Abstract
Aggregation states and electro-optical effects based on light scattering have been investigated for polymer (liquid crystal) composite films. The composite film was prepared by a solvent- evaporation method. Since a continuous liquid crystalline domain is embedded in a three-dimensional spongy network of polymer matrix, the liquid crystalline material is self-supported in the composite film in spite of its very low viscosity. The composite film composed of poly(methyl methacrylate) and a nematic LC(E44) with positive dielectric-anisotropy exhibited remarkable and reversible light scattering-light transmission switching under the modulation of an ac electric field. A light scattering state was dependent on optical heterogeneities such as a spatial distribution of nematic directors and/or mismatching in refractive indices of the components. Reversible and bistable electro-optical effects were also recognized for a smectic phase of a binary composite system composed of liquid crystalline polymer (LCP) and nematic LC. A light-addressed optical information storage of the LCP/nematic LC/(photoresponsive molecule) ternary composite membrane has also been demonstrated.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Publisher | Publ by Society of Photo-Optical Instrumentation Engineers |
| Pages | 20-31 |
| Number of pages | 12 |
| Volume | 1665 |
| ISBN (Print) | 0819408190 |
| Publication status | Published - 1992 |
| Event | Proceedings of the Conference on Liquid Crystal Materials, Devices, and Applications - San Jose, CA, USA Duration: Feb 11 1992 → Feb 13 1992 |
Other
| Other | Proceedings of the Conference on Liquid Crystal Materials, Devices, and Applications |
|---|---|
| City | San Jose, CA, USA |
| Period | 2/11/92 → 2/13/92 |
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
- Condensed Matter Physics