Electro-optic properties of nematic liquid crystal filled with monodispersed nonorganic nanoparticles

L. Dolgov; Oleg V. Yaroshchuk

doi:10.1117/12.545800

3 December 2003 Electro-optic properties of nematic liquid crystal filled with monodispersed non-organic nanoparticles

L. Dolgov, Oleg V. Yaroshchuk

Proceedings Volume 5257, Ninth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals; (2003) https://doi.org/10.1117/12.545800
Event: 2003 Chapter books, 2003, Bellingham, WA, United States

Abstract

The electro-optic properties of nematic liquid crystal (LC) E7 filled with non-organic monodispersed nanoparticles (MNP) are investigated. As filler we used spherical MNP of antimony pentoxide (Sb₂O₅) and silica (SiO₂) having similar size. We investigated both non-stabilized and polymer (P) stabilized LC-MNP suspensions. By variation of the component concentrations different system morphologies were obtained. It is show that insertion of MNP in LC leads to drastic increase of light scattering which can be effectively controlled by the electric field. We obtained moderate driving voltage, short response time and relatively high contrast in the samples with optimized concentration of MNP. The improved contrast and response time were also achieved in LC-P composites by doping them with MNP. In both polymer stabilized and non-stabilized composites the contrast was higher in case of Sb₂O₅ filler. It is show that particle material and geometrical size strongly influence electro-optic properties of composites. The concentration dependencies of LC-MNP-P composites can be explained assuming strong absorption of MNP by polymer during photo-induced phase separation.

Citation Download Citation

L. Dolgov and Oleg V. Yaroshchuk "Electro-optic properties of nematic liquid crystal filled with monodispersed non-organic nanoparticles", Proc. SPIE 5257, Ninth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals, (3 December 2003); https://doi.org/10.1117/12.545800

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available