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首页> 外文会议>Emerging liquid crystal technologies XI >Transmission polarized optical microscopy of short-pitch cholesteric liquid crystal shells
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Transmission polarized optical microscopy of short-pitch cholesteric liquid crystal shells

机译：短节距胆甾型液晶壳的透射偏振光学显微镜

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We recently demonstrated that colloidal crystal arrangements of monodisperse droplets or shells of planar-aligned cholesteric liquid crystal exhibit intricate patterns of circularly polarized reflection spots of different colors. The spots appear as a result of photonic cross communication between droplets, hence the patterns reflect the macroscopic arrangement of droplets or shells. Apart from being an interesting optical phenomenon, it offers attractive application opportunities in photonics and beyond, due to the unique characteristics of the patterns. It turns out that the optical quality of shells is much enhanced compared to that of droplets, hence we focus our attention primarily on shells, of varying thickness. Here we analyze and explain the intriguing textures arising when studying planar-aligned short-pitch cholesteric shells in transmission polarizing optical microscopy. In this case, the texture reflects the properties of each individual shell, without any sign of cross communication, yet also this pattern holds some fascinating mysteries. These can only be elucidated by considering all the peculiar optical properties of cholesterics together, as well as the unusual situation given by the spherical shell geometry.
机译：我们最近证明，平面排列的胆甾型液晶的单分散液滴或壳的胶体晶体排列表现出不同颜色的圆偏振反射点的复杂图案。这些斑点是由于液滴之间的光子交叉通信而出现的，因此这些图案反映了液滴或壳的宏观排列。除了是有趣的光学现象外，由于图案的独特特性，它还提供了在光子学及其他领域有吸引力的应用机会。事实证明，与水滴相比，贝壳的光学质量有了很大提高，因此，我们主要将注意力集中在厚度不同的贝壳上。在这里，我们分析和解释在透射偏振光学显微镜中研究平面排列的短节距胆甾型壳时产生的有趣纹理。在这种情况下，纹理反映了每个单独的壳的特性，没有任何交叉沟通的迹象，但这种图案也保留了一些令人着迷的谜团。只能通过综合考虑胆甾醇的所有特殊光学特性以及球形壳体几何形状所带来的异常情况，来阐明这些问题。

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