학술논문
Plasmonic U-Shaped Optical Fiber Sensor for Glyphosate Detection in Water
Document Type
Conference
Source
2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Microwave and Optoelectronics Conference (IMOC), 2021 SBMO/IEEE MTT-S International. :1-3 Oct, 2021
Subject
Language
Abstract
We show the fabrication and characterization of a plasmonic plastic optical fiber sensor for detection of glyphosate in water. Cysteamine-encapsulated gold nanoparticles produced by the bottom-up method were deposited on the surface of a U-shaped fiber to improve the sensing performance. Within the range up to 50 μM, an average sensitivity of - 0.2 nm/μM for glyphosate detection in water was determined. This sensitivity relates to a 0.3 μM sensor resolution considering the interrogation system used, which is 10 times smaller than the Brazilian standard for glyphosate in drinking water.