Temperature-dependent optical properties of some mixtures nematic liquid crystal

Zhila Alipanah; Mohammad Sadegh Zakerhamidi; Amid Ranjkesh

doi:10.1038/s41598-022-16750-x

Temperature-dependent optical properties of some mixtures nematic liquid crystal

Sci Rep. 2022 Jul 25;12(1):12676. doi: 10.1038/s41598-022-16750-x.

Authors

Zhila Alipanah¹, Mohammad Sadegh Zakerhamidi^{2

3}, Amid Ranjkesh⁴

Affiliations

¹ Faculty of Physics, University of Tabriz, Tabriz, Iran. zh.alipanah@tabrizu.ac.ir.
² Faculty of Physics, University of Tabriz, Tabriz, Iran.
³ Photonics Center of Excellence, University of Tabriz, Tabriz, Iran.
⁴ Condensed Matter Department, J. Stefan Institute, Jamova 39, Ljubljana, Slovenia.

Abstract

The presence of optical anisotropy in liquid crystals (LCs) has caused these materials to have dual refractive indices: ordinary (n_o) and extra-ordinary (n_e). Many fundamental information about LCs can be found by looking at these refractive indices. In this work, the refractive indices of four mixtures nematic liquid crystal (NLC) have been studied as a function of temperature, and the relevant functions were then calculated. Subsequently, the order parameter of mentioned LCs was determined using three methods: Vuks, Haller, and the effective geometry parameter method. It was concluded that the obtained values are not significantly different and exhibit the same temperature dependence. The obtained results were evaluated in relation to the approach utilized.