Graphene based low voltage field effect transistor coupled with biodegradable piezoelectric material based dynamic pressure sensor

Yogeswaran, N., Seyed Hosseini, E. and Dahiya, R. (2020) Graphene based low voltage field effect transistor coupled with biodegradable piezoelectric material based dynamic pressure sensor. ACS Applied Materials and Interfaces, 12(48), pp. 54035-54040. (doi: 10.1021/acsami.0c13637) (PMID:33205956)

Abstract

Pressure sensors form the basic building block for realization of an electronic or tactile skin used in prothesis, robotics, and other similar applications. This paper presents a device consisting of biodegradable piezoelectric material based dynamic pressure sensor coupled with a graphene field-effect-transistor (GFET) operated at very low voltage (50 mV). The device has a biodegradable β-glycine/chitosan composite based metal–insulator–metal (MIM) structure connected with GFET in an extended gate configuration. The developed device shows a sensitivity of 2.70 × 10–4 kPa–1 for a pressure range of 5–20 kPa and 7.56 × 10–4 kPa–1 for a pressure range between 20 and 35 kPa. A distinctive feature of the presented device is its very low operation voltage, which offers a significant advantage toward the development of energy efficient large-area electronic skin. Further, the biodegradability of piezoelectric material makes the presented sensors useful in terms of reduced electronic waste, which is currently another growing area of interest.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Yogeswaran, Mr Nivasan and Dahiya, Professor Ravinder and Seyed Hosseini, Dr Ensieh
• Authors: Yogeswaran, N., Seyed Hosseini, E., and Dahiya, R.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: ACS Applied Materials and Interfaces
• Publisher: American Chemical Society
• ISSN: 1944-8244
• ISSN (Online): 1944-8252
• Copyright Holders: Copyright © 2020 American Chemical Society
• First Published: First published in ACS Applied Materials and Interfaces 12(48):54035-54040
• Publisher Policy: Reproduced in accordance with the publisher copyright policy

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
301728		Engineering Fellowships for Growth: Printed Tactile SKIN	Ravinder Dahiya	Engineering and Physical Sciences Research Council (EPSRC)	EP/R029644/1	ENG - Electronics & Nanoscale Engineering
301327		`Hetero-print: A holistic approach to transfer-printing for heterogeneous integration in manufacturing	Peter Skabara	Engineering and Physical Sciences Research Council (EPSRC)	EP/R03480X/1	ENG - Electronics & Nanoscale Engineering