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Joule Heating Effects on Transport-Induced-Charge Phenomena in an Ultrathin Nanopore

Transport-induced-charge (TIC) phenomena, in which the concentration imbalance between cations and anions occurs when more than two chemical potential gradients coexist within an ultrathin dimension, entail numerous nanofluidic systems. Evidence has indicated that the presence of TIC produces a nonl...

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Autores principales: Wang, Zhixuan, Hsu, Wei-Lun, Tsuchiya, Shuntaro, Paul, Soumyadeep, Alizadeh, Amer, Daiguji, Hirofumi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7761093/
https://www.ncbi.nlm.nih.gov/pubmed/33256113
http://dx.doi.org/10.3390/mi11121041
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author Wang, Zhixuan
Hsu, Wei-Lun
Tsuchiya, Shuntaro
Paul, Soumyadeep
Alizadeh, Amer
Daiguji, Hirofumi
author_facet Wang, Zhixuan
Hsu, Wei-Lun
Tsuchiya, Shuntaro
Paul, Soumyadeep
Alizadeh, Amer
Daiguji, Hirofumi
author_sort Wang, Zhixuan
collection PubMed
description Transport-induced-charge (TIC) phenomena, in which the concentration imbalance between cations and anions occurs when more than two chemical potential gradients coexist within an ultrathin dimension, entail numerous nanofluidic systems. Evidence has indicated that the presence of TIC produces a nonlinear response of electroosmotic flow to the applied voltage, resulting in complex fluid behavior. In this study, we theoretically investigate thermal effects due to Joule heating on TIC phenomena in an ultrathin nanopore by computational fluid dynamics simulation. Our modeling results show that the rise of local temperature inside the nanopore significantly enhances TIC effects and thus has a significant influence on electroosmotic behavior. A local maximum of the solution conductivity occurs near the entrance of the nanopore at the high salt concentration end, resulting in a reversal of TIC across the nanopore. The Joule heating effects increase the reversal of TIC with the synergy of the negatively charged nanopore, and they also enhance the electroosmotic flow regardless of whether the nanopore is charged. These theoretical observations will improve our knowledge of nonclassical electrokinetic phenomena for flow control in nanopore systems.
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spelling pubmed-77610932020-12-26 Joule Heating Effects on Transport-Induced-Charge Phenomena in an Ultrathin Nanopore Wang, Zhixuan Hsu, Wei-Lun Tsuchiya, Shuntaro Paul, Soumyadeep Alizadeh, Amer Daiguji, Hirofumi Micromachines (Basel) Article Transport-induced-charge (TIC) phenomena, in which the concentration imbalance between cations and anions occurs when more than two chemical potential gradients coexist within an ultrathin dimension, entail numerous nanofluidic systems. Evidence has indicated that the presence of TIC produces a nonlinear response of electroosmotic flow to the applied voltage, resulting in complex fluid behavior. In this study, we theoretically investigate thermal effects due to Joule heating on TIC phenomena in an ultrathin nanopore by computational fluid dynamics simulation. Our modeling results show that the rise of local temperature inside the nanopore significantly enhances TIC effects and thus has a significant influence on electroosmotic behavior. A local maximum of the solution conductivity occurs near the entrance of the nanopore at the high salt concentration end, resulting in a reversal of TIC across the nanopore. The Joule heating effects increase the reversal of TIC with the synergy of the negatively charged nanopore, and they also enhance the electroosmotic flow regardless of whether the nanopore is charged. These theoretical observations will improve our knowledge of nonclassical electrokinetic phenomena for flow control in nanopore systems. MDPI 2020-11-26 /pmc/articles/PMC7761093/ /pubmed/33256113 http://dx.doi.org/10.3390/mi11121041 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wang, Zhixuan
Hsu, Wei-Lun
Tsuchiya, Shuntaro
Paul, Soumyadeep
Alizadeh, Amer
Daiguji, Hirofumi
Joule Heating Effects on Transport-Induced-Charge Phenomena in an Ultrathin Nanopore
title Joule Heating Effects on Transport-Induced-Charge Phenomena in an Ultrathin Nanopore
title_full Joule Heating Effects on Transport-Induced-Charge Phenomena in an Ultrathin Nanopore
title_fullStr Joule Heating Effects on Transport-Induced-Charge Phenomena in an Ultrathin Nanopore
title_full_unstemmed Joule Heating Effects on Transport-Induced-Charge Phenomena in an Ultrathin Nanopore
title_short Joule Heating Effects on Transport-Induced-Charge Phenomena in an Ultrathin Nanopore
title_sort joule heating effects on transport-induced-charge phenomena in an ultrathin nanopore
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7761093/
https://www.ncbi.nlm.nih.gov/pubmed/33256113
http://dx.doi.org/10.3390/mi11121041
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