23 April 2017 Functionalization of a long period grating coated with gold nanoparticles for glyphosate detection
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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103231Y (2017) https://doi.org/10.1117/12.2262599
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
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.
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Bárbara R. Heidemann, Bárbara R. Heidemann, Júlia C. Pereira, Júlia C. Pereira, Ismael Chiamenti, Ismael Chiamenti, Marcela M. Oliveira, Marcela M. Oliveira, Marcia Muller, Marcia Muller, José L. Fabris, José L. Fabris, } "Functionalization of a long period grating coated with gold nanoparticles for glyphosate detection", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103231Y (23 April 2017); doi: 10.1117/12.2262599; https://doi.org/10.1117/12.2262599
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