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Demonstration of a Low-Cost and Portable Optical Cavity-Based Sensor through Refractive Index Measurements
An optical cavity-based sensor using a differential detection method has been proposed for point-of-care diagnostics. We developed a low-cost and portable optical cavity-based sensor system using a 3D printer and off-the-shelf optical components. In this paper, we demonstrate the sensing capability...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6539703/ https://www.ncbi.nlm.nih.gov/pubmed/31083614 http://dx.doi.org/10.3390/s19092193 |
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author | Rho, Donggee Breaux, Caitlyn Kim, Seunghyun |
author_facet | Rho, Donggee Breaux, Caitlyn Kim, Seunghyun |
author_sort | Rho, Donggee |
collection | PubMed |
description | An optical cavity-based sensor using a differential detection method has been proposed for point-of-care diagnostics. We developed a low-cost and portable optical cavity-based sensor system using a 3D printer and off-the-shelf optical components. In this paper, we demonstrate the sensing capability of the portable system through refractive index measurements. Fabricated optical cavity samples were tested using the portable system and compared to simulation results. A referencing technique and digital low pass filtering were applied to reduce the noise of the portable system. The measurement results match the simulation results well and show the improved linearity and sensitivity by employing the differential detection method. The limit of detection achieved was 1.73 × 10(−5) Refractive Index Unit (RIU), which is comparable to other methods for refractive index sensing. |
format | Online Article Text |
id | pubmed-6539703 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-65397032019-06-04 Demonstration of a Low-Cost and Portable Optical Cavity-Based Sensor through Refractive Index Measurements Rho, Donggee Breaux, Caitlyn Kim, Seunghyun Sensors (Basel) Article An optical cavity-based sensor using a differential detection method has been proposed for point-of-care diagnostics. We developed a low-cost and portable optical cavity-based sensor system using a 3D printer and off-the-shelf optical components. In this paper, we demonstrate the sensing capability of the portable system through refractive index measurements. Fabricated optical cavity samples were tested using the portable system and compared to simulation results. A referencing technique and digital low pass filtering were applied to reduce the noise of the portable system. The measurement results match the simulation results well and show the improved linearity and sensitivity by employing the differential detection method. The limit of detection achieved was 1.73 × 10(−5) Refractive Index Unit (RIU), which is comparable to other methods for refractive index sensing. MDPI 2019-05-12 /pmc/articles/PMC6539703/ /pubmed/31083614 http://dx.doi.org/10.3390/s19092193 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Rho, Donggee Breaux, Caitlyn Kim, Seunghyun Demonstration of a Low-Cost and Portable Optical Cavity-Based Sensor through Refractive Index Measurements |
title | Demonstration of a Low-Cost and Portable Optical Cavity-Based Sensor through Refractive Index Measurements |
title_full | Demonstration of a Low-Cost and Portable Optical Cavity-Based Sensor through Refractive Index Measurements |
title_fullStr | Demonstration of a Low-Cost and Portable Optical Cavity-Based Sensor through Refractive Index Measurements |
title_full_unstemmed | Demonstration of a Low-Cost and Portable Optical Cavity-Based Sensor through Refractive Index Measurements |
title_short | Demonstration of a Low-Cost and Portable Optical Cavity-Based Sensor through Refractive Index Measurements |
title_sort | demonstration of a low-cost and portable optical cavity-based sensor through refractive index measurements |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6539703/ https://www.ncbi.nlm.nih.gov/pubmed/31083614 http://dx.doi.org/10.3390/s19092193 |
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