Smectic layering at the free surface of isotropic liquid crystals in the pre-smectic temperature region characterized by ellipsometry

Christ Glorieux, Peter De Schrijver, Patrick M. Johnson, Oana Balus, Constantin Serban, Cheng Cher Huang, Jan Thoen

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations

Abstract

We have recorded the angular dependence of the ellipsometric signal of bulkisotropic dodecylcyanobiphenyl (12CB) as a function of temperature in the pre-smectic temperature region. Using a simple model, the order parameter of the discontinuously growing smectic surface layer has been determined approaching the isotropic-smectic phase transition temperature. Also the pretransitional isotropic region of the isotropic-smectic transition of the liquid crystal compound 2-(4-(1,1-dihydro-2-(2-perfluorobutoxy)perfluoroethoxy) phenyl-5-octyl pyrimidine (H8F(4,2,1)MOPP) has been investigated.

Original languageEnglish (US)
Pages (from-to)663-670
Number of pages8
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume329
DOIs
StatePublished - 1999
EventProceedings of the 1998 17th International Liquid Crystal Conference - Strasbourg, France
Duration: Jul 19 1998Jul 24 1998

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