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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/6827/1/19_Teng_Yong_Tan.pdf
http://journalarticle.ukm.my/6827/
http://www.ukm.my/jsm/
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spelling my-ukm.journal.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/
institution Universiti Kebangsaan Malaysia
building Perpustakaan Tun Sri Lanang Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
url_provider http://journalarticle.ukm.my/
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/6827/1/19_Teng_Yong_Tan.pdf
http://journalarticle.ukm.my/6827/
http://www.ukm.my/jsm/
_version_ 1643736908060164096
score 13.211869

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