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Issue 3, 2012
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Polymer-enforced crystallization of a eutectic binary hard sphere mixture

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Abstract

We prepared a buoyancy matched binary mixture of polydisperse polystyrene microgel spheres of size ratio Γ = 0.785 at a volume fraction of Φ = 0.567 just below the kinetic glass transition. In line with theoretical expectations, a eutectic phase behaviour was observed, but only a minor fraction of the samples crystallized at all. By adding a short non-adsorbing polymer we enforce inter-species fractionation into coexisting pure component crystals, which in turn also shows signs of intra-species fractionation. We show that in formerly inaccessible regions of the phase diagram binary hard sphere physics are made observable using attractive hard spheres.

Graphical abstract: Polymer-enforced crystallization of a eutectic binary hard sphere mixture

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Publication details

The article was received on 08 Sep 2011, accepted on 04 Nov 2011 and first published on 06 Dec 2011


Article type: Communication
DOI: 10.1039/C1SM06699D
Citation: Soft Matter, 2012,8, 627-630
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    Polymer-enforced crystallization of a eutectic binary hard sphere mixture

    A. Kozina, D. Sagawe, P. Díaz-Leyva, E. Bartsch and T. Palberg, Soft Matter, 2012, 8, 627
    DOI: 10.1039/C1SM06699D

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