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
1St. Petersburg State Electrotechnical University “LETI", St. Petersburg, Russia
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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