| Project/Area Number |
60850004
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| Research Category |
Grant-in-Aid for Developmental Scientific Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Applied materials
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| Research Institution | Nagoya University |
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Principal Investigator |
HATTA Ichiro Nagoya University, School of Engineering, Professor, 工学部, 教授 (70016070)
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| Co-Investigator(Kenkyū-buntansha) |
KATO Ryozo SINKU-RIKO Inc., Manager (, AE事業部, 室長
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| Project Period (FY) |
1985 – 1987
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| Project Status |
Completed (Fiscal Year 1987)
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| Budget Amount *help |
¥15,000,000 (Direct Cost: ¥15,000,000)
Fiscal Year 1987: ¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 1986: ¥5,000,000 (Direct Cost: ¥5,000,000)
Fiscal Year 1985: ¥6,000,000 (Direct Cost: ¥6,000,000)
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| Keywords | ac calorimetry / thermal measurement / experimental technique / thin film / thermal diffusivity / thermophysical property / 熱物性 / 材料評価 |
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| Research Abstract |
a new method to measure thermal diffusivity of a thin sample was developed using a light-irradiated ac calorimetric technique. The experimental conditions and the fundamental equations for the measurement are discussed< In principle, this method can be applied no matter how thin a sample may be. This method is applicable to materials not only with low thermal diffusivity such as polymer films but also with ones with high thermal diffusivity such as a diamond film. In a very thin sample, the contribution of addenda, thermocouple, glue etc., to the precise measurement should be considered. From both theory and experiment, it is verified that the addenda do not affect determination of the thermal diffusivity. We used rectangular plate-like samples which were partly shadowed by a mask. The sample dimension required for the measurement was considered. For the sample length, the distance between the thermocouple and the sample bundary on which ac light is irradiated should be sufficiently long so that thermal waves reflected at the boundary decay. On the other hand, there is no restriction on the other boundary shadowed by the mask, i. e., the thermocouple can be placed just at the boundary.
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