PHOTOMECHANICALLY INDUCED PHASE-TRANSITIONS IN FERROELECTRIC LIQUID-CRYSTALS

Authors
COLES HJ WALTON HG GUILLON D POETTI G
Citation
Hj. Coles et al., PHOTOMECHANICALLY INDUCED PHASE-TRANSITIONS IN FERROELECTRIC LIQUID-CRYSTALS, Liquid crystals, 15(4), 1993, pp. 551-558
Citations number
15
Categorie Soggetti
Crystallography
Journal title
Liquid crystals → ACNP
ISSN journal
02678292
Volume
15
Issue
4
Year of publication
1993
Pages
551 - 558
Database
ISI
SICI code
0267-8292(1993)15:4<551:PIPIFL>2.0.ZU;2-W
Abstract
We demonstrate that the addition of small amounts of a novel azo-dye t o a ferroelectric liquid crystal and illumination with low intensity ( approximately 0.8 mW cm-2) UV light can result in reversible, isotherm al phase transitions and dramatic changes in the properties of the sys tem. In particular we examine light induced transitions between the S( I) and S(C)* phases and the consequent photomechanical regulation of spontaneous polarization.