DETECTION OF PHASE-TRANSITIONS IN LIQUID-CRYSTALS USING THE MIRAGE EFFECT

Authors
RAJASREE K VIDYALAL V RADHAKRISHNAN P NAMPOORI VPN VALLABHAN CPG GEORGE AK
Citation
K. Rajasree et al., DETECTION OF PHASE-TRANSITIONS IN LIQUID-CRYSTALS USING THE MIRAGE EFFECT, Liquid crystals, 18(1), 1995, pp. 167-169
Citations number
12
Categorie Soggetti
Crystallography
Journal title
Liquid crystals → ACNP
ISSN journal
02678292
Volume
18
Issue
1
Year of publication
1995
Pages
167 - 169
Database
ISI
SICI code
0267-8292(1995)18:1<167:DOPILU>2.0.ZU;2-J
Abstract
We describe here a novel technique which makes use of the photothermal mirage effect to study phase transition in liquid crystals. Results o f the measurements done with two nematic liquid crystals are given to illustrate this technique. We observe an enhancement in the signal amp litude during phase change which is due to the large magnitude of the refractive index gradient developing at the transition temperature.