ANCHORING ORIENTATION OF NEMATIC AND SMECTIC-A LIQUID-CRYSTALS ON PTFE TREATED PLATES

Authors
HUBERT P DREYFUS H GUILLON D GALERNE Y
Citation
P. Hubert et al., ANCHORING ORIENTATION OF NEMATIC AND SMECTIC-A LIQUID-CRYSTALS ON PTFE TREATED PLATES, Journal de physique. II, 5(9), 1995, pp. 1371-1383
Citations number
19
Categorie Soggetti
Physics, Atomic, Molecular & Chemical",Mechanics
Journal title
Journal de physique. II → ACNP
ISSN journal
11554312
Volume
5
Issue
9
Year of publication
1995
Pages
1371 - 1383
Database
ISI
SICI code
1155-4312(1995)5:9<1371:AOONAS>2.0.ZU;2-X
Abstract
The anchoring orientation of different liquid crystals in contact with poly(tetrafluoroethylene) (PTFE) treated surfaces is determined by me ans of optical interferometry. The anchoring is found to be planar for all the compounds tested, MBBA, 2OO6, 5CB and 7BPI, consisting of pol ar and non-polar molecules, in the nematic or smectic A phase. This re sult is consistent with the non-polar nature of PTFE, which is only se nsitive to London-like interactions.