Entropically Driven Surface Phase Separation in Binary Colloidal Mixtures

P. D. Kaplan, J. L. Rouke, A. G. Yodh, D. J. Pine

Research output: Contribution to journalArticle

Abstract

We investigate the phase diagram of mixtures of charge stabilized polystyrene spheres of two different sizes in the hard-sphere limit. We observe bulk phase separation into two disordered phases and find a new ordered phase located on the cell walls. The ordered phase occurs at volume fractions as low as 0.2, much less than the value of 0.49 for hard-sphere freezing in monodisperse suspensions, and is qualitatively explained with simple geometric arguments.

Original languageEnglish (US)
Pages (from-to)582-585
Number of pages4
JournalPhysical Review Letters
Volume72
Issue number4
DOIs
StatePublished - 1994

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freezing
polystyrene
phase diagrams

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Entropically Driven Surface Phase Separation in Binary Colloidal Mixtures. / Kaplan, P. D.; Rouke, J. L.; Yodh, A. G.; Pine, D. J.

In: Physical Review Letters, Vol. 72, No. 4, 1994, p. 582-585.

Research output: Contribution to journalArticle

Kaplan, P. D. ; Rouke, J. L. ; Yodh, A. G. ; Pine, D. J. / Entropically Driven Surface Phase Separation in Binary Colloidal Mixtures. In: Physical Review Letters. 1994 ; Vol. 72, No. 4. pp. 582-585.
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