Thermal transport in suspended SWCNTs at high heat fluxes

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• 作者：Jin-Hui Liu^a ; Huan-Huan Xie^b ; ^c ; Yu-Dong Hu^a ; Xing Zhang^a ; ^{x-zhang@tsinghua.edu.cn} ; Ying-Ying Zhang^b
• 关键词：Raman spectroscopy ; Individual SWCNT ; High heat fluxes ; Thermal transport properties
• 刊名：International Journal of Heat and Mass Transfer
• 出版年：2017
• 出版时间：May 2017
• 年：2017
• 卷：108
• 期：part_PA
• 页码：572-576
• 全文大小：1688 K
• 卷排序：108

文摘

We present an experimental study of temperature dependent thermal conductivities of SWCNTs using Micro-Raman spectroscopy. Spatially resolved temperature profiles in electrically heated individual short SWCNTs (60, 20 μm) were measured, with all the temperature profiles being highly symmetric parabolas. By comparing the temperature profiles with that predicated by Fourier’s law, the results indicated that thermal transport in SWCNTs obeys Fourier’s law at extremely high heat fluxes (1.4 × 1011 W/m2) above 300 K.