New Faceting Phenomena in Lyotropic Liquid Crystals

In lyotropic systems, four different isotropic phases may coexist with several cubic phases having different topologies and/or symmetries. We review here faceting phenomena, rising new conceptual issues, that have been recently found to occur at different cubic/isotropic interfaces: 1°- depending on...

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Bibliographic Details
Published in:Molecular crystals and liquid crystals (Philadelphia, Pa. : 2003) Pa. : 2003), 2005-06, Vol.434 (1), p.235/[563]-249/[577]
Main Authors: Pieranski, P., Even, C., Rohe, D., Sittler, L., Bouchih, M., Ginestet, N., Popa-Nita, S., Plötzing, T., Grenier, J.
Format: Article
Language:English
Subjects:
crystal shapes
lyotropic cubic phases
surface melting
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Summary:In lyotropic systems, four different isotropic phases may coexist with several cubic phases having different topologies and/or symmetries. We review here faceting phenomena, rising new conceptual issues, that have been recently found to occur at different cubic/isotropic interfaces: 1°- depending on their tension, these interfaces can be either rich or poor in facets or even completely rough, 2°- when facets coexist with rough surfaces, facets can grow due to the redistribution of the surfactant in the crystal, 3°- upon a temperature cycling, ratchet-like growth of facets, until an elimination of rough surfaces takes place, 4°- asymmetric crystal shapes are induced by temperature gradients, 5°-rough surfaces "melt" prior to facets that stay "dry".
ISSN:1542-1406
1563-5287
DOI:10.1080/15421400590956252