Development of a Thermal Conductivity Measurement System Using the 3ω Method and Application to Thermoelectric Particles |
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| Authors: | Shunsuke Nishino Mikio Koyano Koichiro Suekuni Keisuke Ohdaira |
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| Affiliation: | 1. School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan
2. Green Devices Research Center, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, 923-1292, Japan
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| Abstract: | For this study, we developed a thermal conductivity, κ, measurement system using 3ω method. We checked the system accuracy by measuring κ for a glass substrate (1737; Corning). Conventional evaporated aluminum wire and ink-jet printed silver wire were used as sensor wires. The system realized a κ measurement of glass within 10 % error. We estimated κ of aggregated p-type (Bi1?x Sb x )2Te3 particles using a two heat flow model. The estimated thermal conductivity of the sample κ sample are 0.06–0.27 WK?1 m?1, which is smaller than the bulk value. |
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