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Polarization-independent multiple selective reflections from bichiral liquid crystal films
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We have demonstrated polarization-independent multiple reflections covering overall visible region from a bichiral liquid crystal(LC)film with both chiral structures. The bichiral LCfilm was fabricated by an all-solution process using left-handed and right-handed polymeric cholesteric liquid crystal (CLC) films with a single pitch and an isotropic polymer film. The multiple reflections exceeding 50% reflectance were clearly observed at various polarizations of normally incident light. This characteristic can extend practical applications of CLCs to polarization-independent devices over broad-band regions.
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