E-Textiles Conference 2024 • 2024

Nonenzymatic Yarn Sensor for Glucose Monitoring

Sheng Yong (Centre for Flexible Electronics and E-Textiles, Electronics and Computer Science, University of Southampton, Southampton, United Kingdom), Shunqing Yang (Centre for Flexible Electronics and E-Textiles, Electronics and Computer Science, University of Southampton, Southampton, United Kingdom), Jidong Liu (Centre for Flexible Electronics and E-Textiles, Electronics and Computer Science, University of Southampton, Southampton, United Kingdom), Hassan Hamidi (Tyndall National Institute, University College Cork, Cork, Ireland), Daniela Iacopino (Tyndall National Institute, University College Cork, Cork, Ireland), Stephen Beeby (Centre for Flexible Electronics and E-Textiles, Electronics and Computer Science, University of Southampton, Southampton, United Kingdom)

Yarn sensorglucose detectioncarbon coating

Highlights

  • Flexible nonenzymatic glucose sensor built entirely from functional copper yarn electrodes
  • Working electrode: copper oxide plus activated carbon-coated copper yarn; reference and counter: carbon-coated copper yarn
  • Solution-processed coatings applied via syringe with tapered nozzles; low-temperature curing
  • Demonstrated glucose sensitivity of 247.6 µA mM-1 cm-2 over 0.1–8 mM in 1× PBS
  • Three-yarn configuration produced comparable CV/CA performance to standard Pt/Ag/AgCl setups
  • Design suitable for integration into textiles for wearable glucose monitoring

Abstract

This paper reports the design, fabrication and characterization of a flexible yarn-based nonenzymatic glucose sensor with three-electrode test configuration. The proposed sensor was implemented with three pieces of functional yarn as working, reference and counter electrode. The WE was a copper oxide and activated carbon-coated copper yarn, the RE and CE were glassy carbon-coated copper yarn. The proposed nonenzymatic glucose sensor achieved a sensitivity of 247.6 µA mM-1 cm-2 for glucose concentrations between 0.1 mM and 8 mM.

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Citation

Yong, S., Yang, S., Liu, J., Hamidi, H., Iacopino, D., and Beeby, S. Nonenzymatic Yarn Sensor for Glucose Monitoring. E-Textiles Conference 2024, 2024.

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