Design of 2D binary colloidal crystals in a nematic liquid crystal.
Design of 2D binary colloidal crystals in a nematic liquid crystal.
复制标题
向列液晶中二维二元胶体晶体的设计。
作者：
U. Ognysta;A. Nych;V. Nazarenko;M. Škarabot;I. Muševič
在本文中，我们研究了分散在向列液晶中、具有正常表面边界条件的偶极和四极胶体粒子的二维二元系统中的定向自组装。使用激光镊子，我们组装了多种稳定的二维胶体晶体结构。在所有分析的结构中，颗粒、其表面处理和细胞条件都是相同的，这使我们能够系统地跟踪存在许多颗粒时胶体组装的演变。我们提出了液晶介质中分子自组装和胶体微球组织之间的类比，以扩展设计不同复杂程度的胶体晶体结构的策略。
In this paper, we examine directed self-assembly in a 2D binary system of dipolar and quadrupolar colloidal particles with normal surface boundary conditions, dispersed in the nematic liquid crystal. Using the laser tweezers, we assembled a large variety of stable 2D colloidal crystal structures. In all analyzed structures, the particles, their surface treatment and the cell conditions were the same, which gives us the ability to systematically follow the evolution of colloidal assembly when many particles are present. We present an analogy between molecular self-assembly and organization of colloidal microspheres in liquid crystalline medium to extend the strategy for designing colloidal crystalline structures of different level of complexity.