Oner, Hasbi;
Ghoreishizadeh, Sara S;
(2025)
Comparative Study of Planar Ag/AgCl Quasi-Reference Electrodes Developed on PCB.
In:
Proceedings of the 2025 IEEE Sensors Applications Symposium (SAS).
IEEE: Newcastle, UK.
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Abstract
This paper presents a comparative study of different fabrication methods for planar Ag/AgCl quasi-reference electrodes (RE) on a printed circuit board (PCB) aimed at integration into portable electrochemical biosensors. Three fabrication techniques based on electroplating and screen printing are studied, along with two chlorination methods to convert the electroplated silver layers into silver chloride layers. The comprehensive characterisation of the three REs demonstrates the stability of the electrodes compared to those of commercially available planar reference electrodes. A drift rate as low as 2.2 mV/day is observed over 7 days for electrodes developed through Ag electroplating and chlorination with NaOCl, making these REs suitable for continuous biosensing applications.
| Type: | Proceedings paper |
|---|---|
| Title: | Comparative Study of Planar Ag/AgCl Quasi-Reference Electrodes Developed on PCB |
| Event: | 2025 IEEE Sensors Applications Symposium (SAS) |
| Dates: | 8 Jul 2025 - 10 Jul 2025 |
| ISBN-13: | 979-8-3315-1193-7 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/sas65169.2025.11105182 |
| Publisher version: | https://doi.org/10.1109/sas65169.2025.11105182 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | electrochemical biosensors, Ag/AgCl quasi-reference electrode, PCB, electrodeposition |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10213561 |
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