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Fluoride-Induced Negative Differential Resistance in Nanopores: Experimental and Theoretical Characterization

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Fluoride-Induced Negative Differential Resistance in Nanopores: Experimental and Theoretical Characterization

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dc.contributor.author	Perez-Grau, Jose J.
dc.contributor.author	Ramírez Hoyos, Patricio
dc.contributor.author	García Morales, Vladimir
dc.contributor.author	Cervera Montesinos, Javier
dc.contributor.author	Nasir, Saima
dc.contributor.author	Ali, Mubarak
dc.contributor.author	Ensinger, Wolfgang
dc.contributor.author	Mafé, Salvador
dc.date.accessioned	2023-01-17T15:21:28Z
dc.date.available	2023-01-17T15:21:28Z
dc.date.issued	2021
dc.identifier.citation	Perez-Grau, Jose J. Ramírez Hoyos, Patricio García Morales, Vladimir Cervera Montesinos, Javier Nasir, Saima Ali, Mubarak Ensinger, Wolfgang Mafé, Salvador 2021 Fluoride-Induced Negative Differential Resistance in Nanopores: Experimental and Theoretical Characterization Acs Applied Materials & Interfaces 13 45 54447 54455
dc.identifier.uri	https://hdl.handle.net/10550/84993
dc.description.abstract	We describe experimentally and theoretically the fluoride-induced negative differential resistance (NDR) phenomena observed in conical nanopores operating in aqueous electrolyte solutions. The threshold voltage switching occurs around 1 V and leads to sharp current drops in the nA range with a peak-to-valley ratio close to 10. The experimental characterization of the NDR effect with single pore and multipore samples concern different pore radii, charge concentrations, scan rates, salt concentrations, solvents, and cations. The experimental fact that the effective radius of the pore tip zone is of the same order of magnitude as the Debye length for the low salt concentrations used here is suggestive of a mixed pore surface and bulk conduction regime. Thus, we propose a two-region conductance model where the mobile cations in the vicinity of the negative pore charges are responsible for the surface conductance, while the bulk solution conductance is assumed for the pore center region.
dc.language.iso	eng
dc.relation.ispartof	Acs Applied Materials & Interfaces, 2021, vol. 13, num. 45, p. 54447-54455
dc.subject	Nanotecnologia
dc.subject	Materials
dc.title	Fluoride-Induced Negative Differential Resistance in Nanopores: Experimental and Theoretical Characterization
dc.type	journal article	es_ES
dc.date.updated	2023-01-17T15:21:28Z
dc.identifier.doi	10.1021/acsami.1c18672
dc.identifier.idgrec	150901
dc.rights.accessRights	open access	es_ES