Real-Time Measurement of Refractive Index Using 3D-Printed Optofluidic Fiber Sensor
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 wa...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-12-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/22/23/9377 |
| _version_ | 1797462116696850432 |
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| author | João M. Leça Yannis Magalhães Paulo Antunes Vanda Pereira Marta S. Ferreira |
| author_facet | João M. Leça Yannis Magalhães Paulo Antunes Vanda Pereira Marta S. Ferreira |
| author_sort | João M. Leça |
| collection | DOAJ |
| description | 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 (r<sup>2</sup> = 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<sup>−4</sup> RIU. The feasibility of the optofluidic fiber sensor for dynamic analyses of refractive index with low sample usage was confirmed through real-time measurements. |
| first_indexed | 2024-03-09T17:31:57Z |
| format | Article |
| id | doaj.art-6fc2a8708211430c892d41f0a69d36af |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T17:31:57Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-6fc2a8708211430c892d41f0a69d36af2023-11-24T12:13:24ZengMDPI AGSensors1424-82202022-12-012223937710.3390/s22239377Real-Time Measurement of Refractive Index Using 3D-Printed Optofluidic Fiber SensorJoão M. Leça0Yannis Magalhães1Paulo Antunes2Vanda Pereira3Marta S. Ferreira4i3N & Physics Department, University of Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugali3N & Physics Department, University of Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugali3N & Physics Department, University of Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugali3N & Physics Department, University of Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, Portugali3N & Physics Department, University of Aveiro, Campus Universitario de Santiago, 3810-193 Aveiro, PortugalThis 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 (r<sup>2</sup> = 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<sup>−4</sup> RIU. The feasibility of the optofluidic fiber sensor for dynamic analyses of refractive index with low sample usage was confirmed through real-time measurements.https://www.mdpi.com/1424-8220/22/23/9377optofluidicsFabry–Perotrefractive indexreal-time measurement |
| spellingShingle | João M. Leça Yannis Magalhães Paulo Antunes Vanda Pereira Marta S. Ferreira Real-Time Measurement of Refractive Index Using 3D-Printed Optofluidic Fiber Sensor Sensors optofluidics Fabry–Perot refractive index real-time measurement |
| title | Real-Time Measurement of Refractive Index Using 3D-Printed Optofluidic Fiber Sensor |
| title_full | Real-Time Measurement of Refractive Index Using 3D-Printed Optofluidic Fiber Sensor |
| title_fullStr | Real-Time Measurement of Refractive Index Using 3D-Printed Optofluidic Fiber Sensor |
| title_full_unstemmed | Real-Time Measurement of Refractive Index Using 3D-Printed Optofluidic Fiber Sensor |
| title_short | Real-Time Measurement of Refractive Index Using 3D-Printed Optofluidic Fiber Sensor |
| title_sort | real time measurement of refractive index using 3d printed optofluidic fiber sensor |
| topic | optofluidics Fabry–Perot refractive index real-time measurement |
| url | https://www.mdpi.com/1424-8220/22/23/9377 |
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