Ferroelectric nanoparticles in low refractive index liquid crystals for strong electro-optic response
Author(s) -
Malgosia Kaczmarek,
Oleksandr Buchnev,
Iris Nandhakumar
Publication year - 2008
Publication title -
applied physics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 442
eISSN - 1077-3118
pISSN - 0003-6951
DOI - 10.1063/1.2884186
Subject(s) - birefringence , ferroelectricity , materials science , nanoparticle , refractive index , dielectric , liquid crystal , anisotropy , optics , optoelectronics , nanotechnology , physics
Functional materials based on ferroelectric, inorganic nanoparticles, and low refractive index nematic liquid crystals show strong induced birefringence and dielectric anisotropy. Birefringence can increase by a factor of 2 and dielectric anisotropy by a factor of 3 as compared with nominally pure liquid crystals. The enhancement of the electro-optic performance is higher in liquid crystals with Sn2P2S6 (SPS) nanoparticles than with BaTiO3 nanoparticles. The shape and size distribution of both types of ferroelectric particles were characterized using atomic force microscopy. The average size of SPS nanoparticles was 45nm and of BaTiO3 nanoparticles was 20nm.
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