Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/35896
Title: | Real-Time Measurement of Refractive Index Using 3D-Printed Optofluidic Fiber Sensor |
Author: | Leça, João M. Magalhães, Yannis Antunes, Paulo Pereira, Vanda Ferreira, Marta S. |
Keywords: | Optofluidics Refractometry Optical Fibers |
Issue Date: | 1-Dec-2022 |
Publisher: | MDPI |
Abstract: | 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. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/35896 |
DOI: | 10.3390/s22239377 |
ISSN: | 1424-3210 |
Appears in Collections: | DFis - Artigos I3N-FSCOSD - Artigos |
Files in This Item:
File | Description | Size | Format | |
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2022_LECA_Real time measurement of RI using 3D-printed optofluidic fiber sensor.pdf | 2.16 MB | Adobe PDF | View/Open |
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