Morphology of open films of discotic hexagonal columnar liquid crystals as probed by grazing incidence X-ray diffraction.
Eur Phys J E Soft Matter
; 31(4): 343-9, 2010 Apr.
Article
em En
| MEDLINE
| ID: mdl-20411293
ABSTRACT
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.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Incidence_studies
/
Risk_factors_studies
Idioma:
En
Revista:
Eur Phys J E Soft Matter
Assunto da revista:
BIOFISICA
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
França