Volume 88, Number 4, November 2009
|Number of page(s)||6|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||02 December 2009|
Experimental study of prewetting transitions by systematic variation of the surface field at nematic liquid crystal/water interfaces
Max Planck Institute for Dynamics and Self-Organization - Bunsenstr. 10, D-37073 Göttingen, Germany, EU
Corresponding author: email@example.com
Accepted: 6 November 2009
An ellipsometric study of the interface between a nematic liquid crystal and water in the presence of a nonionic surfactant is presented. The surfactant induces a nematic wetting layer at temperatures above the bulk nematic-isotropic transition and the surfactant concentration serves as a handle to tune the strength of the ordering surface field. At low surfactant concentrations, a discontinuous jump in the thickness of the nematic wetting layer is observed at a temperature a few tenth of one centigrade above the bulk nematic-isotropic transition. With increasing surfactant concentration, this prewetting transition is driven towards a critical point.
PACS: 61.30.-v – Liquid crystals / 61.30.Hn – Surface phenomena: alignment, anchoring, anchoring transitions, surface-induced layering, surface-induced ordering, wetting, prewetting transitions, and wetting transitions / 68.05.Cf – Liquid-liquid interface structure: measurements and simulations
© EPLA, 2009
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.