Volume 57, Number 2, January 2002
|Page(s)||184 - 190|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||01 September 2002|
FTIR study of a chiral tilted SmA liquid crystalline phase
Advanced Materials Laboratory, Department of Electronic and Electrical Engineering
Trinity College, University of Dublin - Dublin 2, Ireland
2 School of Electronic & Communications Engineering, Dublin Institute of Technology Kevin street, Dublin 8, Ireland
Corresponding author: email@example.com
Accepted: 26 October 2001
In this paper we present the results of the polarized infrared spectroscopy as evidence for the existence of a chiral analogue of the SmA phase of the de Vries type. In this phase, the molecular director in the smectic layers is tilted with respect to the smectic layer normal. The dichroic ratio is found to increase when the voltage crosses a threshold, and reaches a saturation value where all the directors of different layers are interpreted to be aligned perpendicular to the direction of the electric field. The possible molecular structure of de Vries SmA* phase is discussed.
PACS: 42.70.Df – Liquid crystals / 61.30.Gd – Orientational order of liquid crystals; electric and magnetic field effects on order / 78.30.-j – Infrared and Raman spectra
© EDP Sciences, 2002
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