Electrically tunable birefringence of a polymer composite with long-range orientational ordering of liquid crystals

We report an optical film with electrically tunable birefringence in which the liquid crystals (LCs), mixed with the host polymer, form long-range ordering. The film was prepared through polymerization without phase separation between the LCs and polymers. Driving voltage below 30 V for full switchi...

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Bibliographic Details
Published inOptics express Vol. 22; no. 15; pp. 18027 - 18035
Main Authors Choi, Byeongdae, Song, Seongkyu, Jeong, Soon Moon, Chung, Seok-Hwan, Glushchenko, Anatoliy
Format Journal Article
LanguageEnglish
Published United States 28.07.2014
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Summary:We report an optical film with electrically tunable birefringence in which the liquid crystals (LCs), mixed with the host polymer, form long-range ordering. The film was prepared through polymerization without phase separation between the LCs and polymers. Driving voltage below 30 V for full switching of birefringence is achieved in a 6 μm-thick film. Electro-optical investigations for the film suggest that the long-range ordering of the LCs mixed in the film caused by polymerization lead to rotations of the LCs as well as optical anisotropy in the film. These films with electrically tunable birefringence could have applications as flexible light modulators and phase retardation films for 2D-3D image switching.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.22.018027