Homogeneous and heterogeneous switching in antiferroelectric liquid crystals

Beccherelli, Romeo and Mottram, Nigel J. and Elston, Steve J. (2000) Homogeneous and heterogeneous switching in antiferroelectric liquid crystals. EPJ. Applied physics , 9 (3). pp. 247-252. ISSN 1286-0042

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Abstract

An experimental investigation of hysteretic switching in antiferroelectric liquid crystals has been carried out. It is shown that in switching from the antiferroelectric state to the ferroelectric state there exists both a heterogeneous process involving the growth of finger-like domains and a homogeneous process in which the whole cell uniformly switches. At high field slew rates the homogeneous process dominates. However, ferroelectric to antiferroelectric switching involves only a heterogeneous process. A simple analytic model is then used to describe the experimental results and thus understand the competition between homogeneous and heterogeneous switching.

Item Type: Article
Subjects: 600 Tecnologia - Scienze applicate > 620 Ingegneria e attivita' affini > 621 Fisica applicata; Ingegneria meccanica > 621.3 Ingegneria elettrotecnica; Illuminazione; Superconduttivita'; Ingegneria magnetica; Ottica applicata; Tecnologia parafotica; Elettronica; Ingegneria delle comunicazioni; Elaboratori
Depositing User: Chiara D'Arpa
Date Deposited: 08 Mar 2013 15:56
Last Modified: 08 Mar 2013 15:56
URI: http://eprints.bice.rm.cnr.it/id/eprint/4535

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