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Determination of Thermal Conductivity of Liquids by a Multi-Point Laser Pump Method |
| MA Di1;KUO Pao-Kuang1,2;XU Xiao-Dong1; ZHANG Shu-Yi1 |
| 1Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 2100932Department of Physics, Wayne State University, Detroit, Michigan 48202, USA |
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| Cite this article: |
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MA Di, KUO Pao-Kuang, XU Xiao-Dong et al 2007 Chin. Phys. Lett. 24 3187-3190 |
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Abstract As an advanced optical method, a multi-point pump method is presented for measurements of thermo-physical properties of liquids. Meanwhile, based on the laser-induced thermal grating method, a new theory model is presented and used to analyse the thermal effects caused by the multi-point laser pump, by which the thermal conductivity of liquids can be obtained. The results of some typical liquids, such as water, ethanol and acetone, are presented and are consistent with those of acknowledged values, demonstrating that the multi-point method is simple and useful for characterizing thermal properties of liquids.
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44.10.+i
65.20.+w
66.60.+a
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Received: 15 June 2007
Published: 23 October 2007
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