DocumentCode :
1507255
Title :
Dynamics and Electrooptics of Vertically Aligned Nematics With Induced Pretilt on 
Author :
Otón, Eva ; López-Andrés, Sol ; Carrasco-Vela, Carlos ; Cerrolaza, Beatriz ; Bennis, Noureddine ; Otón, José Manuel
Author_Institution :
Dept. de Tecnol. Fotonica, Univ. Politec. de Madrid, Madrid, Spain
Volume :
6
Issue :
7
fYear :
2010
fDate :
7/1/2010 12:00:00 AM
Firstpage :
263
Lastpage :
268
Abstract :
The response time and contrast of vertically-aligned negative nematics depend critically on the aligning surface and its induced pretilt. Pretilt can be tuned up using obliquely evaporated inorganic oxides as alignment surface. A thorough study of pretilt angles induced by aligning surfaces of thermally evaporated SiO¿ has been carried out on several commercial and experimental negative nematic mixtures. Morphology of SiO¿ with different evaporation angles has been studied by Field Emission Scanning Electron Microscopy. Some morphological variations appear at specific evaporation angles. These are related to the pretilt induced by the surface and to the dynamic response of the device.
Keywords :
electro-optical effects; evaporation; nematic liquid crystals; scanning electron microscopy; surface morphology; electrooptics; evaporation angles; field-emission scanning electron microscopy; induced pretilt; morphology; pretilt angles; thermal evaporation; vertically aligned nematics; Crystalline materials; Delay; Electron emission; Liquid crystal displays; Liquid crystals; Optical polarization; Scanning electron microscopy; Surface morphology; Surface structures; Switches; ${hbox{SiO}}_{x}$
fLanguage :
English
Journal_Title :
Display Technology, Journal of
Publisher :
ieee
ISSN :
1551-319X
Type :
jour
DOI :
10.1109/JDT.2010.2049730
Filename :
5475386
Link To Document :
