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Publications (7/7 displayed)
- 2023NonInvasive Glucose Fiber Sensor Based on Self-Imaging Technique: Proof of Concept
- 2023Transmissive glucose concentration plasmonic Au sensor based on unclad optical fibercitations
- 2020New Material Conceptscitations
- 2020Embedded fiber sensors to monitor temperature and strain of polymeric parts fabricated by additive manufacturing and reinforced with NiTi wirescitations
- 2018Optical Fiber Tip Sensor for the Measurement of Glucose Aqueous Solutionscitations
- 2018Glucose measurements with optical fiber sensor based on coreless silica fiber
- 2018Determination of thermo-optic coefficient of ethanol-water mixtures with optical fiber tip sensorcitations
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document
Transmissive glucose concentration plasmonic Au sensor based on unclad optical fiber
Abstract
Using surface resonance (SPR) as a sensitivity enhancer, this work describes the development of a transmissive multimode optical fiber sensor with a gold (Au) thin film that measures glucose concentration. The fiber's cladding was initially removed, and an Au layer was then sputtered onto its surface to simultaneously excite SPR and reflect light, making the SPR sensor extremely sensitive to changes in the environment's refractive index. A range of glucose concentrations, from 0.0001 to 0.5000 g/ml, were tested on the sensor. A maximum sensitivity of 161.302 nm/(g/mL) was attained for the lowest glucose concentration, while the highest concentration yielded a sensitivity of 312.000 nm/(g/mL). The proposed sensor's compact size, high sensitivity, good stability and practicality make it a promising candidate for a range of applications, including detecting diabetes.