Magnetic Liquid Switching Using Rodlike Ferronematic 6CHBT Liquid Crystal Mixture Depending on the Diffraction Patterns

  • Rawa K. Ibrahim Materials Research Directorate, Ministry of Science and Technology, Baghdad, Iraq
  • Aseel I. Mahmood Materials Research Directorate, Ministry of Science and Technology, Baghdad, Iraq
  • Veronika Gdovinova Institute of Experimental Physics SAS, Watsonova 47, 040 01 KoÅ¡ice, Slovakia
  • Peter Kopcansky Institute of Experimental Physics SAS, Watsonova 47, 040 01 KoÅ¡ice, Slovakia
Keywords: Liquid Crystal, Ferronematic, Diffraction patterns, DC low magnetic field, Liquid magnetic switch

Abstract

Diffraction patterns formed by a ferronematic sample, which contains 4-(trans-4-n-hexylcyclohexyl)-isothiocyanatobenzene (6CHBT) liquid crystal doped with Fe3O4 rodlike magnetic nanoparticles, was studied. The studied mixture can be applicated as a liquid magnetic switch. The diffraction patterns were observed from the micro-lines scribed on the polymer layer, which was contained by the liquid crystal mixture cell, with dimensions of 4 nm for depth and 0.32 µm for width and 5000 line per 1 mm2 in the case of absence and presence of the DC magnetic field. From the experimental results, it was observed that the application of the magnetic field caused more than 17% expansion in the diffraction patterns area at the focused point, while the number of patterns was increased by 25%. This change in the diffraction area due to the application of a magnetic field gives the motive to sense the low DC magnetic field which could be useful in the application of liquid switching.

Published
2021-02-27
How to Cite
Ibrahim, R. K., Mahmood, A. I., Gdovinova, V., & Kopcansky, P. (2021). Magnetic Liquid Switching Using Rodlike Ferronematic 6CHBT Liquid Crystal Mixture Depending on the Diffraction Patterns. Iraqi Journal of Science, 62(2), 465-474. https://doi.org/10.24996/ijs.2021.62.2.12
Section
Physics