9-13 July 2012
Africa/Johannesburg timezone
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Nonlinear Optical Properties of Natural Dyes

Presented by Sidiki ZONGO, Maaza MALIK on 12 Jul 2012 from 17:30 to 19:30
Type: Poster Presentation
Session: Poster Session
Track: Track A - Division for Condensed Matter Physics and Materials

Abstract

We report on optical properties of natural dyes extracted from plant materials such as beetroot, mimosa and flame flowers. Natural dyes have been known historically for their applications in food and textile industries. However, more attention is being paid to these materials as they exhibit a large π-electron conjugated systems, which could be a source of strong nonlinearity of optical properties required for photonic and optical switching devices. Therefore, optical measurements of samples have been carried out using the UV-visible, FTIR and optical limiting techniques by femtosecond laser. The characterization of the dyes have shown common functional groups but at different amount for their molecular structure. On the other hand, the results have indicated a possible applications of these materials as optical limiters used for photosensitive devices and eyes protection.

Award

Yes

Level

MSc

Supervisor

Malik Maaza

Paper

yes

Place

Location: IT Building
Room:


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