Projects per year
Abstract
Specialized Monte Carlo simulation techniques and moment free energy method calculations, capable of treating fractionation exactly, are deployed to study the crystalline phase behaviour of an assembly of spherical particles described by a top-hat "parent" distribution of particle sizes. An increase in either the overall density or the degree of polydispersity is shown to generate a succession of phase transitions in which the system demixes into an ever greater number of face-centred cubic "daughter" phases. Each of these phases is strongly fractionated: it contains a much narrower distribution of particle sizes than is present in the system overall. Certain of the demixing transitions are found to be nearly continuous, accompanied by fluctuations in local particle size correlated over many lattice spacings. We explore possible factors controlling the stability of the phases and the character of the demixing transitions.
Original language | English |
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Pages (from-to) | 4472-4484 |
Number of pages | 13 |
Journal | Soft Matter |
Volume | 7 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2011 |
Bibliographical note
Full text author's version available from http://arxiv.org/PS_cache/arxiv/pdf/1103/1103.4734v1.pdfFingerprint
Dive into the research topics of 'Polydispersity induced solid-solid transitions in model colloids'. Together they form a unique fingerprint.Projects
- 1 Finished
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Simulation Studies of Colloidal Phase Behaviour: Beyond Effective One-Component Models
Wilding, N. (PI)
Engineering and Physical Sciences Research Council
4/08/08 → 3/08/11
Project: Research council
Equipment
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High Performance Computing (HPC) Facility
Chapman, S. (Manager)
University of BathFacility/equipment: Facility