A NEW ELECTRIC-FIELD-CONTROLLED REFLECTIVE OPTICAL STORAGE EFFECT IN MIXED-LIQUID CRYSTAL SYSTEMS

Abstract
A new reflective optical storage effect has been found in mixtures of certain nematic liquid crystals and cholesteric liquid crystals. When subjected to a dc field, the initially clear material becomes milky white and remains in this state when the field is removed. The material can be rapidly switched back to its clear state by an audio‐frequency signal. A preliminary model based on the principle of a field‐induced emulsion gives rough agreement with experiment.

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