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Reentrant Phase Transition in Charged Colloidal Suspensions

Arora, Akhilesh K and Tata, BVR and Sood, AK and Kesavamoorthy, R (1988) Reentrant Phase Transition in Charged Colloidal Suspensions. In: Physical Review Letters, 60 (23). 2438 -2441.

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Abstract

We report the observation of a novel phase transition in dilute aqueous suspensions of polystyrene particles as a function of ionic impurity concentration C. The suspension phase separates into dense and rare phases only for a restricted range of C which depends on particle concentration. The dense phase has liquidlike or crystalline order depending on n and C. Free energies of the homogeneous and the phase-separated states are calculated with an effective interparticle potential. The calculated phase diagram is in qualitative agreement with the present experimental results.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to American Physical Society (APS)
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 08 Jul 2004
Last Modified: 19 Sep 2010 04:13
URI: http://eprints.iisc.ernet.in/id/eprint/553

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