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Publicação
Real-time measurement of refractive index using 3D-printed optofluidic fiber sensor
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Orientador(es)
Resumo(s)
<jats:p>This work describes a 3D-printed optofluidic fiber sensor to measure refractive index in real time, combining a microfluidic system with an optical fiber extrinsic Fabry–Perot interferometer. The microfluidic chip platform was developed for this purpose through 3D printing. The Fabry–Perot cavity was incorporated in the microfluidic chip perpendicularly to the sample flow, which was of approximately 3.7 µL/s. The optofluidic fiber sensor platform coupled with a low-cost optical power meter detector was characterized using different concentrations of glucose solutions. In the linear regression analysis, the optical power shift was correlated with the refractive index and a sensitivity of −86.6 dB/RIU (r2 = 0.996) was obtained. Good results were obtained in terms of stability with a maximum standard deviation of 0.03 dB and a sensor resolution of 5.2 × 10−4 RIU. The feasibility of the optofluidic fiber sensor for dynamic analyses of refractive index with low sample usage was confirmed through real-time measurements.</jats:p>
Descrição
Palavras-chave
Optofluidics Fabry–Perot Refractive index Real-time measurement . Faculdade de Ciências Exatas e da Engenharia
Contexto Educativo
Citação
Leça, J.M.; Magalhães, Y.; Antunes, P.; Pereira, V.; Ferreira, M.S. Real-Time Measurement of Refractive Index Using 3D-Printed Optofluidic Fiber Sensor. Sensors 2022, 22, 9377. https://doi.org/10.3390/s22239377
Editora
MDPI