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Open AccessArticle

Surface and Electrical Characterization of Ag/AgCl Pseudo-Reference Electrodes Manufactured with Commercially Available PCB Technologies

Nanoelectronics and Nanotechnology Research Group, Southampton Nanofabrication Centre, Electronics and Computer Science, University of Southampton, SO17 1BJ Southampton, UK
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Academic Editor: W. Rudolf Seitz
Sensors 2015, 15(8), 18102-18113; https://doi.org/10.3390/s150818102
Received: 12 June 2015 / Accepted: 22 June 2015 / Published: 24 July 2015
(This article belongs to the Section Chemical Sensors)
Lab-on-Chip is a technology that could potentially revolutionize medical Point-of-Care diagnostics. Considerable research effort is focused towards innovating production technologies that will make commercial upscaling financially viable. Printed circuit board manufacturing techniques offer several prospects in this field. Here, we present a novel approach to manufacturing Printed Circuit Board (PCB)-based Ag/AgCl reference electrodes, an essential component of biosensors. Our prototypes were characterized both structurally and electrically. Scanning Electron Microscopy (SEM) and X-Ray Photoelectron Spectroscopy (XPS) were employed to evaluate the electrode surface characteristics. Electrical characterization was performed to determine stability and pH dependency. Finally, we demonstrate utilization along with PCB pH sensors, as a step towards a fully integrated PCB platform, comparing performance with discrete commercial reference electrodes. View Full-Text
Keywords: integrated reference electrode; PCB technology; Ag/AgCl; biosensing; Lab-on-Chip; Lab-on-PCB integrated reference electrode; PCB technology; Ag/AgCl; biosensing; Lab-on-Chip; Lab-on-PCB
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Moschou, D.; Trantidou, T.; Regoutz, A.; Carta, D.; Morgan, H.; Prodromakis, T. Surface and Electrical Characterization of Ag/AgCl Pseudo-Reference Electrodes Manufactured with Commercially Available PCB Technologies. Sensors 2015, 15, 18102-18113.

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