ArticleBiomicrofluidics2016
Geometrical control of ionic current rectification in a configurable nanofluidic diode.
Article in Biomicrofluidics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Toward an ion-based large-scale integrated circuit: design, simulation, and integration.Communications engineering · 2025Article
- Nanoparticle-blockage-enabled rapid and reversible nanopore gating with tunable memory.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- Short channel effects on electrokinetic energy conversion in solid-state nanopores.Scientific reports · 2017Article
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Authors and funding
4 authors.
Funding
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Abstract
Control of ionic current in a nanofluidic system and development of the elements analogous to electrical circuits have been the subject of theoretical and experimental investigations over the past decade. Here, we theoretically and experimentally explore a new technique for rectification of ionic current using asymmetric 2D nanochannels. These nanochannels have a rectangular cross section and a stepped structure consisting of a shallow and a deep side. Control of height and length of each side enables us to obtain optimum rectification at each ionic strength. A 1D model based on the Poisson-Nernst-Planck equation is derived and validated against the full 2D numerical solution, and a nondimensional concentration is presented as a function of nanochannel dimensions, surface charge, and the electrolyte concentration that summarizes the rectification behavior of such geometries. The rectification factor reaches a maximum at certain electrolyte concentration predicted by this nondimensional number and decays away from it. This method of fabrication and control of a nanofluidic diode does not require modification of the surface charge and facilitates the integration with lab-on-a-chip fluidic circuits. Experimental results obtained from the stepped nanochannels are in good agreement with the 1D theoretical model.
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Registered trials
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