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首页> 美国政府科技报告 >Polymer-Stabilized Cholesteric Liquid Crystal Diffraction Gratings for Optical Switching and Sensor Applications
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Polymer-Stabilized Cholesteric Liquid Crystal Diffraction Gratings for Optical Switching and Sensor Applications

机译：用于光学开关和传感器应用的聚合物稳定的胆甾型液晶衍射光栅

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Low concentration polymer networks are used to stabilize various pattern-forming states of cholesteric liquid crystals. The resulting optical diffraction gratings operate with > 70% efficiency in transmission (Raman-Nath mode) and are electrically switchable between diffracting and non-diffracting states for low applied voltages (3 - 30 V). A remarkable templating of spatio- orientational order, intrinsic to the liquid crystal pattern formation, is expressed in the polymer network. Based on preliminary results on a dopable polyacetylene, the liquid crystal-based templating effect holds promise as a low cost, simple processing approach to the assembly of micron and submicron, orientationally-ordered arrays of functional polymers.

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