Silver nanoparticles dispersed in nematic liquid crystal: an impact on dielectric and electro-optical parameters
محورهای موضوعی : Journal of Theoretical and Applied Physics
Rohit Katiyar
1
(Liquid Crystal Research Lab, Department of Physics, University of Lucknow)
Kaushlendra Agrahari
2
(Liquid Crystal Research Lab, Department of Physics, University of Lucknow)
Govind Pathak
3
(Centre for Nano and Soft Matter Sciences)
Tripti Vimal
4
(Liquid Crystal Research Lab, Department of Physics, University of Lucknow)
Geeta Yadav
5
(Liquid Crystal Research Lab, Department of Physics, University of Lucknow)
Kamal Kumar Pandey
6
(Department of Physics, Sri JNMPG College (K.K.C.))
Abhishek Kumar Misra
7
(Department of Physics, Govt. V.Y.T. P.G. Autonomous College)
Atul Srivastava
8
(Liquid Crystal Research Lab, Department of Physics, University of Lucknow)
Rajiv Manohar
9
(Liquid Crystal Research Lab, Department of Physics, University of Lucknow)
کلید واژه: Nematic liquid crystal, Silver Nanoparticles, Dielectric anisotropy, Threshold voltage,
چکیده مقاله :
AbstractIn the present study, nematic liquid crystal (NLC) 4′-(Octyloxy)-4-biphenylcarbonitrile dispersed with three different concentrations of silver nanoparticles (Ag NPs) is characterized by electro-optical and dielectric spectroscopy method. The dispersion of Ag NPs into NLC material leads to the change in physical parameters such as dielectric permittivity, photoluminescence, threshold voltage, response time and splay elastic constant. The AC conductivity and threshold voltage of Ag NPs-dispersed composite system have increased significantly. The increase in the AC conductivity for the composite system is attributed to the Ag NPs-assisted induced charge transfer mechanism in the system. Moreover, the increase in AC conductivity value for Ag NPs/NLC composite system discloses its importance in photovoltaic solar cell.
