• 文献标题:   Electro-optical, dielectric and optical properties of graphene oxide dispersed nematic liquid crystal composites
  • 文献类型:   Article
  • 作  者:   YADAV S, MALIK P, KHUSHBOO, JAYOTI D
  • 作者关键词:   nematic liquid crystal, graphene oxide, birefringence, phase transition, threshold voltage
  • 出版物名称:   LIQUID CRYSTALS
  • ISSN:   0267-8292 EI 1366-5855
  • 通讯作者地址:   Dr BR Ambedkar Natl Inst Technol
  • 被引频次:   4
  • DOI:   10.1080/02678292.2019.1695969 EA DEC 2019
  • 出版年:   2020

▎ 摘  要

Graphene oxide (GO) in various concentrations (0.04 wt.%, 0.1 wt.% and 0.3 wt.%) was dispersed into nematic liquid crystal (LC) 5CB and studied for electro-optical, dielectric and optical responses. The textural and phase transition studies were investigated by optical polarising microscopy in the nematic phase. The effect of GO concentration on the micro-texture, phase transition temperatures, birefringence, threshold voltage, contrast ratio, dielectric permittivity, dielectric loss and conductivity was also investigated. The nematic-isotropic transition temperature slight increases (3%) in the 0.04 wt.% and 0.1 wt.% GO dispersed 5CB composites as compared to 5CB. Threshold voltage decreases in the GO-5CB composites with the increase of GO concentration. Additionally, the effect of GO concentration on the optical absorbance of UV-visible light and energy bandgap is also considered. [GRAPHICS]