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Cross-diffusion-induced convective patterns in microemulsion systems

Budroni, Marcello Antonio and Lemaigre, L. and De Wit, Anne and Rossi, Federico (2015) Cross-diffusion-induced convective patterns in microemulsion systems. Physical Chemistry Chemical Physics, Vol. 17 (3), p. 1593-1600. ISSN 1463-9076. eISSN 1463-9084. Article.

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DOI: 10.1039/C4CP02196G

Abstract

Cross-diffusion phenomena are experimentally shown to be able to induce convective fingering around an initially stable stratification of two microemulsions with different compositions. Upon diffusion of a salt that entrains water and AOT micelles by cross-diffusion, the miscible interface deforms into fingers following the build-up of a non-monotonic density profile in the gravitational field. A diffusion model incorporating cross-diffusion effects provides an explanation for the mechanism of the buoyancy-driven hydrodynamic instability and for the properties of the convective fingers.

Item Type:Article
ID Code:10737
Status:Published
Refereed:Yes
Uncontrolled Keywords:Cross-diffusion phenomena, AOT micelles, microemulsion systems
Subjects:Area 03 - Scienze chimiche > CHIM/02 Chimica fisica
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Chimica e Farmacia
Publisher:Royal Society of Chemistry
ISSN:1463-9076
eISSN:1463-9084
Deposited On:02 Feb 2015 16:49

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