Confinement-controlled rectification in a geometric nanofluidic diode

Recent experiments with electrolytes driven through conical nanopores give evidence of strong rectified current response. In such devices, the asymmetry in the confinement is responsible for the non-Ohmic response, suggesting that the interplay of entropic and enthalpic forces plays a major role. He...

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Detalles Bibliográficos
Autores: Dal Cengio, Sara, Pagonabarraga Mora, Ignacio
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/148931
Acceso en línea:https://hdl.handle.net/2445/148931
Access Level:acceso abierto
Palabra clave:Nanofluids
Díodes
Diodes
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spelling Confinement-controlled rectification in a geometric nanofluidic diodeDal Cengio, SaraPagonabarraga Mora, IgnacioNanofluidsDíodesNanofluidsDiodesRecent experiments with electrolytes driven through conical nanopores give evidence of strong rectified current response. In such devices, the asymmetry in the confinement is responsible for the non-Ohmic response, suggesting that the interplay of entropic and enthalpic forces plays a major role. Here, we propose a theoretical model to shed light on the physical mechanism underlying ionic current rectification. By use of an effective description of the ionic dynamics, we explore the system's response in different electrostatic regimes. We show that the rectification efficiency, as well as the channel selectivity, is driven by the surface-to-bulk conductivity ratio Dukhin length rather than the electrical double layer overlap.American Institute of Physics2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/148931Articles publicats en revistes (Física de la Matèria Condensada)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1063/1.5108723Journal of Chemical Physics, 2019, vol. 151, p. 044707https://doi.org/10.1063/1.5108723info:eu-repo/grantAgreement/EC/H2020/674979(c) American Institute of Physics , 2019info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1489312026-05-27T06:46:51Z
dc.title.none.fl_str_mv Confinement-controlled rectification in a geometric nanofluidic diode
title Confinement-controlled rectification in a geometric nanofluidic diode
spellingShingle Confinement-controlled rectification in a geometric nanofluidic diode
Dal Cengio, Sara
Nanofluids
Díodes
Nanofluids
Diodes
title_short Confinement-controlled rectification in a geometric nanofluidic diode
title_full Confinement-controlled rectification in a geometric nanofluidic diode
title_fullStr Confinement-controlled rectification in a geometric nanofluidic diode
title_full_unstemmed Confinement-controlled rectification in a geometric nanofluidic diode
title_sort Confinement-controlled rectification in a geometric nanofluidic diode
dc.creator.none.fl_str_mv Dal Cengio, Sara
Pagonabarraga Mora, Ignacio
author Dal Cengio, Sara
author_facet Dal Cengio, Sara
Pagonabarraga Mora, Ignacio
author_role author
author2 Pagonabarraga Mora, Ignacio
author2_role author
dc.subject.none.fl_str_mv Nanofluids
Díodes
Nanofluids
Diodes
topic Nanofluids
Díodes
Nanofluids
Diodes
description Recent experiments with electrolytes driven through conical nanopores give evidence of strong rectified current response. In such devices, the asymmetry in the confinement is responsible for the non-Ohmic response, suggesting that the interplay of entropic and enthalpic forces plays a major role. Here, we propose a theoretical model to shed light on the physical mechanism underlying ionic current rectification. By use of an effective description of the ionic dynamics, we explore the system's response in different electrostatic regimes. We show that the rectification efficiency, as well as the channel selectivity, is driven by the surface-to-bulk conductivity ratio Dukhin length rather than the electrical double layer overlap.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/148931
url https://hdl.handle.net/2445/148931
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1063/1.5108723
Journal of Chemical Physics, 2019, vol. 151, p. 044707
https://doi.org/10.1063/1.5108723
info:eu-repo/grantAgreement/EC/H2020/674979
dc.rights.none.fl_str_mv (c) American Institute of Physics , 2019
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Institute of Physics , 2019
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
dc.source.none.fl_str_mv Articles publicats en revistes (Física de la Matèria Condensada)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,223283

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