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

被引：20

作者：

Köysal, O

San, SE

Özder, S

Ecevit, FN

机构：

[1] Gebze Inst Technol, Dept Phys, TR-41400 Gebze, Turkey

[2] UME, Natl Metrol Inst Turkey, TR-41470 Gebze, Turkey

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 2003年 / 14卷 / 06期

关键词：

wavelet transform; liquid crystal; birefringence dispersion;

D O I：

10.1088/0957-0233/14/6/312

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：790 / 795

页数：6

共 22 条

[1] Detection and location of defects in electronic devices by means of scanning ultrasonic microscopy and the wavelet transform [J].