论文标题
各向异性胶体血小板的分层自组装
Hierarchical self-assembly of anisotropic colloidal platelets
论文作者
论文摘要
粒子间相互作用水平的各向异性为粒子提供了针对目标结构自组装的特定指令。如今，合成非球形胶体的能力以及通过适当放置的相互作用位点控制粒子键合模式的可能性，如今正在扩大游戏场来进行材料设计。我们考虑了一种各向异性胶体血小板的模型，具有常规的菱形形状和两个沿相邻边缘放置的有吸引力的位点，我们在二维中运行蒙特卡洛模拟，以研究这些单元的两阶段组装到具有良好定义的对称性的群集中，随后将其转化为扩展的息肉。我们的重点是如何调整位点定位和位点吸引力强度，以获得足够可靠的胶束骨料，可以连续地进行从稀疏簇进入稳定的六角形晶格的第二阶段组件。
Anisotropy at the level of the inter-particle interaction provides the particles with specific instructions for the self-assembly of target structures. The ability to synthesize non-spherical colloids, together with the possibility of controlling the particle bonding pattern via suitably placed interaction sites, is nowadays enlarging the playfield for materials design. We consider a model of anisotropic colloidal platelets with regular rhombic shape and two attractive sites placed along adjacent edges and we run Monte Carlo simulations in two-dimensions to investigate the two-stage assembly of these units into clusters with well-defined symmetries and, subsequently, into extended lattices. Our focus is on how the site positioning and site-site attraction strength can be tuned to obtain micellar aggregates that are robust enough to successively undergo to a second-stage assembly from sparse clusters into a stable hexagonal lattice.
