2011
DOI: 10.1063/1.3646212
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Doubled heterogeneous crystal nucleation in sediments of hard sphere binary-mass mixtures

Abstract: Crystallization during the sedimentation process of a binary colloidal hard spheres mixture is explored by Brownian dynamics computer simulations. The two species are different in buoyant mass but have the same interaction diameter. Starting from a completely mixed system in a finite container, gravity is suddenly turned on, and the crystallization process in the sample is monitored. If the Peclet numbers of the two species are both not too large, crystalline layers are formed at the bottom of the cell. The co… Show more

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Cited by 5 publications
(6 citation statements)
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“…Moreover, it is known that the crystallization process out of an undercooled melt depends sensitively on the mobility ratio in binary systems [39] such that the magnetic field can be used to tune crystal nucleation in mixtures [40][41][42][43].…”
Section: Discussionmentioning
confidence: 99%
“…Moreover, it is known that the crystallization process out of an undercooled melt depends sensitively on the mobility ratio in binary systems [39] such that the magnetic field can be used to tune crystal nucleation in mixtures [40][41][42][43].…”
Section: Discussionmentioning
confidence: 99%
“…For future studies, as regards binary systems, a systematic understanding of the two-dimensional glass transition in binary mixtures is lying ahead where the magnetic field is exploited as a steering wheel to change the mobility ratio between the particle species. Moreover, it is known that the crystallization process out of an undercooled melt depends sensitively on the mobility ratio in binary systems [39] such that the magnetic field can be used to tune crystal nucleation in mixtures [40][41][42][43].…”
Section: Discussionmentioning
confidence: 99%
“…The crystallization effect can be significantly modified in the presence of other external fields like gravity or external electric fields [36,37]. Most of the features can by now be quantitatively encaptured by BD computer simulations of simple models [38,39] (like a hard sphere model with an effective interaction diameter σ ) which typically neglect hydrodynamic interactions. Under gravity, more effects were predicted by simulations, like a huge interfacial broadening [38] and a doubled heterogeneous crystallization in mass-binary mixtures [39].…”
Section: Heterogeneous Crystallization Near a Wall For A Binary-mobilmentioning
confidence: 99%
“…Most of the features can by now be quantitatively encaptured by BD computer simulations of simple models [38,39] (like a hard sphere model with an effective interaction diameter σ ) which typically neglect hydrodynamic interactions. Under gravity, more effects were predicted by simulations, like a huge interfacial broadening [38] and a doubled heterogeneous crystallization in mass-binary mixtures [39]. These effects can in principle be verified in future real-space experiments with colloidal mixtures or dusty plasmas.…”
Section: Heterogeneous Crystallization Near a Wall For A Binary-mobilmentioning
confidence: 99%