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, cilt.14, sa.6, ss.790-795, 2003 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 14 Sayı: 6
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1088/0957-0233/14/6/312
  • Dergi Adı: MEASUREMENT SCIENCE AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.790-795
  • Anahtar Kelimeler: wavelet transform, liquid crystal, birefringence dispersion, REFRACTIVE-INDEX, THICKNESS, GUIDE, FILMS
  • Kocaeli Üniversitesi Adresli: Evet

Özet

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.