A Minimal description of morphological hierarchy in two-dimensional aggregates
arXiv:1502.03161 · doi:10.1039/C5SM01222H
Abstract
A dimensionless parameter is proposed to describe a hierarchy of morphologies in two-dimensional (2D) aggregates formed due to varying competition between short-range attraction and long-range repul- sion. Structural transitions from finite non-compact to compact to percolated structures are observed in the configurations simulated by molecular dynamics at a constant temperature and density. Configurational randomness across the transition, measured by the two-body excess entropy , exhibits data collapse with the average potential energy of the systems. Independent master curves are presented among , the reduced second virial coefficient and , justifying this minimal description. This work lays out a coherent basis for the study of 2D aggregate morphologies relevant to diverse nano- and bio-processes.
arXiv comment7 pages, 7 figures (Final revised and accepted version) in Soft Matter 2015
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