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.

Preview

PDF p2438_1.pdf Download (154kB)

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
Publication:	Physical Review Letters
Publisher:	American Physical Society (APS)
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.ac.in/id/eprint/553

Actions (login required)

View Item