Orientational Behaviour of the Guest-Host Systems in the Smectic A and Nematic Phases

• Authors: D. Bauman , H. Moryson , E. Wolarz
• Languages of publication: EN

Abstracts

EN

The measurements of the polarized absorption and fluorescence components spectra for the guest-host mixtures have been used to study the long orientational order in the uniaxial phases of the liquid crystal. The temperature dependence of the order parameters, ⟨P_{2}⟩ and ⟨P_{4}⟩, has been investigated and the molecular distribution function has been determined. On the basis of the ⟨P_{2}⟩ and ⟨P_{4}⟩, values some conclusions about the molecular orientation in the smectic A and nematic phases of the liquid crystalline samples have been drawn. It has been also found that the fluorescence spectroscopy is a sensitive method for determination of the phase transition temperatures of the liquid crystal doped with the fluorescent dye.

Keywords

EN

61.30.Gd; 64.70.Ew

Discipline

• 61.30.Gd: Orientational order of liquid crystals; electric and magnetic field effects on order

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1992
• Volume: 81
• Issue: 4-5
• Pages: 559-570

Dates

published

1992-04

received

1991-12-03

Contributors

author

D. Bauman

• Institute of Physics, Technical University, Piotrowo 3, 60-965 Poznań, Poland

author

H. Moryson

• Institute of Physics, Technical University, Piotrowo 3, 60-965 Poznań, Poland

author

E. Wolarz

• Institute of Physics, Technical University, Piotrowo 3, 60-965 Poznań, Poland

Identifiers

DOI

10.12693/APhysPolA.81.559