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arXiv 0907.4807cond-mat.softq-bio.BM
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单分散团簇的自组装:对靶几何形状的依赖性

Self-assembly of monodisperse clusters: Dependence on target geometry

Alex W. Wilber, Jonathan P. K. Doye, Ard A. Louis

摘要:

我们应用一个简单的模型系统的补丁粒子研究单分散的自组装,使用柏拉图固体作为目标结构。我们发现不同系统的组装行为之间存在显着差异。四面体、八面体和二十面体很容易组装,而立方体更具挑战性,十二面体无法组装。我们将这些差异与组装的动力学和热力学相关,其中大型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,那些容易组装的目标的自由能景观是漏斗状的,而对于十二面体系统的景观是相对平坦的,几乎没有驱动力,以促进从无序聚集体逃逸。

英文摘要:

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 behaviours of the different systems. Tetrahedra, octahedra 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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