Issue 30, 2009

Photo-controlled conformation-assisted permanent optical storage device employing a polymer network liquid crystal

Abstract

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.

Graphical abstract: Photo-controlled conformation-assisted permanent optical storage device employing a polymer network liquid crystal

Article information

Article type
Paper
Submitted
25 Mar 2009
Accepted
05 May 2009
First published
28 May 2009

Phys. Chem. Chem. Phys., 2009,11, 6450-6454

Photo-controlled conformation-assisted permanent optical storage device employing a polymer network liquid crystal

V. Jayalakshmi, G. Hegde, G. G. Nair and S. K. Prasad, Phys. Chem. Chem. Phys., 2009, 11, 6450 DOI: 10.1039/B906004A

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