材料科学
微晶
液晶
相(物质)
格子(音乐)
软物质
理想(伦理)
结晶学
纳米技术
化学物理
拓扑(电路)
光电子学
胶体
化学
物理
哲学
物理化学
声学
有机化学
组合数学
冶金
认识论
数学
作者
José A. Martínez‐González,Xiao Li,Monirosadat Sadati,Ye Zhou,Rui Zhang,Paul F. Nealey,Juan J. de Pablo
摘要
Chiral nematic liquid crystals are known to form blue phases-liquid states of matter that exhibit ordered cubic arrangements of topological defects. Blue-phase specimens, however, are generally polycrystalline, consisting of randomly oriented domains that limit their performance in applications. A strategy that relies on nano-patterned substrates is presented here for preparation of stable, macroscopic single-crystal blue-phase materials. Different template designs are conceived to exert control over different planes of the blue-phase lattice orientation with respect to the underlying substrate. Experiments are then used to demonstrate that it is indeed possible to create stable single-crystal blue-phase domains with the desired orientation over large regions. These results provide a potential avenue to fully exploit the electro-optical properties of blue phases, which have been hindered by the existence of grain boundaries.
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