Research Output
Graphene-Oxide and Hydrogel Coated FBG-Based pH Sensor for Biomedical Applications
  A hydrogel coated fibre grating-based pH sensor for biomedical applications has been realised, where Graphene Oxide (GO) had been used to enhance the bonding between the coating and the fibre. Two methods of deposition of GO were analysed i.e., evaporation and co-electroplating. The paper concludes that the system of GO evaporated on the fibre + the hydrogel has a sensitivity much higher, (6.1 ± 0.5) pm/pH, than the system of Cu and GO co-electroplated + the hydrogel, (1.9 ± 0.1) pm/pH, for a pH range between 2 to 10. The other conclusion is that the first system has a less coating bonding energy with the optical fibre whereas the second system has a stronger bonding energy, with better durability.

  • Type:

    Conference Paper

  • Date:

    03 December 2018

  • Publication Status:


  • DOI:


  • Cross Ref:


  • ISSN:


  • Library of Congress:

    TK Electrical engineering. Electronics Nuclear engineering

  • Dewey Decimal Classification:

    681 Precision instruments & other devices

  • Funders:

    Edinburgh Napier Funded


Binetti, L., Stankiewicz, A., & Alwis, L. S. M. (2018). Graphene-Oxide and Hydrogel Coated FBG-Based pH Sensor for Biomedical Applications. Proceedings, 2(13), 789.



graphene oxide; fibre optic; pH; sensing; FBG; roughness; surface functionalisation; wettability; GO; biomedical application

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