The self-assembly of colloidal nanoparticles into ordered structures induced by liquid crystals (LCs) shows great promise for innovative electric–optic devices. However, the large size of colloidal nanoparticles is a challenge for realizing highly ordered assemblies. In this work, micrometer-long colloidal silver nanowires (AgNWs) are dispersed in a nematic LC host, leading to a nanowire orientation that is orthogonal to the LC director. The colloidal nanowires align inside an LC cell with rubbed alignment layers, achieving an order parameter exceeding 0.9. In addition, self-assembly of colloidal AgNWs in micro domains with different orientations was obtained using photoalignment technology. The alignment of nanowires under the influence of the electric field increased the response speed of the LC devices. This research uncovers the interaction between nanowires and LC molecules, demonstrating the orientational ordering of AgNW colloids in micromulti domains. These findings provide a valuable strategy for designing self-assembled nanomaterials and practical electric–optic devices.

中文翻译：

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长程有序向列液晶主体中大胶体银纳米线的精确自组装


由液晶（LC）诱导的胶体纳米粒子自组装成有序结构为创新电光器件展现了巨大的前景。然而，大尺寸的胶体纳米颗粒对于实现高度有序的组装是一个挑战。在这项工作中，微米长的胶体银纳米线（AgNW）分散在向列液晶主体中，导致纳米线方向与液晶指向矢正交。胶体纳米线在液晶盒内通过摩擦排列层排列，实现了超过 0.9 的有序参数。此外，利用光对准技术获得了不同方向的胶体银纳米线的自组装微域。纳米线在电场影响下的排列提高了液晶器件的响应速度。这项研究揭示了纳米线和液晶分子之间的相互作用，证明了 AgNW 胶体在微多域中的定向排序。这些发现为设计自组装纳米材料和实用电光器件提供了有价值的策略。