ANISOTROPIC INTERACTIONS BETWEEN MBBA AND SURFACE-TREATED SUBSTRATES
Open Access
- 1 April 1979
- journal article
- Published by EDP Sciences in Le Journal de Physique Colloques
- Vol. 40 (C3) , C3-514
- https://doi.org/10.1051/jphyscol:19793103
Abstract
Easy axis Θ and anchoring strength coefficient Bθ were measured on the interfaces between MBBA and substrates with various surfactants layers, by using wall effects on the Freedericksz transition. Experimental results indicate that steric, dispersive and polar interactions play individual roles in the molecular orienting forces of surface-treated substrates. Bθ values were found to be rather small. MBBA surface tension anisotropy was estimated to be of the order of 10-2 dyn/cmKeywords
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