Photo-controlled Conformation-assisted Permanent Optical Storage Device Employing a Polymer Network Liquid Crystal

A new type of optical storage device is described employing a material consisting of a host nematic liquid crystal, a photoisomerisable azobenzene component and a photopolymerizable monomer. The principle of image storing involves selectively controlling the birefringence of the medium immediately p...

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Main Authors:	Hegde, Gurumurthy, Jayalakshmi, Vallamkondu, Naira, Geetha Gopinathan, Prasad, Subbarao Krishna
Format:	Article
Language:	English
Published:	Royal Society of Chemistry 2009
Subjects:	QC Physics
Online Access:	http://umpir.ump.edu.my/id/eprint/5435/ http://umpir.ump.edu.my/id/eprint/5435/ http://umpir.ump.edu.my/id/eprint/5435/ http://umpir.ump.edu.my/id/eprint/5435/1/PCCP.pdf

id	ump-5435
recordtype	eprints
spelling	ump-54352018-05-18T00:06:23Z http://umpir.ump.edu.my/id/eprint/5435/ Photo-controlled Conformation-assisted Permanent Optical Storage Device Employing a Polymer Network Liquid Crystal Hegde, Gurumurthy Jayalakshmi, Vallamkondu Naira, Geetha Gopinathan Prasad, Subbarao Krishna QC Physics A new type of optical storage device is described employing a material consisting of a host nematic liquid crystal, a photoisomerisable azobenzene component and a photopolymerizable monomer. The principle of image storing involves selectively controlling the birefringence of the medium immediately prior to photopolymerization of the monomer. We show that photoisomerisation driven nematic to isotropic transition can be employed to achieve this through proper timing of the reverse isomerization of the azobenzene compound before the nematic director fluctuations get quenched. It is also suggested that grey-shades can be created in this device using the recently discovered phenomenon of electric-field acceleration of reverse isomerisation. Royal Society of Chemistry 2009-05-28 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/5435/1/PCCP.pdf Hegde, Gurumurthy and Jayalakshmi, Vallamkondu and Naira, Geetha Gopinathan and Prasad, Subbarao Krishna (2009) Photo-controlled Conformation-assisted Permanent Optical Storage Device Employing a Polymer Network Liquid Crystal. Physical Chemistry Chemical Physics, 11 (30). pp. 6450-6454. ISSN 1463-9076 (print); 1463-9084 (online) http://dx.doi.org/10.1039/B906004A DOI: 10.1039/B906004A
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 Jayalakshmi, Vallamkondu Naira, Geetha Gopinathan Prasad, Subbarao Krishna Photo-controlled Conformation-assisted Permanent Optical Storage Device Employing a Polymer Network Liquid Crystal
description	A new type of optical storage device is described employing a material consisting of a host nematic liquid crystal, a photoisomerisable azobenzene component and a photopolymerizable monomer. The principle of image storing involves selectively controlling the birefringence of the medium immediately prior to photopolymerization of the monomer. We show that photoisomerisation driven nematic to isotropic transition can be employed to achieve this through proper timing of the reverse isomerization of the azobenzene compound before the nematic director fluctuations get quenched. It is also suggested that grey-shades can be created in this device using the recently discovered phenomenon of electric-field acceleration of reverse isomerisation.
format	Article
author	Hegde, Gurumurthy Jayalakshmi, Vallamkondu Naira, Geetha Gopinathan Prasad, Subbarao Krishna
author_facet	Hegde, Gurumurthy Jayalakshmi, Vallamkondu Naira, Geetha Gopinathan Prasad, Subbarao Krishna
author_sort	Hegde, Gurumurthy
title	Photo-controlled Conformation-assisted Permanent Optical Storage Device Employing a Polymer Network Liquid Crystal
title_short	Photo-controlled Conformation-assisted Permanent Optical Storage Device Employing a Polymer Network Liquid Crystal
title_full	Photo-controlled Conformation-assisted Permanent Optical Storage Device Employing a Polymer Network Liquid Crystal
title_fullStr	Photo-controlled Conformation-assisted Permanent Optical Storage Device Employing a Polymer Network Liquid Crystal
title_full_unstemmed	Photo-controlled Conformation-assisted Permanent Optical Storage Device Employing a Polymer Network Liquid Crystal
title_sort	photo-controlled conformation-assisted permanent optical storage device employing a polymer network liquid crystal
publisher	Royal Society of Chemistry
publishDate	2009
url	http://umpir.ump.edu.my/id/eprint/5435/ http://umpir.ump.edu.my/id/eprint/5435/ http://umpir.ump.edu.my/id/eprint/5435/ http://umpir.ump.edu.my/id/eprint/5435/1/PCCP.pdf
first_indexed	2023-09-18T22:00:46Z
last_indexed	2023-09-18T22:00:46Z
_version_	1777414382381170688

Photo-controlled Conformation-assisted Permanent Optical Storage Device Employing a Polymer Network Liquid Crystal

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