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). (Published)
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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.
| Item Type: | Article |
|---|---|
| Subjects: | Q Science > QC Physics |
| Faculty/Division: | Faculty of Industrial Sciences And Technology |
| Depositing User: | Dr. Gurumurthy Hegde |
| Date Deposited: | 30 Apr 2014 08:13 |
| Last Modified: | 18 May 2018 00:06 |
| URI: | http://umpir.ump.edu.my/id/eprint/5435 |
| Download Statistic: | View Download Statistics |
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