Self-assembly of monodisperse clusters: Dependence on target geometry.
Self-assembly of monodisperse clusters: Dependence on target geometry.
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单分散簇的自组装：对目标几何形状的依赖。
作者：
Alex W. Wilber;J. Doye;A. Louis
我们应用一个简单的片状粒子模型系统来研究以柏拉图固体为靶结构的单分散自组装。我们发现不同系统的组装行为有明显的差异。四面体、八面体和二十面体很容易组装，而立方体则更具挑战性，十二面体不组装。我们将这些差异与组装的动力学和热力学联系起来，大无序聚集体的形成是正确组装的一个特别重要的竞争对手。特别是，那些容易组装的靶的自由能景观是漏斗状的，而对于十二面体系统，景观相对平坦，几乎没有驱动力来促进从无序聚集体中逃脱。
We apply a simple model system of patchy particles to study monodisperse self-assembly using the Platonic solids as target structures. We find marked differences between the assembly behaviors of the different systems. Tetrahedra, octahedral, and icosahedra assemble easily, while cubes are more challenging and dodecahedra do not assemble. We relate these differences to the kinetics and thermodynamics of assembly, with the formation of large disordered aggregates a particular important competitor to correct assembly. In particular, the free energy landscapes of those targets that are easy to assemble are funnel-like, whereas for the dodecahedral system the landscape is relatively flat with little driving force to facilitate escape from disordered aggregates.
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