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Proceedings 2017, 1(4), 360;

Flexible Hydrogel Capacitive Pressure Sensor for Underwater Applications

School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 999002, Singapore
Singapore-MIT Alliance for Research and Technology (SMART), Singapore 999002, Singapore
Department of Mechanical Engineering, Massachusetts Institute of Technology, Boston, MA 547609, USA
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
Author to whom correspondence should be addressed.
Published: 7 August 2017
(This article belongs to the Proceedings of Eurosensors 2017)
PDF [697 KB, uploaded 13 October 2017]


This paper reports development of a novel, flexible hydrogel based capacitive pressure sensor. It features a simple design of hydrogel thin film sandwiched between two gold electrodes. The sensor shows linear increase in output with increase in pressure. The microporous network of hydrogel enables high water retention while its flexible and stretchable structure ensures usage over large areas. These factors, combined with its stability in water, make it an ideal candidate for underwater applications. Further, the physical and chemical properties of hydrogels can be tailored to tune the capacitance to specific sensing needs. Flexible arrays of capacitive sensors with hydrogel hold great potential for underwater smart skin applications.
Keywords: capacitive; hydrogel; pressure sensor; smart skin capacitive; hydrogel; pressure sensor; smart skin
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Kanhere, E.; Bora, M.; Miao, J.; Triantafyllou, M. Flexible Hydrogel Capacitive Pressure Sensor for Underwater Applications. Proceedings 2017, 1, 360.

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