Swelling kinetics of the onion phase

Details Swelling kinetics of the onion phase Swelling kinetics of the onion phase

2000-09-01

arxiv.org/abs/cond-mat/0009017v1

Eur. Phys. J. E 4, 223 (2001)

Physics

Condensed Matter

Soft Condensed Matter

13 pages, 10 PS figures, LaTeX using SVJour, submitted to Eur Phys J E

Scientific paper

10.1007/s101890170132

A theory is presented for the behavior of an array of multi-lamellar vesicles (the onion phase) upon addition of solvent. A unique feature of this system is the possibility to sustain pressure gradients by tension in the lamellae. Tension enables the onions to remain stable beyond the unbinding point of a flat lamellar stack. The model accounts for various concentration profiles and interfaces developing in the onion as it swells. In particular, densely packed `onion cores' are shown to appear, as observed in experiments. The formation of interfaces and onion cores may represent an unusual example of stabilization of curved interfaces in confined geometry.

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