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Proceedings 2017, 1(4), 620; doi:10.3390/proceedings1040620

Inkjet-Printed ON/OFF Force Sensor on Flexible Substrate for Ultra-Low Power Applications

Aix Marseille Univ, Université de Toulon, CNRS, IM2NP, Marseille, France
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
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Published: 17 August 2017
(This article belongs to the Proceedings of Eurosensors 2017)
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Abstract

An ON/OFF force sensor is fabricated by inkjet-printing process on flexible substrates. The goal is to obtain two distinct impedance states respectively to the applied force in order to be easily identifiable by a conditioning electronics for ultra-low power applications, and to avoid the use of an analog-to-digital convertor (ADC) in particular. The sensor is composed of two electrodes separated by a spacer. The elastomer layer constituting the spacer is in polydimethylsiloxane (PDMS). An opening is created in this spacer between the two electrodes in order to define an active area. The force is applied perpendicularly to the surface of the sensor. When no force is applied, the sensor’s electrodes are not in contact, and the resistance ROFF tends toward infinity. When a force is applied, the sensor’s electrodes are in contact, and the resistance RON tends toward 0. The minimal actuation force is as low as 0.01N.
Keywords: force sensor; inkjet-printing technology; flexible substrate; printed electronics force sensor; inkjet-printing technology; flexible substrate; printed electronics
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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MDPI and ACS Style

Bènevent, E.; Dankoco, M.D.; Bendahan, M. Inkjet-Printed ON/OFF Force Sensor on Flexible Substrate for Ultra-Low Power Applications. Proceedings 2017, 1, 620.

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