Color-temperature tunable white reflector using bichiral liquid crystal films | Zendy

Na Young Ha | Zendy; Soon Moon Jeong | Zendy; Suzushi Nishimura | Zendy; Hideo Takezoe | Zendy

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Color-temperature tunable white reflector using bichiral liquid crystal films

Author(s) -

Na Young Ha,

Soon Moon Jeong,

Suzushi Nishimura,

Hideo Takezoe

Publication year - 2010

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.18.026339

Subject(s) - liquid crystal , optics , materials science , cholesteric liquid crystal , standard illuminant , white light , polarization (electrochemistry) , isotropy , liquid crystal display , optoelectronics , planar , physics , chemistry , computer graphics (images) , computer science

We have demonstrated multicolored reflections showing various whitish colors from a bichiral liquid crystal (LC) film. The bichiral LC film was fabricated by using left-handed and right-handed polymeric cholesteric liquid crystal (CLC) films with two different helical pitches and an isotropic polymer film in between. Color temperatures of the multiple reflections are controlled from ~4000 K to ~10000 K by changing linear polarization directions of normally incident and reflected lights. This characteristic can extend practical applications of CLCs to illuminant devices.

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