Direction of flexoelectric polarization in smectic *CG phases of chiral smectic liquid crystals

Polarization in antiferroelectric liquid crystals has two origins: The piezoelectric polarization which is of chiral origin and the flexoelectric polarization which originates in different orientation of tilts in neighboring layers. The flexoelectric polarization is perpendicular to the tilt directi...

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Main Authors:	Teng, Yong Tan, Lye, Hock Ong
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2014
Online Access:	http://journalarticle.ukm.my/6827/ http://journalarticle.ukm.my/6827/ http://journalarticle.ukm.my/6827/1/19_Teng_Yong_Tan.pdf

id	ukm-6827
recordtype	eprints
spelling	ukm-68272016-12-14T06:42:18Z http://journalarticle.ukm.my/6827/ Direction of flexoelectric polarization in smectic CG phases of chiral smectic liquid crystals Teng, Yong Tan Lye, Hock Ong Polarization in antiferroelectric liquid crystals has two origins: The piezoelectric polarization which is of chiral origin and the flexoelectric polarization which originates in different orientation of tilts in neighboring layers. The flexoelectric polarization is perpendicular to the tilt direction only if the structure is uniformly helicoidally modulated. In structures like and the flexoelectric contribution might be significant and it can be non-parallel to the piezoelectric component. Hence it may deviates the direction of polarization from the perpendicular direction significantly. The angle formed by the polarization and the tilt is therefore general and as such the basic characteristic of the Sm phase can be recognized. It seems that this aspect was completely overlooked in the past. In this contribution we analyze the dependence of the polarization direction on the phase structures and on the values of piezoelectric and flexoelectric coefficients in the discrete phenomenological model. Universiti Kebangsaan Malaysia 2014-01 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/6827/1/19_Teng_Yong_Tan.pdf Teng, Yong Tan and Lye, Hock Ong (2014) Direction of flexoelectric polarization in smectic CG phases of chiral smectic liquid crystals. Sains Malaysiana, 43 (1). pp. 145-150. ISSN 0126-6039 http://www.ukm.my/jsm/
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	Polarization in antiferroelectric liquid crystals has two origins: The piezoelectric polarization which is of chiral origin and the flexoelectric polarization which originates in different orientation of tilts in neighboring layers. The flexoelectric polarization is perpendicular to the tilt direction only if the structure is uniformly helicoidally modulated. In structures like and the flexoelectric contribution might be significant and it can be non-parallel to the piezoelectric component. Hence it may deviates the direction of polarization from the perpendicular direction significantly. The angle formed by the polarization and the tilt is therefore general and as such the basic characteristic of the Sm phase can be recognized. It seems that this aspect was completely overlooked in the past. In this contribution we analyze the dependence of the polarization direction on the phase structures and on the values of piezoelectric and flexoelectric coefficients in the discrete phenomenological model.
format	Article
author	Teng, Yong Tan Lye, Hock Ong
spellingShingle	Teng, Yong Tan Lye, Hock Ong Direction of flexoelectric polarization in smectic *CG phases of chiral smectic liquid crystals
author_facet	Teng, Yong Tan Lye, Hock Ong
author_sort	Teng, Yong Tan
title	Direction of flexoelectric polarization in smectic *CG phases of chiral smectic liquid crystals
title_short	Direction of flexoelectric polarization in smectic *CG phases of chiral smectic liquid crystals
title_full	Direction of flexoelectric polarization in smectic *CG phases of chiral smectic liquid crystals
title_fullStr	Direction of flexoelectric polarization in smectic *CG phases of chiral smectic liquid crystals
title_full_unstemmed	Direction of flexoelectric polarization in smectic *CG phases of chiral smectic liquid crystals
title_sort	direction of flexoelectric polarization in smectic *cg phases of chiral smectic liquid crystals
publisher	Universiti Kebangsaan Malaysia
publishDate	2014
url	http://journalarticle.ukm.my/6827/ http://journalarticle.ukm.my/6827/ http://journalarticle.ukm.my/6827/1/19_Teng_Yong_Tan.pdf
first_indexed	2023-09-18T19:48:00Z
last_indexed	2023-09-18T19:48:00Z
_version_	1777406029580992512

Direction of flexoelectric polarization in smectic *CG phases of chiral smectic liquid crystals

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