Silicon oxides as alignment surfaces for vertically-aligned nematics in photonic devices View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2014-06

AUTHORS

E. Oton, S. López-Andrés, N. Bennis, J. M. Otón, M. A. Geday

ABSTRACT

A comparative study on alignment performance and microstructure of inorganic layers used for liquid crystal cell conditioning has been carried out. The study has focused on two specific materials, SiOx and SiO2, deposited under different conditions. The purpose was to establish a relationship between layer microstructure and liquid crystal alignment. The surface morphology has been studied by FESEM and AFM. An analysis on liquid crystal alignment, pretilt angle, response time, contrast ratio and the conditions to develop backflow effect (significant rise time increase due to pure homeotropic alignment) on vertically-aligned nematic cells has been carried out. A technique to overcome the presence of backflow has been identified. The full comparative study of SiOx and SiO2 layer properties and their influence over liquid crystal alignment and electrooptic response is presented. More... »

PAGES

92-100

Identifiers

URI

http://scigraph.springernature.com/pub.10.2478/s11772-014-0182-2

DOI

http://dx.doi.org/10.2478/s11772-014-0182-2

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1053049931


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