Effects of pulsed electric fields on a nematic device with a ferroelectric ceramic substrate

  • S. S. Roy
  • , H. F. Gleeson
  • , R. W. Whatmore
  • , C. P. Shaw
  • , Q. Zhang

Research output: Other outputpeer-review

Abstract

We report details of the interaction between a thin film of ferroelectric ceramic (lead zirconate-lead titanate) and an overlying layer of nematic liquid crystal. Pulsed electric fields of 1ms duration and of varying amplitudes and polarity have been used to achieve different degrees of poling within devices in which one substrate includes the ferroelectric ceramic layer. The degree of orientation of the nematic liquid crystal is found to depend on both the amplitude and polarity of the poling voltage employed. The magnitude of the poling voltage necessary to induce reorientation in the liquid crystal compares reasonably with the calculated value. The reorientation of the nematic liquid crystal due to the interaction with poled grains of PZT is stable for at least several months.

Original languageEnglish
Number of pages7
Volume368
DOIs
Publication statusPublished - 2001

Publication series

NameMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
PublisherTaylor and Francis Ltd.
ISSN (Print)1058-725X

Keywords

  • Local Freederickz transition
  • Nematic
  • Surface interactions

Fingerprint

Dive into the research topics of 'Effects of pulsed electric fields on a nematic device with a ferroelectric ceramic substrate'. Together they form a unique fingerprint.

Cite this