Temperature compensated tactile sensing using MOSFET with P(VDF-TrFE)/BaTiO3 capacitor as extended gate

Gupta, S., Shakthivel, D., Lorenzelli, L. and Dahiya, R. (2019) Temperature compensated tactile sensing using MOSFET with P(VDF-TrFE)/BaTiO3 capacitor as extended gate. IEEE Sensors Journal, 19(2), pp. 435-442. (doi:10.1109/JSEN.2018.2876678)

Gupta, S., Shakthivel, D., Lorenzelli, L. and Dahiya, R. (2019) Temperature compensated tactile sensing using MOSFET with P(VDF-TrFE)/BaTiO3 capacitor as extended gate. IEEE Sensors Journal, 19(2), pp. 435-442. (doi:10.1109/JSEN.2018.2876678)

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Abstract

This work presents Poly(vinylidene fluoride – trifluoroethylene))/Barium Titanate (P(VDF-TrFE)-BT) nanocomposite based touch sensors tightly coupled with MOSFET devices in extended gate configuration. The P(VDF-TrFE)-BT nanocomposite exploits the distinct piezo and pyroelectric properties of P(VDF-TrFE) polymer matrix and BT fillers to suppress the temperature response when force and temperature are varied simultaneously. The reasons for this unique feature have been established through structural and electrical characterization of nanocomposite. The proposed touch sensor was tested over a wide range of force/pressure (0-4N)/(0-364 Pa) and temperature (26-70°C) with almost linear response. The sensitivity towards force/pressure and temperature sensor are 670 mV/N/7.36 mV/Pa and 15.34 mV/°C respectively. With this modified touch sensing capability, the proposed sensors will open new direction for tactile sensing in robotic applications.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Gupta, Mr Shoubhik and Dahiya, Professor Ravinder and Shakthivel, Dr Dhayalan
Authors: Gupta, S., Shakthivel, D., Lorenzelli, L., and Dahiya, R.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:IEEE Sensors Journal
Publisher:IEEE
ISSN:1530-437X
ISSN (Online):1558-1748
Published Online:18 October 2018
Copyright Holders:Copyright © 2018 IEEE
First Published:First published in IEEE Sensors Journal 19(2): 435-442
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
663861Engineering Fellowships for Growth: Printed Tactile SKINRavinder DahiyaEngineering and Physical Sciences Research Council (EPSRC)EP/M002527/1ENG - ENGINEERING ELECTRONICS & NANO ENG
682141CONTESTRavinder DahiyaEuropean Commission (EC)317488ENG - ENGINEERING ELECTRONICS & NANO ENG