Title :
WKB method in the problem of thermal fluctuations in anisotropic media with one-dimensional periodicity
Author :
Aksenova, Elena V. ; Romanov, Vadim P. ; Val´kov, Alexei Yu
Author_Institution :
Dept. of Phys., St. Petersburg State Univ., Russia
Abstract :
The director fluctuations in cholesteric liquid crystals, representing anisotropic media with one-dimensional periodicity, are investigated. The cholesterics with large pitch are considered. For the analysis of the fluctuations spectrum the WKB method is applied. The solution near turn points where the WKB method is not valid is also considered. The results obtained are used for the construction of the director fluctuations correlation function
Keywords :
anisotropic media; cholesteric liquid crystals; electromagnetic wave diffraction; electromagnetic wave scattering; matrix algebra; thermal analysis; 1D periodicity; EM wave diffraction; EM wave scattering; WKB method; anisotropic media; cholesteric liquid crystals; correlation function; director fluctuations; fluctuations spectrum analysis; large pitch; matrices; one-dimensional periodicity; short-wave fluctuating modes; thermal fluctuations; turn points; Anisotropic magnetoresistance; Diffraction; Equations; Fluctuations; Fourier transforms; Liquid crystals; Mathematics; Physics; Scattering parameters; Tin;
Conference_Titel :
Day on Diffraction 2001. Proceedings. International Seminar
Conference_Location :
St.Petersburg
Print_ISBN :
5-7997-0366-9
DOI :
10.1109/DD.2001.988449
