Light-control of Liquid Crystal Alignment from Vertical to Planar

Light-control of Liquid Crystal Alignment from Vertical to Planar

Continuous or discontinuous transition from vertical to planar alignment was found in nematic cells,containing polyimide alignment layer exposed to linear polarized UV light, depending on whether the alignment layer was mechanically rubbed or not prior the illumination. The polyimide material is des...

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Main Authors: Hegde, Gurumurthy, Ata Alla, Rasha, Komitov, Lachezar
Format: Article
Language:English
Published: AIP Publishing LLC. 2013
Subjects:
QC Physics
Online Access:http://umpir.ump.edu.my/id/eprint/5467/
http://umpir.ump.edu.my/id/eprint/5467/
http://umpir.ump.edu.my/id/eprint/5467/
http://umpir.ump.edu.my/id/eprint/5467/1/vertical_to_planar.pdf
id ump-5467
recordtype eprints
spelling ump-54672018-05-17T07:11:27Z http://umpir.ump.edu.my/id/eprint/5467/ Light-control of Liquid Crystal Alignment from Vertical to Planar Hegde, Gurumurthy Ata Alla, Rasha Komitov, Lachezar QC Physics Continuous or discontinuous transition from vertical to planar alignment was found in nematic cells,containing polyimide alignment layer exposed to linear polarized UV light, depending on whether the alignment layer was mechanically rubbed or not prior the illumination. The polyimide material is designed originally to promote vertical alignment when deposited onto the inner cell substrates’ surface. The mechanism behind these observations is complicated. It includes inclination of the alkyl side chains of the polyimide alignment layer towards the rubbing direction and the bond breaking process due to UV illumination which are considered as the key factors for occurrence of such alignment transition. AIP Publishing LLC. 2013-06-12 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/5467/1/vertical_to_planar.pdf Hegde, Gurumurthy and Ata Alla, Rasha and Komitov, Lachezar (2013) Light-control of Liquid Crystal Alignment from Vertical to Planar. Applied Physics Letters, 102 (23). pp. 233505-1. ISSN 0003-6951 (print); 1077-3118 (online) http://dx.doi.org/10.1063/1.4808383 DOI: 10.1063/1.4808383
repository_type Digital Repository
institution_category Local University
institution Universiti Malaysia Pahang
building UMP Institutional Repository
collection Online Access
language English
topic QC Physics
spellingShingle QC Physics
Hegde, Gurumurthy
Ata Alla, Rasha
Komitov, Lachezar
Light-control of Liquid Crystal Alignment from Vertical to Planar
description Continuous or discontinuous transition from vertical to planar alignment was found in nematic cells,containing polyimide alignment layer exposed to linear polarized UV light, depending on whether the alignment layer was mechanically rubbed or not prior the illumination. The polyimide material is designed originally to promote vertical alignment when deposited onto the inner cell substrates’ surface. The mechanism behind these observations is complicated. It includes inclination of the alkyl side chains of the polyimide alignment layer towards the rubbing direction and the bond breaking process due to UV illumination which are considered as the key factors for occurrence of such alignment transition.
format Article
author Hegde, Gurumurthy
Ata Alla, Rasha
Komitov, Lachezar
author_facet Hegde, Gurumurthy
Ata Alla, Rasha
Komitov, Lachezar
author_sort Hegde, Gurumurthy
title Light-control of Liquid Crystal Alignment from Vertical to Planar
title_short Light-control of Liquid Crystal Alignment from Vertical to Planar
title_full Light-control of Liquid Crystal Alignment from Vertical to Planar
title_fullStr Light-control of Liquid Crystal Alignment from Vertical to Planar
title_full_unstemmed Light-control of Liquid Crystal Alignment from Vertical to Planar
title_sort light-control of liquid crystal alignment from vertical to planar
publisher AIP Publishing LLC.
publishDate 2013
url http://umpir.ump.edu.my/id/eprint/5467/
http://umpir.ump.edu.my/id/eprint/5467/
http://umpir.ump.edu.my/id/eprint/5467/
http://umpir.ump.edu.my/id/eprint/5467/1/vertical_to_planar.pdf
first_indexed 2023-09-18T22:00:47Z
last_indexed 2023-09-18T22:00:47Z
_version_ 1777414384389193728

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