Electro-Optical Properties of Liquid Crystals Composite with Zinc Oxide Nanoparticles
H. Eskalena, Ş. Özğan b, Ü. Alver c and S. Kerlı d
aMaterial Science and Engineering Program, Graduate School of Natural and Applied Science, Kahramanmaras Sutcu Imam University, Kahramanmaras, Turkey
bDepartment of Physics, Kahramanmaras Sutcu Imam University (KSU), Kahramanmaras, Turkey
cDepartment of Metallurgical and Materials Engineering, Karadeniz Technical University, Trabzon, Turkey
dDepartment of Energy Systems Engineering, Faculty of Elbistan Technology, KSU, Kahramanmaras, Turkey
Received: May 1, 2013; In final form: October 13, 2014
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In this study, zinc oxide (ZnO) nanoparticles were synthesized by spray pyrolysis method. The properties of ZnO nanoparticles are determined by means of scanning electron microscope (SEM), X-ray diffraction (XRD) and UV-vis spectroscopy. Nematic liquid crystal mixture E7 was doped with 1, 2, and 4% ZnO. We investigate electrical and optical parameters of pure and doped nematic liquid crystal mixture E7. The experiments related to voltage dependence and light transmittance of the pure and doped E7 were carried out. The values of threshold voltage, total phase retardation and birefringence are examined. The results show that doping zinc oxide nanoparticles into liquid crystal mixture E7 decreases threshold voltage significantly.

DOI: 10.12693/APhysPolA.127.756
PACS numbers: 78.20.Jq, 77.84.Nh, 78.20.Fm