proc Engn, Leeds LS2 9JT, W Yorkshire, England
6.Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Key Lab Nanodevices & Applicat, Suzhou 215123, Peoples R China
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