Flexible temperature and flow sensor from laser-induced graphene

Abstract
Herein we present a flexible temperature sensor and a flow speed sensor based on laser-induced graphene. The main benefits arise from peculiar electrical, thermal and mechanical performances of the material thus obtained, along with a cheap and simple fabrication process. The temperature sensor is a negative temperature coefficient thermistor with non-linear response typical of semi-metals. The thermistor shows a 4% decrease of the resistance in a temperature range of 20–60 °C. The flow sensor exploits the piezoresistive properties of laser-induced graphene and can be used both in gaseous and liquid media thanks to a protective polydimethylsiloxane coating. Main characteristics are ultra-fast response and versatility in design offered by the laser technology.

Citation
Marengo M, Marinaro G, Kosel J (2017) Flexible temperature and flow sensor from laser-induced graphene. 2017 IEEE SENSORS. Available: http://dx.doi.org/10.1109/ICSENS.2017.8234429.

Acknowledgements
Research reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST).

Publisher
Institute of Electrical and Electronics Engineers (IEEE)

Journal
2017 IEEE SENSORS

DOI
10.1109/ICSENS.2017.8234429

Additional Links
http://ieeexplore.ieee.org/document/8234429/

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