Electrical characteristics of liquid crystal cell 5CB with addition of cobalt ferrite nanoparticles (CoFe2O4)
Tyagunov A. A.1,2, Barnash Y. V.1,2,3, Kamanina N. V.1,2,3
1
2Vavilov State Optical Institute, St. Petersburg, Russia
3Konstantinov Petersburg Nuclear Physics Institute, National Research Center Kurchatov Institute, Gatchina, Russia
Email: 2001.Alexander.24@mail.ru
The effect of CoFe2O4 nanoparticles on the characteristics of a liquid crystal cell based on the nematic composition 4-Cyano-4'-pentylbiphenyl (5CB) under the influence of sinusoidal voltage of different frequencies and amplitudes was studied. At the control signal frequency of 500 kHz, a resonant increase in current with a subsequent decrease occurs in the electric circuit. This indicates the formation of a series oscillatory circuit. The quality factor of the system with nanoparticles does not depend on the amplitude of the controlled voltage. Liquid crystal cells with a constant quality factor can find application in a number of devices and technologies where stable electrical characteristics are required. Keywords: nematic liquid crystal cell (LC cell), CoFe2O4 nanoparticles.
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