Volume 59, Number 3, August 2002
|Page(s)||410 - 416|
|Section||Condensed matter: structure, mechanical and thermal properties|
|Published online||01 September 2002|
Anchoring and orientational wetting of nematic liquid crystals on semi-fluorinated self-assembled monolayer surfaces
Centre for Self-Organising Molecular Systems,
University of Leeds Leeds, LS2 9JT, UK
2 Base Technology Research Centre, Seiko-Epson Co - Nagano-ken, Japan
3 University of Twente, MESA Research Institute and Faculty of Chemical Technology, MTP - P.O. Box 217, 7500 AE Enschede, The Netherlands
4 Department of Chemistry, University of Houston Houston, TX, 77204-5641, USA
Corresponding author: firstname.lastname@example.org
Accepted: 14 May 2002
We demonstrate that it is possible to achieve exceptionally fine control over the anchoring of liquid crystals via the use of semi-fluorinated self-assembled monolayers of varying spacer length. We use this approach to map the detailed shape of an anchoring transition surface in thermodynamic phase space and to explore the links between anchoring and orientational wetting phenomena. These results allow one to design a substrate that will place a standard liquid-crystal film arbitrarily close to an anchoring transition between homeotropic and planar anchoring.
PACS: 64.70.Md – Transitions in liquid crystals / 68.35.Rh – Phase transitions and critical phenomena / 68.08.-p – Liquid-solid interfaces
© EDP Sciences, 2002
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