The University of Southampton
University of Southampton Institutional Repository

An investigation of the factors influencing stability in continuously-powered screen-printed amperometric dissolved oxygen sensors

An investigation of the factors influencing stability in continuously-powered screen-printed amperometric dissolved oxygen sensors
An investigation of the factors influencing stability in continuously-powered screen-printed amperometric dissolved oxygen sensors
The continuously powered response of dissolved oxygen sensors fabricated as screen printed devices has been investigated. A reduction in the sensitivity of these devices has been observed when they are continuously powered at potentials of –0.6V versus Ag/AgCl reference electrodes. Periodically recorded voltammograms have indicated that the reduction in sensitivity can be attributed to a build up of hydroxyl ions beneath the sensor membrane that inhibits oxygen reduction. It has been found that powering these devices at more negative potentials mitigates against the decrease in sensitivity but results in a slowly increasing sensitivity. This is attributed to an increase in the effective area of the working electrode resulting mainly from leakage through the waterproofing layer covering the electrode interconnects.
membranes, oxygen, screen-printing, sensors, thick film
1356-5362
26-31
Atkinson, J.K.
5e9729b2-0e1f-400d-a889-c74f6390ea58
Glasspool, W.V.
0d4fac7e-d366-4b7c-b168-25fe36b76bb7
Atkinson, J.K.
5e9729b2-0e1f-400d-a889-c74f6390ea58
Glasspool, W.V.
0d4fac7e-d366-4b7c-b168-25fe36b76bb7

Atkinson, J.K. and Glasspool, W.V. (2001) An investigation of the factors influencing stability in continuously-powered screen-printed amperometric dissolved oxygen sensors. Microelectronics International, 18 (2), 26-31.

Record type: Article

Abstract

The continuously powered response of dissolved oxygen sensors fabricated as screen printed devices has been investigated. A reduction in the sensitivity of these devices has been observed when they are continuously powered at potentials of –0.6V versus Ag/AgCl reference electrodes. Periodically recorded voltammograms have indicated that the reduction in sensitivity can be attributed to a build up of hydroxyl ions beneath the sensor membrane that inhibits oxygen reduction. It has been found that powering these devices at more negative potentials mitigates against the decrease in sensitivity but results in a slowly increasing sensitivity. This is attributed to an increase in the effective area of the working electrode resulting mainly from leakage through the waterproofing layer covering the electrode interconnects.

Full text not available from this repository.

More information

Published date: 2001
Keywords: membranes, oxygen, screen-printing, sensors, thick film

Identifiers

Local EPrints ID: 21938
URI: https://eprints.soton.ac.uk/id/eprint/21938
ISSN: 1356-5362
PURE UUID: 6bd4aa33-c59f-4cea-82dc-1e5386ea2c05
ORCID for J.K. Atkinson: ORCID iD orcid.org/0000-0003-3411-8034

Catalogue record

Date deposited: 14 Mar 2006
Last modified: 06 Jun 2018 13:20

Export record

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×