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Proceedings Paper

Functionalization of a long period grating coated with gold nanoparticles for glyphosate detection
Author(s): Bárbara R. Heidemann; Júlia C. Pereira; Ismael Chiamenti; Marcela M. Oliveira; Marcia Muller; José L. Fabris
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Paper Abstract

This work describes a method for producing a nanostructured fiber optic device for sensing of pesticides in water environment. The device consists of a long period grating with a coating of gold nanoparticles functionalized with cysteamine. The LPG shows attenuation bands near the phase matching turning point at the visible spectral range. A bottom-up production route was used to deposit gold nanoparticles on the fiber surface. Sensitivity to the refractive index of the external medium was measured before and after the layer deposition. Cysteamine was used as a ligand for glyphosate present in water at a concentration of 100 μM.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103231Y (23 April 2017); doi: 10.1117/12.2262599
Show Author Affiliations
Bárbara R. Heidemann, Univ. Tecnológica Federal do Paraná (Brazil)
Júlia C. Pereira, Univ. Federal do Paraná (Brazil)
Ismael Chiamenti, Univ. Tecnológica Federal do Paraná (Brazil)
Marcela M. Oliveira, Univ. Tecnológica Federal do Paraná (Brazil)
Marcia Muller, Univ. Tecnológica Federal do Paraná (Brazil)
José L. Fabris, Univ. Tecnológica Federal do Paraná (Brazil)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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