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Metastable states and the kinetics of colloid phase separation

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Soga, K. Geoffrey, Melrose, John R. and Ball, Robin (1999) Metastable states and the kinetics of colloid phase separation. The Journal of Chemical Physics, Vol.110 (No.4). p. 2280. doi:10.1063/1.477881

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Official URL: http://dx.doi.org/10.1063/1.477881

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Abstract

We report on the results of extensive Brownian dynamics simulations of colloid phase separation due to depletion flocculation. We study in detail the effect of potential variation at fixed volume fraction of colloid and fixed range of interaction. We find a variety of nonequilibrium behaviors for quenches into the colloid fluid+crystal phase coexistence regime. We present clear evidence of metastability, of homogeneous nucleation, and of a kinetically arrested gel state. We also find evidence that suggests a density instability in the metastable colloid fluid preceding crystal nucleation. Our findings are consistent with a previous proposal that nonequilibrium behavior is determined by a metastable vapor+liquid binodal hidden in the fluid+crystal phase coexistence regime

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Colloids, Phase transformations (Statistical physics), Brownian movements
Journal or Publication Title: The Journal of Chemical Physics
Publisher: American Institute of Physics
ISSN: 0021-9606
Official Date: 1999
Dates:
DateEvent
1999Published
Volume: Vol.110
Number: No.4
Page Range: p. 2280
DOI: 10.1063/1.477881
Status: Peer Reviewed
Publication Status: Published

Data sourced from Thomson Reuters' Web of Knowledge

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