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Monte Carlo simulation of kinetically slowed down phase separation
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Růžička, Štěpán and Allen, M. P. (2015) Monte Carlo simulation of kinetically slowed down phase separation. European Physical Journal E. Soft Matter, Volume 38 (Number 6). pp. 1-12. Article number 68. doi:10.1140/epje/i2015-15068-5 ISSN 1292-8941.
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Official URL: http://dx.doi.org/10.1140/epje/i2015-15068-5
Abstract
Supercooled colloidal or molecular systems at low densities are known to form liquid, crystalline or glassy drops, which may remain isolated for a long time before they aggregate. This paper analyses the properties of this large time window, and how it can be tackled by computer simulation. We use single-particle and virtual move Monte Carlo simulations of short-range attractive spheres which are undercooled to the temperature region, where the spinodal intersects the attractive glass line. We study two different systems and we report the following kinetic behavior. A low-density system is shown to exhibit universal linear growth regimes under single-particle Monte Carlo correlating the growth rate to the local structure. These regimes are suppressed under collective motion, where droplets aggregate into a single large disordered domain. It is shown that the aggregation can be avoided and linear regimes recovered, if long-range repulsion is added to the short-range attraction. The results provide an insight into the behavior of the virtual move algorithm generating cluster moves according to the local forcefields. We show that different choices of maximum Monte Carlo displacement affect the dynamical trajectories but lead to the same kinetically slowed down or arrested states.
| Item Type: | Journal Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||
| Library of Congress Subject Headings (LCSH): | Separation (Technology), Crystallization, Colloids, Glass transition temperature | ||||||||
| Journal or Publication Title: | European Physical Journal E. Soft Matter | ||||||||
| Publisher: | Springer | ||||||||
| ISSN: | 1292-8941 | ||||||||
| Official Date: | June 2015 | ||||||||
| Dates: |
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| Volume: | Volume 38 | ||||||||
| Number: | Number 6 | ||||||||
| Number of Pages: | 12 | ||||||||
| Page Range: | pp. 1-12 | ||||||||
| Article Number: | Article number 68 | ||||||||
| DOI: | 10.1140/epje/i2015-15068-5 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||
| Date of first compliant deposit: | 29 December 2015 | ||||||||
| Date of first compliant Open Access: | 29 December 2015 | ||||||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), University of Warwick Postgraduate Research Scholarship | ||||||||
| Grant number: | EP/I001514/1 (EPSRC) |
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