A novel approach for the determination of birefringence dispersion in nematic liquid crystals by using the continuous wavelet transform


Koysal O., San S. E. , Ozder S., Ecevit F.

MEASUREMENT SCIENCE AND TECHNOLOGY, vol.14, no.6, pp.790-795, 2003 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 14 Issue: 6
  • Publication Date: 2003
  • Doi Number: 10.1088/0957-0233/14/6/312
  • Title of Journal : MEASUREMENT SCIENCE AND TECHNOLOGY
  • Page Numbers: pp.790-795

Abstract

Transmittance spectra of 5CB and ZLI-6000 coded nematic liquid crystals were acquired in the 12 600-22 200 cm(-1) region at room temperature. The continuous wavelet transform using the Morlet wavelet was applied to analyse the transmittance signal. Dispersion curves of the birefringence were obtained for 5CB and ZLI-6000 by this analysis and data were fitted to the Cauchy formula whereby the dispersion parameters were extracted. Results are found to be in favourable accordance with the published values.