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Light-directing self-organized 1D and 3D chiral liquid crystalline nanostructures

机译：导光自组织的1D和3D手性液晶纳米结构

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摘要

A brief overview of recent research and developments in our laboratory toward the fabrication and application of photoresponsive cholesteric liquid crystals, microshells and microdroplets, and blue phase is presented here. We have designed and synthesized a variety of light-driven chiral molecular switches and doped into achiral nematic liquid crystals hosts to obtain photoresponsive cholesteric liquid crystals and blue phase. By irradiation with light of suitable wavelengths, it has been possible to tune the reflection color of cholesteric liquid crystals and blue phase over a wide range across the visible spectrum. By doping upconversion nanoparticles into photoresponsive cholesteric liquid crystals, the reflection color tuning has been accomplished by irradiation with near infrared light. Moreover, cholesteric microshells have been fabricated which exhibit omnidirectional lasing. Similarly, cholesteric microdroplets have been found to display omnidirectional selective reflection and photonic cross communication. Wide-range non-mechanical beam steering has been demonstrated in a phoresponsive cholesteric liquid crystal sample. This short summary of our recent research work shows that the century old fascinating cholesteric liquid crystals have diverse opportunities to offer.
机译：本文简要介绍了我们实验室在光响应胆甾型液晶，微壳和微滴以及蓝相的制造和应用方面的最新研究进展。我们已经设计并合成了多种光驱动手性分子开关，并掺入非手性向列型液晶主体中以获得光响应性胆甾型液晶和蓝相。通过用适当波长的光照射，可以在可见光谱的宽范围内调节胆甾型液晶和蓝相的反射颜色。通过将上转换纳米粒子掺杂到光敏胆甾型液晶中，已经通过用近红外光照射来完成反射色调整。此外，已经制造出表现出全向激光发射的胆甾型微壳。类似地，已经发现胆甾型微滴显示全向选择性反射和光子交叉通信。在具有光响应性的胆甾型液晶样品中已证明了宽范围的非机械光束转向。我们近期研究工作的简短摘要表明，具有百年历史的迷人胆甾型液晶提供了多种机会。

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