Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/148931
Title: | Confinement-controlled rectification in a geometric nanofluidic diode |
Author: | Dal Cengio, Sara Pagonabarraga Mora, Ignacio |
Keywords: | Nanofluids Díodes Nanofluids Diodes |
Issue Date: | 6-Jul-2019 |
Publisher: | American Institute of Physics |
Abstract: | 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. |
Note: | Reproducció del document publicat a: https://doi.org/10.1063/1.5108723 |
It is part of: | Journal of Chemical Physics, 2019, vol. 151, p. 044707 |
URI: | http://hdl.handle.net/2445/148931 |
Related resource: | https://doi.org/10.1063/1.5108723 |
ISSN: | 0021-9606 |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) |
Files in This Item:
File | Description | Size | Format | |
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694661.pdf | 3.4 MB | Adobe PDF | View/Open |
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