各向同性颗粒单分散体系的结构复杂性
Structural complexity in monodisperse systems of isotropic particles
摘要：
最近的研究表明，相同的各向同性粒子可以形成复杂的晶体和准晶体。为了理解粒子间相互作用与其所稳定的结构之间的关系，研究了一类双尺度势的相行为。在二维中，相图具有许多先前在实验和模拟中观察到的相。三维系统包括每个晶胞有30个粒子的σ相，以前没有在模拟中生长，以及非晶态，我们发现在分子动力学中不可能结晶。我们认为，在单分散系统中的结构复杂性的外观有关的竞争最近邻距离和讨论的影响，我们的结果为大分子的自组装。
英文摘要：
It has recently been shown that identical, isotropic particles can form complex crystals and quasicrystals. In order to understand the relation between the particle interaction and the structure, which it stabilizes, the phase behavior of a class of two-scale potentials is studied. In two dimensions, the phase diagram features many phases previously observed in experiment and simulation. The three-dimensional system includes the sigma phase with 30 particles per unit cell, not grown in simulations before, and an amorphous state, which we found impossible to crystallize in molecular dynamics. We suggest that the appearance of structural complexity in monodisperse systems is related to competing nearest neighbor distances and discuss implications of our result for the self-assembly of macromolecules.
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