Thermally tunable light filter composed of cholesteric liquid crystals with different temperature dependence
Thermally tunable light filter composed of cholesteric liquid crystals with different temperature dependence
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DOI：
10.1016/j.solmat.2016.05.039
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发表时间：
2016-12-01
影响因子：
6.9
通讯作者：
Kakiuchida, Hiroshi
中科院分区：
文献类型：
--
作者：
Ogiwara, Akifumi;Kakiuchida, Hiroshi
提出了一种利用胆甾型液晶作为反射型光学器件的热可调滤光片，用于先进的胆甾型液晶驱动光控制器，以实现对太阳光线的有效控制，而不丢失室外视野和安装额外的薄膜。利用不同大小和旋扭功率（HTP）符号的手性掺杂剂复合材料制备胆甾型液晶，以控制选择性透射光谱的温度依赖性。通过引入手性掺杂剂混合物的理论方程，解释了手性掺杂剂对选择性波长温度依赖性的影响。通过不同浓度的聚合物在不同温度下的光谱测量，研究了聚合物稳定胆甾液晶的光学性质。由具有不同温度依赖性的CLCs组合而成的可调谐滤光片的光学性能证明了其作为反射热驱动太阳光线控制器的应用。(C) 2016 Elsevier B.V.版权所有
A thermally tunable light filter by using cholesteric liquid crystals as a reflective type of optical device is proposed for an advanced thereto-driven light controller to realize the efficient control of solar-rays without losing the outdoor view and mounting the additional films. The cholesteric liquid crystals (CLCs) are fabricated to control the temperature dependence of selective transmittance spectra by using the composites of chiral dopants with different magnitude and sign of helical twisting power (HTP). The effects of chiral dopants on temperature dependence of selective wavelength are explained by the theoretical equation introduced for the mixture of chiral dopants. The optical properties for polymer stabilized cholesteric liquid crystal are also investigated by the spectroscopic measurements at different temperature in the various polymer,,concentrations. The optical performance of the tunable light filter formed by the combination of CLCs with different temperature dependence is demonstrated for the application as a reflective thermo-driven solar-ray controller. (C) 2016 Elsevier B.V. All rights reserved.