2016 Fiscal Year Final Research Report
Competitive contribution of dielectric and elastic free energies to rotation of anisotropic micro-particles dispersed in liquid crystal host
| Project/Area Number |
15K13950
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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 |
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Keywords | 液晶 / 光重合 / 誘電異方性 / 弾性場 / マイクロ粒子 |
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| Outline of Final Research Achievements |
We demonstrated electric field-induced rotation control of liquid crystal (LC) micro-particles in a LC host, and unravel its mechanism by theoretically calculating the contributing free energies. Cuboid-shaped micro-particles with inner molecular alignment along the long axis are fabricated via two-photon excited direct laser writing, and dispersed in a dual-frequency LC to be electrically driven by a voltage applied in the in-plane direction of the cell. Under an electric field, the particles rotate either clockwise or anticlockwise to align the inner molecular alignment parallel or perpendicular to the applied field. The complex motion is found to be the result of a delicate balance between the elastic energy of the host LC around the particle and the electrostatic energies of the host and the particle.
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| Free Research Field |
電子工学
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