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Electrical tuning of selective reflection of light is achieved in a very broad spectral range from ultraviolet to visible and infrared by an oblique helicoidal state of a cholesteric liquid crystal in a wide temperature range (including room temperature). The phenomenon offers potential applications in tunable smart windows, lasers, optical filters and limiters, as well as in displays.
Cholesteric liquid crystals with a new heliconical structure are demonstrated to change the color of reflected light when acted upon an alternating current electric field. As demonstrated by O. D. Lavrentovich and co‐workers on page 3014, the colors are tuned dynamically in a very broad range, from ultraviolet to visible and infrared. The electrically controlled selective reflection can be used in...
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