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dc.contributor.author
Tagliazucchi, Mario Eugenio
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dc.contributor.author
Szleifer, Igal
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dc.date.available
2019-07-27T19:35:00Z
dc.date.issued
2015-08
dc.identifier.citation
Tagliazucchi, Mario Eugenio; Szleifer, Igal; Salt pumping by voltage-gated nanochannels; American Chemical Society; Journal of Physical Chemistry Letters; 6; 18; 8-2015; 3534-3539
dc.identifier.issn
1948-7185
dc.identifier.uri
http://hdl.handle.net/11336/80447
dc.description.abstract
This Letter investigates voltage-gated nanochannels, where both the potential applied to the conductive membrane containing the channel (membrane potential) and the potential difference between the solutions at both sides of the membrane (transmembrane potential) are independently controlled. The predicted conductance characteristics of these fixed-potential channels dramatically differ from those of the widely studied fixed-charge nanochannels, in which the membrane is insulating and has a fixed surface charge density. The difference arises because the transmembrane potential induces an inhomogeneous charge distribution on the surface of fixed-potential nanochannels. This behavior, related to bipolar electrochemistry, has some interesting and unexpected consequences for ion transport. For example, continuously oscillating the transmembrane potential, while holding the membrane potential at the potential for which it has zero charge in equilibrium, creates fluxes of neutral salt (fluxes of anions and cations in the same direction and number) through the channel, which is an interesting phenomenon for desalination applications.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Bipolar Diode
dc.subject
Bipolar Electrochemistry
dc.subject
Desalinization
dc.subject
Ion Current
dc.subject
Membrane
dc.subject
Nanopore
dc.subject
Nernst-Planck
dc.subject.classification
Físico-Química, Ciencia de los Polímeros, Electroquímica
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dc.subject.classification
Ciencias Químicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Salt pumping by voltage-gated nanochannels
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-06-11T19:46:51Z
dc.journal.volume
6
dc.journal.number
18
dc.journal.pagination
3534-3539
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Tagliazucchi, Mario Eugenio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
dc.description.fil
Fil: Szleifer, Igal. Northwestern University; Estados Unidos
dc.journal.title
Journal of Physical Chemistry Letters
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/acs.jpclett.5b01315
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/acs.jpclett.5b01315
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