Direct observation of the orientational fluctuations in a nematic liquid crystal with a high-speed camera

Citation
H. Orihara et al., Direct observation of the orientational fluctuations in a nematic liquid crystal with a high-speed camera, MOLEC CRYST, 366, 2001, pp. 1995-2001
Citations number
7
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Volume
366
Year of publication
2001
Pages
1995 - 2001
Database
ISI
SICI code
Abstract
The orientational fluctuations in a homogeneously aligned nematic liquid cr ystal were successfully observed with a high-speed video camera. From the s eries of images obtained, first the spatial Fourier transformation of each image was computed and then the time correlation function at each wave numb er was calculated. A theory to analyse the results was developed and by usi ng it the ratios of the elastic constant to the viscosity were obtained.