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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Detalhes bibliográficos
Autores: Dal Cengio, Sara, Pagonabarraga Mora, Ignacio
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2019
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositório:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/148931
Acesso em linha:https://hdl.handle.net/2445/148931
Access Level:Acceso aberto
Palavra-chave: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 Physics2020202020192020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/148931Articles publicats en revistes (Física de la Matèria Condensada)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció 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:recercat.cat:2445/1489312026-05-29T05:05:01Z
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
2020
2020
2020
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:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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