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Article

PVDF-TrFE-Based Stretchable Contact and Non-Contact Temperature Sensor for E-Skin Application

Flexible Electronics Department, Ecole Nationale Supérieure des Mines CMP-EMSE, MOC, 880 avenue de Mimet, 13541 Gardanne, France
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Sensors 2020, 20(3), 623; https://doi.org/10.3390/s20030623
Received: 23 December 2019 / Revised: 13 January 2020 / Accepted: 17 January 2020 / Published: 22 January 2020
(This article belongs to the Special Issue Flexible and Stretchable Electronic Sensors)
Development of stretchable electronics has been driven by key applications such as electronics skin for robotic or prosthetic. Mimicking skin functionalities imposes at a minimal level: stretchability, pressure, and temperature sensing capabilities. While the research on pressure sensors for artificial skin is extensive, stretchable temperature sensors remain less explored. In this work, a stretchable temperature and infrared sensor has been developed on a polydimethylsiloxane substrate. The sensor is based on poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE) as a pyroelectric material. This material is sandwiched between two electrodes. The first one consists of aluminium serpentines, covered by gold in order to get electrical contact and maximum stretchability. The second one is based on poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) that has shown good electrical compatibility with PVDF-TrFE and provides the stretchability of the top electrode. Without poling the PVDF-TrFE, sensor has shown a sensitivity of around 7 pF.°C−1 up to 35% strain without any change in its behaviour. Then, taking advantage on infrared absorption of PEDOT:PSS, a poled device has shown a pyroelectric peak of 13 mV to an infrared illumination of 5 mW at 830 nm. This stretchable device valuably allows an electronic skin (e-skin) use for contact and more importantly non-contact thermal sensing. View Full-Text
Keywords: stretchable electronic; artificial skin; infrared sensing; temperature sensing; organic electronic stretchable electronic; artificial skin; infrared sensing; temperature sensing; organic electronic
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MDPI and ACS Style

Marchiori, B.; Regal, S.; Arango, Y.; Delattre, R.; Blayac, S.; Ramuz, M. PVDF-TrFE-Based Stretchable Contact and Non-Contact Temperature Sensor for E-Skin Application. Sensors 2020, 20, 623. https://doi.org/10.3390/s20030623

AMA Style

Marchiori B, Regal S, Arango Y, Delattre R, Blayac S, Ramuz M. PVDF-TrFE-Based Stretchable Contact and Non-Contact Temperature Sensor for E-Skin Application. Sensors. 2020; 20(3):623. https://doi.org/10.3390/s20030623

Chicago/Turabian Style

Marchiori, Bastien, Simon Regal, Yanid Arango, Roger Delattre, Sylvain Blayac, and Marc Ramuz. 2020. "PVDF-TrFE-Based Stretchable Contact and Non-Contact Temperature Sensor for E-Skin Application" Sensors 20, no. 3: 623. https://doi.org/10.3390/s20030623

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