2018 Fiscal Year Final Research Report
Control of liquid crystal orientation by ultrasound and its application to high-speed micro optical devices
| Project/Area Number |
16K14204
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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 |
Intelligent mechanics/Mechanical systems
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| Research Institution | Doshisha University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
中村 健太郎 東京工業大学, 科学技術創成研究院, 教授 (20242315)
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Keywords | 超音波 / 液晶 / レンズ / 光デバイス |
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| Outline of Final Research Achievements |
In this study, control of liquid crystal molecular orientation using ultrasound was investigated. Ultrasound liquid crystal devices were fabricated and the effects of ultrasound vibration on the molecular orientation were evaluated experimentally. The molecular orientation of liquid crystals could be controlled spacially and temporally by the input signals to the devices. Variable-focus optical lenses using this technique were also developed. The molecular orientation of liquid crystal in the lens could be controlled by the input voltage and the focus point of the lens could be successfully controlled.
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| Free Research Field |
超音波工学，アクチュエータ工学，計測工学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究によって，超音波が液晶分子配向に与える影響の一部が明らかとなった．この技術を利用した可変焦点レンズでは，アクチュエータなどの機械的可動部が不要であり，大幅な薄型化が可能であるため．今後携帯電話等への搭載を考えた場合，デバイス全体の小型・薄型化に貢献できる．また，その高速応答性を利用することによって，今後体内診断技術などに利用可能な高速マイクロ光デバイスへの発展が期待できる．
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