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Preparation of newly designed reverse mode polymer dispersed liquid crystals and its electro-optic characteristics
- Preparation of newly designed reverse mode polymer dispersed liquid crystals and its electro-optic characteristics
- Hwang, Sung-Ho; Yang, Kee Jeong; Woo, Sung Ho; Choi, Byeongdae; Kim, Eun-Hee; Kim, Byeong-Kyu
- DGIST Authors
- Hwang, Sung-Ho; Yang, Kee Jeong; Woo, Sung Ho; Choi, Byeongdae
- Issue Date
- Molecular Crystals and Liquid Crystals, 470(1), 163-171
- Article Type
- Article; Proceedings Paper
- Anisotropy; Dielectric Properties; Electro-Optic Property; Electro-Optical Effects; Liquid Crystals; Phase Separation; Polymer Dispersed Liquid Crystal (PDLC); Polymerization; Polymerization Induced Phase Separation
- Polymer Dispersed Liquid Crystal (PDLC) films, of which the liquid crystal has negative dielectric anisotropy, were prepared from the phase separation between liquid crystal (MJ001317) and the various compositions of resins by common polymerization induced phase separation method. In this work, the effects of resin compositions have been systematically investigated. It was found that the morphology and size of droplets related to electro-optic properties mainly depend on the rate of polymerization and cross-linking density for each resin composition. A reverse mode PDLC films developed from a new formulation containing TPGDA/EHA/HMPPO showed the good off-state transmittance, contrast ratio (19:1), and relatively low driving voltage (10 V).
- Taylor and Francis
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