Kinetics of nematic to isotropic phase transition in liquid crystal doped with magnetic nanoparticles

K. Csach, A. Juríková, J. Miškuf, N. Tomašovicová, V. Gdovinová, V. Závišová, P. Kopcanský, N. Éber, K. Fodor-Csorba, A. Vajda

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Abstract

A binary mixture of bent-core and rod-shaped liquid crystals was chosen as a model substance combining the properties of both types of liquid crystals. The mixture was doped with a small amount of spherical and rod-like magnetic nanoparticles. Differential scanning calorimetry experiments were performed for the pure as well as for the doped mixture at different heating rates ranging from 1 to 16°C/min. The addition of the magnetic nanoparticles lowered the phase transition temperature. This effect is more intensive in the case of the rod-like magnetic nanoparticles. The kinetics of the nematic to isotropic phase transition was evaluated in the framework of the differential isoconversional method. The calculated apparent activation energy showed non-monotonic behaviour and a sensitivity on the shape of added magnetic nanoparticles.

Original languageEnglish
Pages (from-to)949-951
Number of pages3
JournalActa Physica Polonica A
Volume131
Issue number4
DOIs
Publication statusPublished - Apr 1 2017

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liquid crystals
nanoparticles
rods
kinetics
binary mixtures
heat measurement
transition temperature
activation energy
heating
scanning
sensitivity

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Csach, K., Juríková, A., Miškuf, J., Tomašovicová, N., Gdovinová, V., Závišová, V., ... Vajda, A. (2017). Kinetics of nematic to isotropic phase transition in liquid crystal doped with magnetic nanoparticles. Acta Physica Polonica A, 131(4), 949-951. https://doi.org/10.12693/APhysPolA.131.949

Kinetics of nematic to isotropic phase transition in liquid crystal doped with magnetic nanoparticles. / Csach, K.; Juríková, A.; Miškuf, J.; Tomašovicová, N.; Gdovinová, V.; Závišová, V.; Kopcanský, P.; Éber, N.; Fodor-Csorba, K.; Vajda, A.

In: Acta Physica Polonica A, Vol. 131, No. 4, 01.04.2017, p. 949-951.

Research output: Contribution to journalArticle

Csach, K, Juríková, A, Miškuf, J, Tomašovicová, N, Gdovinová, V, Závišová, V, Kopcanský, P, Éber, N, Fodor-Csorba, K & Vajda, A 2017, 'Kinetics of nematic to isotropic phase transition in liquid crystal doped with magnetic nanoparticles', Acta Physica Polonica A, vol. 131, no. 4, pp. 949-951. https://doi.org/10.12693/APhysPolA.131.949
Csach K, Juríková A, Miškuf J, Tomašovicová N, Gdovinová V, Závišová V et al. Kinetics of nematic to isotropic phase transition in liquid crystal doped with magnetic nanoparticles. Acta Physica Polonica A. 2017 Apr 1;131(4):949-951. https://doi.org/10.12693/APhysPolA.131.949
Csach, K. ; Juríková, A. ; Miškuf, J. ; Tomašovicová, N. ; Gdovinová, V. ; Závišová, V. ; Kopcanský, P. ; Éber, N. ; Fodor-Csorba, K. ; Vajda, A. / Kinetics of nematic to isotropic phase transition in liquid crystal doped with magnetic nanoparticles. In: Acta Physica Polonica A. 2017 ; Vol. 131, No. 4. pp. 949-951.
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