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Photoswitchable and dye-doped bubble domain texture of cholesteric liquid crystals

机译:胆甾型液晶的光开关和掺杂染料的气泡域纹理

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摘要

We demonstrate control of the transmittance of the naturally formed bubble domain (BD) texture of cholesteric liquid crystals (CLC) with negative dielectric anisotropy confined into a cell with homeotropic surface anchoring. By using a photosensitive chiral dopant with variable helical twisting power under light irradiation, control of packing density of bubbles, spatial patterning, and all optical switching between bistable states with different optical densities is achieved. By introducing dichroic dye into the CLC mixture, a bistable and switchable by applied electric field guest-host system is obtained. The light dimming properties of dye-doped BD CLC systems may lead to development of a wide range of applications. (C) 2015 Optical Society of America
机译:我们展示了具有负介电各向异性的胆甾型液晶(CLC)的自然形成的气泡域(BD)纹理的透射率的控制,负性介电各向异性被限制在具有垂直表面锚定的单元中。通过使用在光照射下具有可变螺旋扭曲能力的光敏手性掺杂剂,可以控制气泡的堆积密度,空间图案化以及具有不同光密度的双稳态之间的所有光学转换。通过将二向色性染料引入CLC混合物中,可通过施加的电场客体-宿主系统获得双稳态和可切换的。染料掺杂的BD CLC系统的调光性能可能会导致广泛的应用开发。 (C)2015年美国眼镜学会

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