标题： 粒子尺寸多分散性对薄膜胶体晶体质量的影响 显示英文标题

标题： Impact of particle-size polydispersity on the quality of thin-film colloidal crystals

摘要： 胶体粒子的尺寸多分散性会破坏其自组装中的秩序，最终导致结晶的完全抑制。 与各种计算研究相反，很少有实验研究系统地探讨尺寸多分散性对胶体晶体质量的影响。 我们进行了一项实验研究，研究从具有系统变化的多分散性的胶体分散液垂直干燥形成的薄层晶体中的结构秩序。 如预期的那样，多分散性的增加会导致秩序恶化，在8%和12%多分散性时局部键取向秩序出现显著下降。 我们的结果与之前提出的在对流组装过程中二维层的外延类似生长模型一致。 我们的结果可以为从更多多分散的系统（如通过更可持续的方法合成的系统）实现胶体晶体的允许极限提供关键见解。 显示英文摘要

摘要： Size polydispersity in colloidal particles can disrupt order in their self-assembly, ultimately leading to a complete suppression of crystallization. In contrast to various computational studies, few experimental studies systematically address the effects of size polydispersity on the quality of colloidal crystals. We present an experimental study of structural order in thin films of crystals vertically dried from colloidal dispersions with a systematically varying polydispersity. As expected, an increase in polydispersity leads to a deterioration in order with significant drops in the local bond-orientational order at 8% and 12% polydispersity. Our results align with previously suggested models of epitaxial-like growth of 2D layers during convective assembly. Our results can offer critical insights into the permissible limits for achieving colloidal crystals from more polydisperse systems such as those synthesized through more sustainable methods.