Mottram, Nigel J. and Beccherelli, Romeo and Elston, Steve J. (1999) The pre-transitional effect in antiferroelectric liquid crystals: a comparison between theory and experiment. Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 328. pp. 65-73. ISSN 1058-725X
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Abstract
We have investigated, experimentally and theoretically, the low field (pre-transitional) behaviour of an AFLC material. By measuring the light transmission through a device between crossed polarizers, as a function of both orientation and applied voltage, we determine the vari- ation of both the effective optic axis tilt angle I$ and the optical anisotropy An as a function of voltage. In order to model this hebaviour we use an order parameter theory based on changes to the distribution of molecules within the AFLC layers rather than the soji mode description. With this model we have been able to describe the observed tilt and anisotropy behaviour.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Antiferroelectric; pre-transitional effect; optical anisotropy; order parameter theory |
| 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 15:49 |
| Last Modified: | 08 Mar 2013 15:49 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/4530 |
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