ASYMMETRIC ELECTROOPTICAL SWITCHING OF A NEMATIC CELL CONTROLLED BY ACORONA-POLED FERROELECTRIC POLYMER LAYER

Citation
Lm. Blinov et al., ASYMMETRIC ELECTROOPTICAL SWITCHING OF A NEMATIC CELL CONTROLLED BY ACORONA-POLED FERROELECTRIC POLYMER LAYER, Applied physics letters, 72(25), 1998, pp. 3377-3379
Citations number
7
Categorie Soggetti
Physics, Applied
Journal title
ISSN journal
00036951
Volume
72
Issue
25
Year of publication
1998
Pages
3377 - 3379
Database
ISI
SICI code
0003-6951(1998)72:25<3377:AESOAN>2.0.ZU;2-9
Abstract
A polar asymmetry of electro-optical behavior has been studied for a l iquid-crystal cell, one electrode of which is covered by a thin film o f a ferroelectric polymer. A well-known copolymer PVF2-TrFE (70:30) pr eviously poled by a corona discharge has been used to modify the quadr atic electro-optical response of the nematic mixture in a hybrid cell. The voltage for the onset of switching becomes polarity dependent. A simple model of an internal electric field created by a poled ferroele ctric and built in the nematic layer is discussed, which is consistent with the sign and general features of the effect. (C) 1998 American I nstitute of Physics. [S0003-6951(98)03425-1].