Microemulsions: A Landau-Ginzburg theory

Chen, Kan and Jayaprakash, C and Pandit, Rahul and Wenzel, Wolfgang (1990) Microemulsions: A Landau-Ginzburg theory. In: Physicl Review Letters, 65 (21). pp. 2736-2739.

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Abstract

We present a Landau-Ginzburg theory for oil-water-surfactant mixtures with a scalar order parameter psi for the oil-water subsystem and a vector tau for the surfactant part. A physical interpretation of the parameters in terms of single-membrane energetics is given. A detailed density-functional calculation yields three-phase coexistence between oil-rich, water-rich, and microemulsion phases, and modulated phases including lamellar, columnar, and cubic phases. The computed structure factor for water in the microemulsion phase shows a variety of trends in qualitative accord with experiments.

Item Type:	Journal Article
Publication:	Physicl Review Letters
Publisher:	American Physical Society
Additional Information:	Copyright for this article belongs to American Physical Society (APS)
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	01 Sep 2004
Last Modified:	19 Sep 2010 04:14
URI:	http://eprints.iisc.ac.in/id/eprint/1074

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