Crystallization and arrest mechanisms of model colloids

Thomas K. Haxton, Lester O. Hedges, Stephen Whitelam

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

We performed dynamic simulations of spheres with short-range attractive interactions for many values of interaction strength and range. Fast crystallization occurs in a localized region of this parameter space, but the character of crystallization pathways is not uniform within this region. Pathways range from one-step, in which a crystal nucleates directly from a gas, to two-step, in which substantial liquid-like clusters form and only subsequently become crystalline. Crystallization can fail because of slow nucleation from either gas or liquid, or because of dynamic arrest caused by strong interactions. Arrested states are characterized by the formation of networks of face-sharing tetrahedra that can be detected by a local common neighbor analysis.

Original languageEnglish
Pages (from-to)9307-9320
Number of pages14
JournalSoft Matter
Volume11
Issue number48
Early online date11 Sep 2015
DOIs
Publication statusPublished - 28 Dec 2015

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