X-ray reflectivity of classical smectic-A liquid crystals
- 1 January 1988
- journal article
- Published by EDP Sciences in Journal de Physique
- Vol. 49 (2) , 363-367
- https://doi.org/10.1051/jphys:01988004902036300
Abstract
Using X-ray reflectivity smectic layering is investigated on both sides of a classical monolayer smectic-A to nematic phase transition in a polar NCS substituted compound. At the surface, only monolayering is observed ; there is no breaking of up-down symmetry. This contrasts with the situation of a smectic-A1 phase in a polar CN substituted compound, where bilayering occurs at the surface. Consequences for molecular models of smectic-A phases are discussedKeywords
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