dc.contributor.author | Kumar, Rahul | |
dc.contributor.author | Nguyen, Hien | |
dc.contributor.author | Rente, Bruno | |
dc.contributor.author | Tan, Christabel | |
dc.contributor.author | Sun, Tong | |
dc.contributor.author | Grattan, Kenneth T. V. | |
dc.date.accessioned | 2022-08-03T08:45:03Z | |
dc.date.available | 2022-08-03T08:45:03Z | |
dc.date.issued | 2022-07-30 | |
dc.identifier.citation | Kumar , R , Nguyen , H , Rente , B , Tan , C , Sun , T & Grattan , K T V 2022 , ' A Portable ‘Plug-and-Play’ Fibre Optic Sensor for In-Situ Measurements of pH Values for Microfluidic Applications ' , Micromachines , vol. 13 , no. 8 , e1224 . https://doi.org/10.3390/mi13081224 | |
dc.identifier.issn | 2072-666X | |
dc.identifier.other | Jisc: 497877 | |
dc.identifier.uri | http://hdl.handle.net/2299/25680 | |
dc.description | © 2022 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 (https://creativecommons.org/licenses/by/4.0/) | |
dc.description.abstract | Microfluidics is used in many applications ranging from chemistry, medicine, biology and biomedical research, and the ability to measure pH values in-situ is an important parameter for creating and monitoring environments within a microfluidic chip for many such applications. We present a portable, optical fibre-based sensor for monitoring the pH based on the fluorescent intensity change of an acrylamidofluorescein dye, immobilized on the tip of a multimode optical fibre, and its performance is evaluated in-situ in a microfluidic channel. The sensor showed a sigmoid response over the pH range of 6.0−8.5, with a maximum sensitivity of 0.2/pH in the mid-range at pH 7.5. Following its evaluation, the sensor developed was used in a single microfluidic PDMS channel and its response was monitored for various flow rates within the channel. The results thus obtained showed that the sensor is sufficiently robust and well-suited to be used for measuring the pH value of the flowing liquid in the microchannel, allowing it to be used for a number of practical applications in ‘lab-on-a-chip’ applications where microfluidics are used. A key feature of the sensor is its simplicity and the ease of integrating the sensor with the microfluidic channel being probed. | en |
dc.format.extent | 16 | |
dc.format.extent | 3031376 | |
dc.language.iso | eng | |
dc.relation.ispartof | Micromachines | |
dc.subject | microfluidics | |
dc.subject | pH sensor | |
dc.subject | optical fibre sensor | |
dc.subject | fluorescent sensor | |
dc.title | A Portable ‘Plug-and-Play’ Fibre Optic Sensor for In-Situ Measurements of pH Values for Microfluidic Applications | en |
dc.contributor.institution | Department of Engineering and Technology | |
dc.contributor.institution | School of Physics, Engineering & Computer Science | |
dc.contributor.institution | BioEngineering | |
dc.contributor.institution | Centre for Research in Biodetection Technologies | |
dc.contributor.institution | Micro Electro-Mechanical Systems | |
dc.contributor.institution | Centre for Hazard Detection and Protection Research | |
dc.contributor.institution | Microfluidics and Microengineering | |
dc.contributor.institution | Centre for Engineering Research | |
dc.contributor.institution | School of Computer Science | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.3390/mi13081224 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |