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Multiphase Actuation of AC Electrothermal Micropump
Electrothermal micropumps apply an AC electric field to a conductive fluid within the range of 10 kHz–1 MHz to generate fluid flow. In this frequency range, coulombic forces dominate fluid interactions over opposing dielectric forces, resulting in high flow rates (~50–100 μm/s). To date, the electro...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10145383/ https://www.ncbi.nlm.nih.gov/pubmed/37420991 http://dx.doi.org/10.3390/mi14040758 |
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author | Cenaiko, Stirling Lijnse, Thomas Dalton, Colin |
author_facet | Cenaiko, Stirling Lijnse, Thomas Dalton, Colin |
author_sort | Cenaiko, Stirling |
collection | PubMed |
description | Electrothermal micropumps apply an AC electric field to a conductive fluid within the range of 10 kHz–1 MHz to generate fluid flow. In this frequency range, coulombic forces dominate fluid interactions over opposing dielectric forces, resulting in high flow rates (~50–100 μm/s). To date, the electrothermal effect—using asymmetrical electrodes—has been tested only with single-phase and 2-phase actuation, while dielectrophoretic micropumps have shown improved flow rates with 3- and 4-phase actuation. Simulating muti-phase signals in COMSOL Multiphysics requires additional modules and a more involved implementation to accurately represent the electrothermal effect in a micropump. Here, we report detailed simulations of the electrothermal effect under multi-phase conditions, including single-phase, 2-phase, 3-phase and 4-phase actuation patterns. These computational models indicate that 2-phase actuation leads to the highest flow rate, with 3-phase resulting in a 5% reduced flow rate and 4-phase resulting in an 11% reduced flow rate compared to 2-phase. With these modifications to the simulation, various actuation patterns can later be tested in COMSOL for a range of electrokinetic techniques. |
format | Online Article Text |
id | pubmed-10145383 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-101453832023-04-29 Multiphase Actuation of AC Electrothermal Micropump Cenaiko, Stirling Lijnse, Thomas Dalton, Colin Micromachines (Basel) Article Electrothermal micropumps apply an AC electric field to a conductive fluid within the range of 10 kHz–1 MHz to generate fluid flow. In this frequency range, coulombic forces dominate fluid interactions over opposing dielectric forces, resulting in high flow rates (~50–100 μm/s). To date, the electrothermal effect—using asymmetrical electrodes—has been tested only with single-phase and 2-phase actuation, while dielectrophoretic micropumps have shown improved flow rates with 3- and 4-phase actuation. Simulating muti-phase signals in COMSOL Multiphysics requires additional modules and a more involved implementation to accurately represent the electrothermal effect in a micropump. Here, we report detailed simulations of the electrothermal effect under multi-phase conditions, including single-phase, 2-phase, 3-phase and 4-phase actuation patterns. These computational models indicate that 2-phase actuation leads to the highest flow rate, with 3-phase resulting in a 5% reduced flow rate and 4-phase resulting in an 11% reduced flow rate compared to 2-phase. With these modifications to the simulation, various actuation patterns can later be tested in COMSOL for a range of electrokinetic techniques. MDPI 2023-03-29 /pmc/articles/PMC10145383/ /pubmed/37420991 http://dx.doi.org/10.3390/mi14040758 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Cenaiko, Stirling Lijnse, Thomas Dalton, Colin Multiphase Actuation of AC Electrothermal Micropump |
title | Multiphase Actuation of AC Electrothermal Micropump |
title_full | Multiphase Actuation of AC Electrothermal Micropump |
title_fullStr | Multiphase Actuation of AC Electrothermal Micropump |
title_full_unstemmed | Multiphase Actuation of AC Electrothermal Micropump |
title_short | Multiphase Actuation of AC Electrothermal Micropump |
title_sort | multiphase actuation of ac electrothermal micropump |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10145383/ https://www.ncbi.nlm.nih.gov/pubmed/37420991 http://dx.doi.org/10.3390/mi14040758 |
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