Ref HAL: hal-00122193_v1
Ref Arxiv: cond-mat/0407021
DOI: 10.1209/epl/i2003-10260-6
WoS: 000223065000018
Ref. & Cit.: NASA ADS
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22 Citations
Résumé:

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.