Dielectric Anisotropy Properties of BAC-Doped 5CB Liquid Crystal


Ozdemir Z. , Canli N. , Okutan M. , Eran B. B.

Molecular Crystals and Liquid Crystals, vol.616, no.1, pp.102-111, 2015 (Journal Indexed in SCI Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 616 Issue: 1
  • Publication Date: 2015
  • Doi Number: 10.1080/15421406.2014.990283
  • Title of Journal : Molecular Crystals and Liquid Crystals
  • Page Numbers: pp.102-111
  • Keywords: 4-[4-(S)-2-Methylbutoxybenzoyloxy]benzoic liquid crystal acid, 5CB liquid crystal, dielectric anisotropy, splay elastic constant

Abstract

Copyright © Taylor & Francis Group, LLC 2015.Dielectric anisotropy properties and splay elastic constant, K11 for 5CB (4-cyano-4′-pentylbiphenyl) plus 1% BAC(4-[4-(S)-2-methylbutoxybenzoyloxy]benzoic acid] have been investigated. The frequency dependent dielectric anisotropy and splay elastic constant have been calculated by using capacitance-voltage curves for various frequencies. The critical frequency, fc values of dielectric anisotropy for 4-cyano-4′-pentylbiphenyl (5CB) and 5CB+(1%)BAC composites were found to be 433.5 kHz and 439.5 kHz, respectively. It has been determined that BAC doping to 5CB decreases both threshold voltages and splay elastic constants for all frequencies applied. The decrease in K11 values has been interpreted as the decrease of distortion in the system.