PHOTOTHERMAL IMAGING AS A TOOL TO STUDY PHASE-TRANSITIONS IN BINARY-MIXTURES OF LIQUID-CRYSTALS

Authors
SAHRAOUI AH KOLINSKY C DELENCLOS S DAOUDI A BUISINE JM
Citation
Ah. Sahraoui et al., PHOTOTHERMAL IMAGING AS A TOOL TO STUDY PHASE-TRANSITIONS IN BINARY-MIXTURES OF LIQUID-CRYSTALS, Journal of applied physics, 82(12), 1997, pp. 6209-6214
Citations number
13
Journal title
Journal of applied physics → ACNP
ISSN journal
00218979
Volume
82
Issue
12
Year of publication
1997
Pages
6209 - 6214
Database
ISI
SICI code
0021-8979(1997)82:12<6209:PIAATT>2.0.ZU;2-A
Abstract
The photothermal beam deflection technique is used to study a binary m ixture of liquid crystals in a contact preparation. The photothermal s ignal is generated while scanning the contact preparation. The interph ase boundaries between crystal-smectic A and smectic A-nematic are det ected, and their displacement is monitored as a function of temperatur e. The theoretical analysis of the numerically simulated signal is pre sented. In particular the influence of the modulation frequency on the sensitivity in the detection of interphase boundaries is investigated . (C) 1997 American Institute of Physics.