PEDOT:PSS based disposable humidity sensor for skin moisture monitoring

Beniwal, A. , John, D. A. and Dahiya, R. (2023) PEDOT:PSS based disposable humidity sensor for skin moisture monitoring. IEEE Sensors Letters, 7(3), 2000304. (doi: 10.1109/LSENS.2023.3245624)

Abstract

This paper presents a flexible and disposable humidity sensor based on Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS). The sensing layer is developed by drop casting PEDOT:PSS on screen printed graphene-carbon (G-C) ink based interdigitated electrodes (IDEs) on paper substrate. The humidity sensing properties are investigated in a wide humidity range (25%RH - 90%RH) at room temperature (RT; 27 °C ± 2 °C). The sensor exhibits substantial % response (118.5% at 90%RH) in the considered range with response/recovery time as 70/30 seconds (sec). The applicability of the sensor has been demonstrated for skin moisture/humidity monitoring under normal and moist conditions. A read-out circuit is designed for demonstrating the real-time monitoring of skin moisture level. The obtained results indicate the suitability of the developed sensor for skin moisture monitoring, environmental humidity monitoring, and non-contact switching is areas such as healthcare and agriculture.

• Item Type: Articles
• Additional Information: This work was supported by the European Commission through Innovative Training Network AQUASENSE (H2020-MSCA-ITN-2018-813680).
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Dahiya, Professor Ravinder and John, Dr Dina and Beniwal, Dr Ajay
• Authors: Beniwal, A., John, D. A., and Dahiya, R.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: IEEE Sensors Letters
• Publisher: IEEE
• ISSN: 2475-1472
• ISSN (Online): 2475-1472
• Published Online: 16 February 2023
• Copyright Holders: Copyright © 2023 IEEE
• First Published: First published in IEEE Sensors Letters 7(3): 2000304
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
303114		Innovative Network for Training in Water and Food Quality using Disposable Sensors,	Ravinder Dahiya	European Commission (EC)	813680	ENG - Electronics & Nanoscale Engineering