| Project/Area Number |
23560427
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Kobe City College of Technology |
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Principal Investigator |
OGIWARA AKIFUMI 神戸市立工業高等専門学校, その他部局等, 教授 (00342569)
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| Co-Investigator(Kenkyū-buntansha) |
ONO Hiroshi 長岡技術科学大学, 電気系, 教授 (10283029)
KAKIUCHIDA Hiroshi 独立行政法人産業技術総合研究所, サステナブルマテリアル研究部門, 主任研究員 (40343660)
YOSHIMURA Kazuki 独立行政法人産業技術総合研究所, サステナブルマテリアル研究部門, 研究グループ長 (50358347)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | 光デバイス / 分光 / 光制御 / 感温型 / 液晶 / 省エネルギー / 高分子 / 回折 / 調光 / 温度 / 波長 / レーザ / ホログラム |
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| Research Abstract |
A microperiodic structure composed of polymer and liquid crystal (LC) phases, called holographic polymer dispersed liquid crystal (HPDLC), was fabricated based on a photo-induced phase separation technique by laser interferometric exposure. The diffraction wavelength of HPDLC gratings formed by different LC composites and grating structures was experimentally investigated by spectroscopic measurements as a function of temperature at around 30 degree. The HPDLC gratings composed of nematic LC having low nematic to isotropic temperature (TNI) and different film thickness from 10 to 25 microns showed the switch of diffraction wavelength between visible and infrared lights by the change of temperature. The temperature dependence of the solar and luminous transmittances achieved in HPDLC gratings were applicable for the basis of diffractive type of thermo-driven light controller which can supply visibility constantly for solar-ray control windows.
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