The University of Southampton
University of Southampton Institutional Repository

Dynamics and uniformity of reorientation in liquid crystal cells with PVK alignment layers

Dynamics and uniformity of reorientation in liquid crystal cells with PVK alignment layers
Dynamics and uniformity of reorientation in liquid crystal cells with PVK alignment layers
We present experimental results on dynamics of Freedericksz transition in liquid crystal cells with alignment layers made of poly(N-vinyl carbazole). DC electric field causes the build-up of, unusually strong, surface charge layers on a liquid crystal-polymer interface that screen liquid crystals from the external field. The process of surface charge build-up and discharge in illuminated areas takes place due to low dark conductivity and high photoconductivity of poly(N-vinyl carbazole), rather than due to its photorefractive nature. If the illuminating beam has a Gaussian profile, reorientation starts from a very small volume, with a clear disclination line in the reorientation spot.
1-10
Dyadyusha, A.
2d1d75d4-60f0-4437-8771-0d0b9a3c7931
Kaczmarek, M.
408ec59b-8dba-41c1-89d0-af846d1bf327
Slussarenko, S.S.
beb09ed1-58ca-4399-9d72-866311f80ef7
Dyadyusha, A.
2d1d75d4-60f0-4437-8771-0d0b9a3c7931
Kaczmarek, M.
408ec59b-8dba-41c1-89d0-af846d1bf327
Slussarenko, S.S.
beb09ed1-58ca-4399-9d72-866311f80ef7

Dyadyusha, A., Kaczmarek, M. and Slussarenko, S.S. (2003) Dynamics and uniformity of reorientation in liquid crystal cells with PVK alignment layers. electronic-Liquid Crystal Communications, 1-10.

Record type: Article

Abstract

We present experimental results on dynamics of Freedericksz transition in liquid crystal cells with alignment layers made of poly(N-vinyl carbazole). DC electric field causes the build-up of, unusually strong, surface charge layers on a liquid crystal-polymer interface that screen liquid crystals from the external field. The process of surface charge build-up and discharge in illuminated areas takes place due to low dark conductivity and high photoconductivity of poly(N-vinyl carbazole), rather than due to its photorefractive nature. If the illuminating beam has a Gaussian profile, reorientation starts from a very small volume, with a clear disclination line in the reorientation spot.

PDF
eLC03.pdf - Other
Download (240kB)

More information

Published date: 2003

Identifiers

Local EPrints ID: 15128
URI: https://eprints.soton.ac.uk/id/eprint/15128
PURE UUID: 9bc158f4-def1-40e9-a52b-51373ea167ff

Catalogue record

Date deposited: 16 Mar 2005
Last modified: 17 Jul 2017 16:51

Export record

Contributors

Author: A. Dyadyusha
Author: M. Kaczmarek
Author: S.S. Slussarenko

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×