Electro-optical Kerr effect of 6CHBT liquid crystal doped with MgO nanoparticles in different concentration

被引：7
|
作者：
Pourmostafa, D. [1 ,2 ]
Tajalli, H. [1 ,2 ]
Vahedi, A. [1 ,2 ]
Milanchian, K. [3 ]
机构：
[1] Islamic Azad Univ, Tabriz Branch, Dept Phys, Tabriz, Iran
[2] Islamic Azad Univ, Tabriz Branch, Biophoton Res Ctr, Tabriz, Iran
[3] Payame Noor Univ, Dept Phys, POB 19395-3697, Tehran, Iran
来源：
OPTICAL MATERIALS | 2020年 / 107卷
关键词：
Liquid crystals; Nanoparticles; Electro-optic Kerr effect; Pre-transition behavior; NONLINEAR-OPTICAL-PROPERTIES; ISOTROPIC-PHASE; DEVICES;
D O I：
10.1016/j.optmat.2020.110061
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Kerr constant and pre-transition temperature of pure liquid crystal, 6CHBT, and doped with different concentrations of MgO nanoparticles were investigated at temperatures above the nematic-isotropic transition temperature by using the nulled intensity method. The MgO nanoparticles were added to liquid crystal at three different concentrations of 0.1, 0.3 and 0.6 (wt.). The results showed that the Kerr constant increase by adding nanoparticles mass percentages up to a certain concentration and then remains constant. The linear dependence of (T-T*) on the Kerr constant is found to be in good agreement with predictions of Landau-De Gennes model.
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页数：7
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