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Article
Asymmetric Freedericksz Transitions from Symmetric Liquid Crystal Cells Doped with Harvested Ferroelectric Nanoparticles
Optics Express
  • Gary Cook, Air Force Research Laboratory
  • Victor Yu. Reshetnyak, University of Kyiv
  • Ron F. Ziolo, Centro de Investigación en Química Aplicada
  • S. A. Basun, Air Force Research Laboratory
  • Partha P. Banerjee, University of Dayton
  • Dean R. Evans, Air Force Research Laboratory
Document Type
Article
Publication Date
8-1-2010
Abstract
The electrical Freedericksz transition characteristics of planar aligned liquid crystal cells doped with harvested single ferroelectric domain 9 nm nanoparticles of BaTiO3 have been measured. We demonstrate for the first time that the electrical pre-history of the cells imparts significant polarity sensitivity to the Freedericksz characteristics. The presence of harvested single domain ferroelectric nanoparticles enables cells to be programmably semi-permanently polarized. This reduces or increases the Freedericksz transition threshold by 0.8 V, depending on the polarity of the applied voltage, giving a net 1.6 V Freedericksz threshold asymmetry for 8 μm thick cells filled with TL205 liquid crystal.
Inclusive pages
17339-17345
ISBN/ISSN
1094-4087
Comments

Permission documentation is on file.

Publisher
Optical Society of America
Peer Reviewed
Yes
Citation Information
Gary Cook, Victor Yu. Reshetnyak, Ron F. Ziolo, S. A. Basun, et al.. "Asymmetric Freedericksz Transitions from Symmetric Liquid Crystal Cells Doped with Harvested Ferroelectric Nanoparticles" Optics Express Vol. 18 Iss. 16 (2010)
Available at: http://works.bepress.com/partha_banerjee/32/