| Project/Area Number |
25630125
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Osaka University |
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Principal Investigator |
OZAKI Masanori 大阪大学, 工学(系)研究科(研究院), 教授 (50204186)
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| Co-Investigator(Kenkyū-buntansha) |
FUJII Akihiko 大阪大学, 大学院工学研究科, 准教授 (80304020)
YOSHIDA Hiroyuki 大阪大学, 大学院工学研究科, 助教 (80550045)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 液晶 / 電気光学効果 / 高分子 / ナノコンポジット / 高速応答 / 相分離 / 偏光回転子 / 複合膜 / 光重合 |
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| Outline of Final Research Achievements |
Response time after removing applied voltage is one of the most important problems in the liquid crystal devices. We have developed a polymer/liquid-crystal composite film showing short response time of the order of microsecond, which contains nano-droplet of liquid crystal with faint interfaces between polymer matrix and liquid crystal molecules. During the polymerization process to fabricate the composite film, we used mesogenic molecules as a monomer and optimized polymerization parameters such as process temperature and concentration of the monomer. Because the droplet size is less than wavelength of the light, the composite film shows electro-optic response without scattering. As an example of the device application of the composite film, we have demonstrated the fast electrical tuning of the selective reflection band wavelength and polarization rotation in the cholesteric film based on the nano-composite.
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