| Project/Area Number |
26820058
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Thermal engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
UENO Ai 東京大学, 工学(系)研究科(研究院), 研究員 (50647211)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 熱ふく射 / 近接場 / ナノギャップ / MEMSラジエータ / 近接場効果 / 熱ふく射制御 / MEMS / 静電アクチュエータ |
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| Outline of Final Research Achievements |
Radiation control is crucial to maintain the operation temperature of satellites under varying irradiation of sunlight. Previously, bulky heat exchangers with heat pipe or thermal louvers/shutters with a low fill factor are proposed for the task, although they are not suitable for next-generation small satellites. In the present study, we propose an array of electrostatically-driven MEMS(Micro-Electro-Mechanical Systems) diaphragms for active control of thermal radiation using the near-field effect. We have successfully fabricated a prototype with parylene shared springs and achieved a fill factor of as high as 89 %. It is found that at the ON state, the diaphragm temperature is increased from 58.0 ℃ to 106.4 ℃, showing 144 % enhancement in the radiation heat flux.
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