Towards Bendable Piezoelectric Oxide Semiconductor Field Effect Transistor Based Touch Sensor

Gupta, S., Heidari, H. , Lorenzelli, L. and Dahiya, R. (2016) Towards Bendable Piezoelectric Oxide Semiconductor Field Effect Transistor Based Touch Sensor. In: IEEE International Symposium on Circuits and Systems (ISCAS), Montreal, Canada, 22-25 May 2016, pp. 345-348. ISBN 9781479953417 (doi:10.1109/ISCAS.2016.7527241)

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This paper reports recent advances related to the piezoelectric oxide semiconductor field effect transistor (POSFET) based touch sensing system research. We reported in past, the POSFETs with basic electronics realized on planar silicon substrates using CMOS technology. However, the planar POSFETs could not be used on 3D or curved surfaces such as the fingertip of a robot. To overcome this challenge we are now investigating the ultra-thin-chip approach for obtaining bendable POSFETs tactile sensing array. This paper presents this approach towards obtaining bendable POSFETs. Furthermore, for the first time the theoretical behavior of POSFETs devices are examined by combining the piezoelectric capacitor model proposed and the physics of underlying metal-oxide-semiconductor (MOS) FETs in the linear and saturation regions. The device characteristic equations are simulated using MATLAB and comparable matching is achieved with the experimental measurements. The model result gives a unique insight into geometrical and material properties of piezoelectric polymer on the electrical properties of transistor for flexible electronics applications.

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Heidari, Dr Hadi and Dahiya, Professor Ravinder
Authors: Gupta, S., Heidari, H., Lorenzelli, L., and Dahiya, R.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Copyright Holders:Copyright © 2016 IEEE
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher
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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
682141CONTESTRavinder DahiyaEuropean Commission (EC)317488ENG - ENGINEERING ELECTRONICS & NANO ENG
663861Engineering Fellowships for Growth: Printed Tactile SKINRavinder DahiyaEngineering & Physical Sciences Research Council (EPSRC)EP/M002527/1ENG - ENGINEERING ELECTRONICS & NANO ENG