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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Royal Society of Chemistry
2009
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| Online Access: | http://umpir.ump.edu.my/id/eprint/5435/1/PCCP.pdf |
| _version_ | 1796989961374793728 |
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| 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 |
| collection | UMP |
| 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. |
| first_indexed | 2024-03-06T11:44:46Z |
| format | Article |
| id | UMPir5435 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T11:44:46Z |
| publishDate | 2009 |
| publisher | Royal Society of Chemistry |
| record_format | dspace |
| spelling | UMPir54352018-05-18T00:06:23Z 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). (Published) http://dx.doi.org/10.1039/B906004A DOI: 10.1039/B906004A |
| 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 |
| title | 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_short | 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 |
| topic | QC Physics |
| url | http://umpir.ump.edu.my/id/eprint/5435/1/PCCP.pdf |
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