USE OF MIRAGE EFFECT FOR THE DETECTION OF PHASE-TRANSITIONS IN LIQUID-CRYSTALS

Authors
RAJASREE K VIDYALAL V RADHAKRISHNAN P NAMPOORI VPN VALLABHAN CPG GEORGE AK
Citation
K. Rajasree et al., USE OF MIRAGE EFFECT FOR THE DETECTION OF PHASE-TRANSITIONS IN LIQUID-CRYSTALS, Materials letters, 36(1-4), 1998, pp. 76-80
Citations number
14
Categorie Soggetti
Material Science","Physics, Applied
Journal title
Materials letters → ACNP
ISSN journal
0167577X
Volume
36
Issue
1-4
Year of publication
1998
Pages
76 - 80
Database
ISI
SICI code
0167-577X(1998)36:1-4<76:UOMEFT>2.0.ZU;2-9
Abstract
The phenomenon of single beam mirage effect, otherwise known as photot hermal deflection (PTD) effect using a He-Ne laser beam has been emplo yed to detect phase transitions in some liquid crystals. It has been o bserved that anomalous changes in amplitude occur in the PTD signal le vel near the transition temperature. The experimental details and the results of measurements made in liquid crystals E-8, M-21 and M-24 are given in this paper. (C) 1998 Elsevier Science B.V. All rights reserv ed.