Document Detail


Morphology of open films of discotic hexagonal columnar liquid crystals as probed by grazing incidence X-ray diffraction.
MedLine Citation:
PMID:  20411293     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
The structure and the orientation of thermotropic hexagonal columnar liquid crystals are studied by grazing incidence X-ray diffraction (GIXD) for different discotic compounds in the geometry of open supported thin films. Whatever the film deposition mode (either spin-coating or vacuum evaporation) and the film thickness, a degenerate planar alignment with the liquid crystalline columns parallel to the substrate is found. However, if a specific thermal process is applied to the liquid crystal film, homeotropic anchoring (columns normal to the interface) can be stabilized in a metastable state.
Authors:
Eric Grelet; Sébastien Dardel; Harald Bock; Michel Goldmann; Emmanuelle Lacaze; Frédéric Nallet
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-04-10
Journal Detail:
Title:  The European physical journal. E, Soft matter     Volume:  31     ISSN:  1292-895X     ISO Abbreviation:  Eur Phys J E Soft Matter     Publication Date:  2010 Apr 
Date Detail:
Created Date:  2010-05-14     Completed Date:  2010-08-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101126530     Medline TA:  Eur Phys J E Soft Matter     Country:  France    
Other Details:
Languages:  eng     Pagination:  343-9     Citation Subset:  -    
Affiliation:
Centre de Recherche Paul-Pascal, CNRS -Université de Bordeaux, 115 Avenue Schweitzer, 33600, Pessac, France. grelet@crpp-bordeaux.cnrs.fr
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