Electrochromic devices have found widespread use in automotive, aerospace, and architectural implementations. Electrical control of the absorption of metallic or polymeric materials can result in transmission swings of more than 50%. This talk will detail our recent research of liquid crystalline compositions in which the selective reflection can be tuned, broadened, and switched. This distinctive electro-optic control is enabled by polymer stabilization of the cholesteric liquid crystal phase. Through control of the materials chemistry and polymerization conditions, we will report findings in which we uniquely demonstrate dynamic control of two separate reflective bands in a single element.
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