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Equilibrium onions?

By L. Ramos, D. Roux, P.D. Olmsted and M.E. Cates

Abstract

We demonstrate the possibility of a stable equilibrium multi-lamellar ("onion") phase in pure lamellar systems (no excess solvent) due to a sufficiently negative Gaussian curvature modulus. The onion phase is stabilized by non-linear elastic moduli coupled to a polydisperse size distribution (Apollonian packing) to allow space-filling without appreciable elastic distortion. This model is compared to experiments on copolymer-decorated lamellar surfactant systems, with reasonable qualitative agreement

Publisher: EDP Sciences
Year: 2004
OAI identifier: oai:eprints.whiterose.ac.uk:1955

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