| |
 |
UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-24 23:06 |
 |
|
|
|
Conference: Bucharest University Faculty of Physics 2006 Meeting
Section: Polymer Physics
Title:
Photopolarimetry in Orthoconic Ferroelectric and Antiferroelectric Liquid Crystals
Authors:
Adriana Andronie[1], Carlo Versace [2], Emil Barna [1]
Affiliation:
[1]Faculty of Physics, University of Bucharest, Romania
[2]Licryl-INFM, University of Calabria, Italy
E-mail
adriana.andronie@gmail.com
Keywords:
Stokes parameters, electro-optical behaviour, FDP, apparent tilt angle
Abstract:
The purpose of the experiment is the study of electro-optical properties of ferroelectric and antiferroelectric smectic liquid crystals. The method of analysis is the polarization of the transmitted light by a FDP (four-detector photopolarimeter), that allows the simultaneous measurement of the Stokes parameters. The material used is W129, an orthoconic smectic liquid crystal which presents both ferroelectric and antiferroelectric smectic C phases (X (13/15) SmCa* (102,3) SmA* (117/125.2) I – temperatures in Celsius degrees obtained from DSC measurements). As Stokes parameters contain the information on the electro-optical behaviour of the considered material, the apparent tilt angle can be evaluated.
|
|
|
|