Electrical characteristics of liquid crystal cell 5CB with addition of cobalt ferrite nanoparticles (CoFe$_2$O$_4$)

A. A. Tyagunov^ab, Ya. V. Barnash^abc, N. V. Kamanina<sup>abc

a</sup> Saint Petersburg Electrotechnical University "LETI"
^b S. I. Vavilov State Optical Institute, Saint Petersburg
^c The Petersburg Nuclear Physics Institute, The National Research Center "Kurchatov Institute"

Abstract: The effect of CoFe$_2$O$_4$ 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), CoFe$_2$O$_4$ nanoparticles.

Received: 22.11.2024
Revised: 30.01.2025
Accepted: 03.02.2025

DOI: 10.61011/PJTF.2025.10.60329.20195

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