Surface and electrical characterization of Ag/AgCL pseudo-reference electrodes manufactured with commercially available PCB technologies

Despina Moschou*, Tatiana Trantidou, Anna Regoutz, Daniela Carta, Hywel Morgan, Themistoklis Prodromakis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

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.

Original languageEnglish
Pages (from-to)18102-18113
Number of pages12
JournalSensors (Switzerland)
Volume15
Issue number8
DOIs
Publication statusPublished - 24 Jul 2015

Keywords / Materials (for Non-textual outputs)

  • Ag/AgCl
  • Biosensing
  • Integrated reference electrode
  • Lab-on-Chip
  • Lab-on-PCB
  • PCB technology

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