Flexible Strain Sensor with NFC Tag for Food Packaging

Escobedo, P. , Bhattacharjee, M. , Nikbakhtnasrabadi, F. and Dahiya, R. (2020) Flexible Strain Sensor with NFC Tag for Food Packaging. In: IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS 2020), Manchester, UK, 16-19 Aug 2020, ISBN 9781728152783 (doi: 10.1109/FLEPS49123.2020.9239568)

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In this work we present a polymer-based flexible strain sensor integrated with an NFC tag to detect strain by means of a visual LED indicator. The sensor was fabricated using conductive polymer poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) as an active material inside a flexible and transparent polymer Polydimethylsiloxane (PDMS) microchannel. The strain sensor changes its resistance at different bending conditions, showing up to three order increase in resistance for ∼100 bending. A custom-developed passive NFC tag with an LED connected in series to the strain sensor is powered from an NFC reader to detect strain in a semi-quantitative way. The light intensity of the LED indicator is modulated according to the strain level, showing maximum brightness (∼67 lux) for relaxed or no strain condition, and being almost OFF (∼8 lux) for the maximum strain condition. The potential application of the NFC-based strain sensor system in food package for spoilage detection is also presented.

Item Type:Conference Proceedings
Additional Information:This work was supported in North West Centre for Advanced Manufacturing (NW CAM) project supported by the European Union’s INTERREG VA Programme (H2020-Intereg-IVA5055), managed by the Special EU Programmes Body (SEUPB).
Glasgow Author(s) Enlighten ID:Nikbakhtnasrabadi, Dr Fatemeh and Bhattacharjee, Mr Mitradip and Escobedo, Dr Pablo and Dahiya, Professor Ravinder
Authors: Escobedo, P., Bhattacharjee, M., Nikbakhtnasrabadi, F., and Dahiya, R.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Copyright Holders:Copyright © 2020 IEEE
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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