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	Simultaneous measurements of the specific heat and thermal conductivity of suspended thin samples by transient electrothermal method
	Bo Feng ; Weigang Ma ; Zhixin Li ; Xing Zhang
	2010-10-12 ; 2010-10-12
关键词	Theoretical or Mathematical Experimental/ finite volume methods heat radiation heat sinks platinum specific heat thermal conductivity thermal conductivity measurement thermal resistance/ specific heat measurement thermal conductivity measurement suspended thin samples transient electrothermal method heat sinks pulsed direct current dc offset Joule self-heating transient heat conduction equations finite volume method platinum wire thermal radiation thermal boundary resistance size 10 mum Pt/ A0720 Thermal instruments and techniques A6540 Heat capacities of solids A6670 Nonelectronic thermal conduction and heat-pulse propagation in nonmetallic solids A7215 Electronic conduction in metals and alloys A4440 Heat radiation B7320R Thermal variables measurement/ size 1.0E-05 m/ Pt/el
中文摘要	The electrothermal technique is developed to simultaneously measure the specific heat and thermal conductivity of individual thin samples suspended across two heat sinks, resorting to pulsed direct currents with or without a dc offset. The temperature evolution due to Joule self-heating is recorded and compared with the numerical solutions of transient heat conduction equations using the finite volume method. The thermal conductivity is determined by the steady temperature level and the specific heat by the transient temperature rise or relaxation. This technique is applied to a 10 mu m thick platinum wire and the thermal conductivity and specific heat are in good agreement with the literature values. In addition, the influences of thermal radiation and thermal boundary resistance between the sample and heat sinks on the experimental results are discussed.
语种	英语
出版者	American Institute of Physics ; USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79079]
专题	清华大学
推荐引用方式 GB/T 7714	Bo Feng,Weigang Ma,Zhixin Li,et al. Simultaneous measurements of the specific heat and thermal conductivity of suspended thin samples by transient electrothermal method[J],2010, 2010.
APA	Bo Feng,Weigang Ma,Zhixin Li,&Xing Zhang.(2010).Simultaneous measurements of the specific heat and thermal conductivity of suspended thin samples by transient electrothermal method..
MLA	Bo Feng,et al."Simultaneous measurements of the specific heat and thermal conductivity of suspended thin samples by transient electrothermal method".(2010).

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