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Modeling and performance comparison of screen-printed, impedance spectroscopy probes for harsh environments

Modeling and performance comparison of screen-printed, impedance spectroscopy probes for harsh environments
Modeling and performance comparison of screen-printed, impedance spectroscopy probes for harsh environments
This paper compares the simulated performance of three different screen-printed probe geometries for Electrochemical Impedance Spectroscopy probes for use in harsh environments. The best performing probe, which is equipped with guarding electrodes that are proven to help with the electric field uniformity, shows a linear response with the medium’s resistivity using a 1 kHz sinusoidal input current with a sensitivity of 0.163 mV/ $\Omega \text{m}$ in the range of $2.5~\Omega \text{m}$ to 50 $\Omega \text{m}$ in a medium with relative permittivity of 20. Additionally, the phase shift shows a linear relationship to the medium’s relative permittivity and a sensitivity of 0.1 degrees/ $\varepsilon _{{\text {r}}}$ in the range of 5–81 using a 1 MHz sinusoidal input current. The equivalent circuit models of the probes were constructed and the values of the components have been reported. The best performing probe was fabricated and experimentally tested to back up the theoretical simulations and proposed models. The experimental and simulated values are within a ±6% error margin.
Sensors, electric field, electrochemical impedance spectroscopy, electromagnetic simulations, sensor model, thick-film
1530-437X
2533-2542
Sophocleous, Marios
908541f4-d6e1-4fdf-9423-fddc2b12bcbf
Garcia-Breijo, Eduardo
53771f80-0c8e-439f-8f23-87f1742e9486
Atkinson, John
5e9729b2-0e1f-400d-a889-c74f6390ea58
Georgiou, Julius
60731aa3-354c-43f1-80c1-bbf63869b062
Sophocleous, Marios
908541f4-d6e1-4fdf-9423-fddc2b12bcbf
Garcia-Breijo, Eduardo
53771f80-0c8e-439f-8f23-87f1742e9486
Atkinson, John
5e9729b2-0e1f-400d-a889-c74f6390ea58
Georgiou, Julius
60731aa3-354c-43f1-80c1-bbf63869b062

Sophocleous, Marios, Garcia-Breijo, Eduardo, Atkinson, John and Georgiou, Julius (2020) Modeling and performance comparison of screen-printed, impedance spectroscopy probes for harsh environments. IEEE Sensors Journal, 20 (5), 2533-2542, [8890737]. (doi:10.1109/JSEN.2019.2951200).

Record type: Article

Abstract

This paper compares the simulated performance of three different screen-printed probe geometries for Electrochemical Impedance Spectroscopy probes for use in harsh environments. The best performing probe, which is equipped with guarding electrodes that are proven to help with the electric field uniformity, shows a linear response with the medium’s resistivity using a 1 kHz sinusoidal input current with a sensitivity of 0.163 mV/ $\Omega \text{m}$ in the range of $2.5~\Omega \text{m}$ to 50 $\Omega \text{m}$ in a medium with relative permittivity of 20. Additionally, the phase shift shows a linear relationship to the medium’s relative permittivity and a sensitivity of 0.1 degrees/ $\varepsilon _{{\text {r}}}$ in the range of 5–81 using a 1 MHz sinusoidal input current. The equivalent circuit models of the probes were constructed and the values of the components have been reported. The best performing probe was fabricated and experimentally tested to back up the theoretical simulations and proposed models. The experimental and simulated values are within a ±6% error margin.

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08890737
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e-pub ahead of print date: 4 November 2019
Published date: 1 March 2020
Keywords: Sensors, electric field, electrochemical impedance spectroscopy, electromagnetic simulations, sensor model, thick-film

Identifiers

Local EPrints ID: 438178
URI: http://eprints.soton.ac.uk/id/eprint/438178
ISSN: 1530-437X
PURE UUID: 2b597024-d2b5-4196-aaff-423610d87cf7
ORCID for John Atkinson: ORCID iD orcid.org/0000-0003-3411-8034

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Date deposited: 03 Mar 2020 17:47
Last modified: 17 Mar 2024 02:32

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Contributors

Author: Marios Sophocleous
Author: Eduardo Garcia-Breijo
Author: John Atkinson ORCID iD
Author: Julius Georgiou

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