Ali, Mubarak ; Ramirez, Patricio ; Nasir, Saima ; Nguyen, Quoc-Hung ; Ensinger, Wolfgang ; Mafe, Salvador (2014)
Nanoparticle-induced rectification in a single cylindrical nanopore: Net currents from zero time-average potentials.
In: Applied Physics Letters, 104 (4)
doi: 10.1063/1.4863511
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Rectification in nanopores is usually achieved by a fixed asymmetry in the pore geometry and charge distribution. We show here that nanoparticle blocking of a cylindrical pore induces rectifying properties that can support significant net currents with zero time-average potentials. To describe experimentally this effect, the steady-state current-voltage curves of a single nanopore are obtained for different charge states and relative sizes of the pore and the charged nanoparticles, which are present only on one side. The rectification phenomena observed can find applications in the area of nanofluidics and involves physical concepts that are also characteristic of the blocking of protein ion channels by ionic drugs.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Ali, Mubarak ; Ramirez, Patricio ; Nasir, Saima ; Nguyen, Quoc-Hung ; Ensinger, Wolfgang ; Mafe, Salvador |
| Art des Eintrags: | Bibliographie |
| Titel: | Nanoparticle-induced rectification in a single cylindrical nanopore: Net currents from zero time-average potentials |
| Sprache: | Englisch |
| Publikationsjahr: | Januar 2014 |
| Verlag: | AIP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Applied Physics Letters |
| Jahrgang/Volume einer Zeitschrift: | 104 |
| (Heft-)Nummer: | 4 |
| DOI: | 10.1063/1.4863511 |
| Kurzbeschreibung (Abstract): | Rectification in nanopores is usually achieved by a fixed asymmetry in the pore geometry and charge distribution. We show here that nanoparticle blocking of a cylindrical pore induces rectifying properties that can support significant net currents with zero time-average potentials. To describe experimentally this effect, the steady-state current-voltage curves of a single nanopore are obtained for different charge states and relative sizes of the pore and the charged nanoparticles, which are present only on one side. The rectification phenomena observed can find applications in the area of nanofluidics and involves physical concepts that are also characteristic of the blocking of protein ion channels by ionic drugs. |
| Freie Schlagworte: | Nanoparticles, Rectification, Nanoporous materials, Charged currents, Ion channels, Electroosmosis, Nanofluidics, Electrolytes, Electrical properties, Electrostatics |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialanalytik 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 31 Jan 2014 09:50 |
| Letzte Änderung: | 20 Jun 2014 12:24 |
| PPN: | |
| Sponsoren: | M.A., S.N., Q.H.N., and W.E. acknowledge the Beilstein-Institut, Frankfurt/Main, Germany, within the research collaboration NanoBiC. , P.R. and S.M. acknowledge the Ministry of Economy and Competitiveness (project MAT2012-32084) and the Generalitat Valenciana (project PROMETEO/GV/0069). |
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