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Electrokinetic droplet transport from electroosmosis to electrophoresis
Droplet transport in microfluidic channels by electrically induced flows often entails the simultaneous presence of electroosmosis and electrophoresis. Here we make use of coupled lattice-Boltzmann/molecular dynamics simulations to compute the mobility of a droplet in a microchannel under the effect...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Royal Society of Chemistry
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6289104/ https://www.ncbi.nlm.nih.gov/pubmed/30444235 http://dx.doi.org/10.1039/c8sm01788c |
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author | Bazarenko, Andrei Sega, Marcello |
author_facet | Bazarenko, Andrei Sega, Marcello |
author_sort | Bazarenko, Andrei |
collection | PubMed |
description | Droplet transport in microfluidic channels by electrically induced flows often entails the simultaneous presence of electroosmosis and electrophoresis. Here we make use of coupled lattice-Boltzmann/molecular dynamics simulations to compute the mobility of a droplet in a microchannel under the effect of an external electric field. By varying the droplet solvation free energy of the counterions released at the channel walls, we observe the continuous transition between the electroosmotic and electrophoretic regime. We show that it is possible to describe the mobility of a droplet in a unified, consistent way, by combining the theoretical description of the electroosmotic flow with, in this case, the Hückel limit of electrophoresis, modified in order to take into account the Hadamard–Rybczynski droplet drag. |
format | Online Article Text |
id | pubmed-6289104 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-62891042019-01-09 Electrokinetic droplet transport from electroosmosis to electrophoresis Bazarenko, Andrei Sega, Marcello Soft Matter Chemistry Droplet transport in microfluidic channels by electrically induced flows often entails the simultaneous presence of electroosmosis and electrophoresis. Here we make use of coupled lattice-Boltzmann/molecular dynamics simulations to compute the mobility of a droplet in a microchannel under the effect of an external electric field. By varying the droplet solvation free energy of the counterions released at the channel walls, we observe the continuous transition between the electroosmotic and electrophoretic regime. We show that it is possible to describe the mobility of a droplet in a unified, consistent way, by combining the theoretical description of the electroosmotic flow with, in this case, the Hückel limit of electrophoresis, modified in order to take into account the Hadamard–Rybczynski droplet drag. Royal Society of Chemistry 2018-12-21 2018-11-16 /pmc/articles/PMC6289104/ /pubmed/30444235 http://dx.doi.org/10.1039/c8sm01788c Text en This journal is © The Royal Society of Chemistry 2018 http://creativecommons.org/licenses/by/3.0/ This article is freely available. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence (CC BY 3.0) |
spellingShingle | Chemistry Bazarenko, Andrei Sega, Marcello Electrokinetic droplet transport from electroosmosis to electrophoresis |
title | Electrokinetic droplet transport from electroosmosis to electrophoresis |
title_full | Electrokinetic droplet transport from electroosmosis to electrophoresis |
title_fullStr | Electrokinetic droplet transport from electroosmosis to electrophoresis |
title_full_unstemmed | Electrokinetic droplet transport from electroosmosis to electrophoresis |
title_short | Electrokinetic droplet transport from electroosmosis to electrophoresis |
title_sort | electrokinetic droplet transport from electroosmosis to electrophoresis |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6289104/ https://www.ncbi.nlm.nih.gov/pubmed/30444235 http://dx.doi.org/10.1039/c8sm01788c |
work_keys_str_mv | AT bazarenkoandrei electrokineticdroplettransportfromelectroosmosistoelectrophoresis AT segamarcello electrokineticdroplettransportfromelectroosmosistoelectrophoresis |