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Photosensitive banana-shaped antiferroelectric liquid crystal

机译：光敏香蕉形防磁液晶

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Achiral banana-shaped molecules have recently aroused much intention in academia because they can exhibit ferroelectricity or antiferroelectricity in spite of the achirality of the molecules. Using differential thermal analysis, polarizing optical microscopy and two-beam coupling techniques, we have investigated the effect of photo-irradiation on the electro-optical properties of a banana-shaped liquid crystal that contains azo-linkages in its two legs of the molecules. In the presence of an electric field (in the range of 5-20 MV/m), the polarization of the liquid crystal evolves with the duration of the photo-irradiation. Our results have demonstrated that the electro-optical properties of this azo banana-shaped liquid crystal can be controlled by external photons. The photo-induced trans-cis isomerization of the azo-linkages is suggested be responsible for the changes both in the structures of the polarization current curves and in the magnitude of polarization of the azo banana-shaped liquid crystal.
机译：成形的香蕉形分子最近在学术界中引起了很多意图，因为它们尽管分子的实现，但它们仍然可以表现出铁电性或抗废料。使用差分热分析，偏振光学显微镜和双梁耦合技术，我们研究了光辐射对香蕉形液晶的电光特性的影响，该液晶在分子的两条腿中含有偶氮键。在电场的存在（在5-20mV / m的范围内），液晶的偏振随着光辐射的持续时间而演变。我们的结果表明，这种偶氮香蕉形液晶的电光特性可以通过外部光子控制。建议使用偶氮连接的光诱导的Trans-CIS异构化对偏振电流曲线结构的变化以及偶氮香蕉形液晶的极化大小。

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