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Development of a novel highly conductive and flexible cotton yarn for wearable pH sensor technology

Smith, Rachel E., Totti, Stella, Velliou, Eirini, Campagnolo, Paola, Hingley-Wilson, Suzanne M., Ward, Neil I., Varcoe, John R. and Crean, Carol (2019) Development of a novel highly conductive and flexible cotton yarn for wearable pH sensor technology Sensors and Actuators B: Chemical, 287. pp. 338-345.

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Abstract

The simple and effective approach of “dipping and drying” cotton yarn in a dispersion of poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonate) (PEDOT:PSS) and multi-walled carbon nanotubes (MWCNT) resulted in the development of a highly conductive and flexible cotton fibres. Subsequent polyaniline (PANi) deposition yielded electrodes with significant biocompatible and antibacterial properties that could be fabricated (alongside quasi-reference electrodes) into solid-state wearable pH sensors, which achieve rapid, selective, and Nernstian responses (-61 ± 2 mV pH-1) over a wide pH range (2.0 – 12.0), even in a pH-adjusted artificial sweat matrix. This development represents an important progression towards the realisation of real-time, on-body, wearable sensors.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemistry
Authors :
NameEmailORCID
Smith, Rachel E.r.drinkwater@surrey.ac.uk
Totti, Stellastyliani.totti@surrey.ac.uk
Velliou, Eirini
Campagnolo, Paola
Hingley-Wilson, Suzanne M.
Ward, Neil I.N.Ward@surrey.ac.uk
Varcoe, John R.J.Varcoe@surrey.ac.uk
Crean, Carolc.crean@surrey.ac.uk
Date : 2019
Funders : Engineering and Physical Sciences Research Council (EPSRC)
DOI : 10.1016/j.snb.2019.01.088
Copyright Disclaimer : © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords : Wearable sensor; pH; PEDOT:PSS; Carbon nanotubes; Conductive cotton; Quasi-reference electrode
Depositing User : Clive Harris
Date Deposited : 15 Feb 2019 09:55
Last Modified : 02 Feb 2020 02:08
URI: http://epubs.surrey.ac.uk/id/eprint/850434

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