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Blue phases are well known for their faster optical response. One of the shortcomings to exploit blue phases for device applications is obtaining uniform alignment. Blue phases generally exhibit polycrystalline domains, which hinder photonic and electro-optical properties, due to grain boundaries. Also, the polycrystallinity increases the operating voltage and gives rise to hysteresis. In a recent paper by Martinez-Gonzalez et al., a strategy has been proposed to obtain macroscopic single-crystal blue phases using nano-patterned substrates. The authors report both simulation and experimental study of interaction of blue phases with different substrates having stripy, rectangular and circular patterns. The patterned surfaces without affecting the structural and thermal behaviour of the phases seemed to seed correct crystallographic orientations in the proximity of the interface, thereby preventing the material from adapting unfavourable orientations.
机译:蓝色相对于它们更快的光学响应是众所周知的。 用于设备应用程序的蓝阶的缺点之一是获得均匀对准。 蓝相通常表现出多晶域,其由于晶界引起的妨碍光子和电光性能。 而且,多晶度增加了工作电压并产生滞后。 在最近的一篇文章中,采用纳米图案底物获得了一种策略以获得宏观单晶蓝相。 作者报告了具有具有条纹,矩形和圆形图案的不同基板的蓝相相互作用的模拟和实验研究。 图案化表面而不影响阶段的结构和热行为似乎在界面接近地进行了种子正确的晶体取向,从而防止材料适应不利的取向。

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