Screen printed thick film reference electrodes for electrochemical sensing

Manjakkal, L. , Vilouras, A. and Dahiya, R. (2018) Screen printed thick film reference electrodes for electrochemical sensing. IEEE Sensors Journal, 18(19), pp. 7779-7785. (doi: 10.1109/JSEN.2018.2840349)

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This paper presents printed thick film Ag|AgCl|KCl reference electrodes (RE) for electrochemical sensors. The screen-printed REs with 10- μm thick glass-KCl salt matrix layer exhibit a stable potential of 5 mV. Cyclic voltammetric analysis shows that the anodic and cathodic peak current of the RE increases with the scan rate in the range of 25–150 mVs −1 . The analytical performance of the REs shows a stable open circuit potential for the NaCl concentrations in the range of 30–100 mM. Testing the presented REs for electrochemical pH sensor application (with RuO 2 -based sensitive electrode) the sensitivity of 55 mV/pH was noted in the pH range of 4.5–9. Evaluating the effect of temperature on the performance of REs, a potential variation of −3.8 mV/ °C was observed. Finally, a LabVIEW interface was developed to store, analyze, and calculate the sensitivity of the sensor under different temperature conditions. The LabVIEW interface can also be used to calculate the pH-value/temperature of unknown solutions under known temperature/pH conditions.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Manjakkal, Dr Libu and Vilouras, Anastasios and Dahiya, Professor Ravinder
Authors: Manjakkal, L., Vilouras, A., and Dahiya, R.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:IEEE Sensors Journal
ISSN (Online):1558-1748
Published Online:28 May 2018
Copyright Holders:Copyright © 2018 The Authors
First Published:First published in IEEE Sensors Journal 18(19): 7779-7785
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
663861Engineering Fellowships for Growth: Printed Tactile SKINRavinder DahiyaEngineering and Physical Sciences Research Council (EPSRC)EP/M002527/1ENG - ENGINEERING ELECTRONICS & NANO ENG
636381EPSRC Centre for Doctoral Training in Sensing and MeasurementAndrew HarveyEngineering and Physical Sciences Research Council (EPSRC)EP/L016753/1SCHOOL OF PHYSICS & ASTRONOMY