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Open AccessArticle

Multifunctional Flexible Sensor Based on Laser-Induced Graphene

1
DGUT-CNAM Institute, Dongguan University of Technology, Dongguan 523106, China
2
University of Rennes 1, UMR CNRS 6164, Institut d’Electronique et de Télécommunications of Rennes (IETR), F-35000 Rennes, France
3
School of Engineering, Macquarie University, Sydney, NSW 2109, Australia
4
Department of Astronomy and Physics, Macquarie University, Sydney, NSW 2109, Australia
*
Authors to whom correspondence should be addressed.
Sensors 2019, 19(16), 3477; https://doi.org/10.3390/s19163477
Received: 24 June 2019 / Revised: 24 July 2019 / Accepted: 7 August 2019 / Published: 9 August 2019
(This article belongs to the Special Issue Wearable Sensors and Systems in the IOT)
The paper presents the design and fabrication of a low-cost and easy-to-fabricate laser-induced graphene sensor together with its implementation for multi-sensing applications. Laser-irradiation of commercial polymer film was applied for photo-thermal generation of graphene. The graphene patterned in an interdigitated shape was transferred onto Kapton sticky tape to form the electrodes of a capacitive sensor. The functionality of the sensor was validated by employing them in electrochemical and strain-sensing scenarios. Impedance spectroscopy was applied to investigate the response of the sensor. For the electrochemical sensing, different concentrations of sodium sulfate were prepared, and the fabricated sensor was used to detect the concentration differences. For the strain sensing, the sensor was deployed for monitoring of human joint movements and tactile sensing. The promising sensing results validating the applicability of the fabricated sensor for multiple sensing purposes are presented. View Full-Text
Keywords: capacitive sensors; electrochemical sensing; flexible sensors; interdigital; laser-induced graphene; strain sensing; wearable sensors capacitive sensors; electrochemical sensing; flexible sensors; interdigital; laser-induced graphene; strain sensing; wearable sensors
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MDPI and ACS Style

Han, T.; Nag, A.; Simorangkir, R.B.V.B.; Afsarimanesh, N.; Liu, H.; Mukhopadhyay, S.C.; Xu, Y.; Zhadobov, M.; Sauleau, R. Multifunctional Flexible Sensor Based on Laser-Induced Graphene. Sensors 2019, 19, 3477.

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