ArticleThe journal of physical chemistry. A2019
Nanoscale Fluid Vortices and Nonlinear Electroosmotic Flow Drive Ion Current Rectification in the Presence of Concentration Gradients.
Article in The journal of physical chemistry. A, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Multifactorial Regulation Mechanisms of Negative Differential Resistance in Macropores.Molecules (Basel, Switzerland) · 2026Article
- Quantifying and Utilizing Electroosmotic Flow for Mechanical Measurements with the Scanning Ion Conductance Microscope.Analytical chemistry · 2025Article
- Mechanistic Study of the Conductance and Enhanced Single-Molecule Detection in a Polymer-Electrolyte Nanopore.ACS nanoscience Au · 2023Article
- Charge Mapping ofAnalytical chemistry · 2023Article
- The New Era of High-Throughput Nanoelectrochemistry.Analytical chemistry · 2023Review
- Electrodiffusioosmosis induced negative differential resistance in micro-to-millimeter size pores through a graphene/copper membrane.Nanoscale advances · 2022Article
- Nanobubble-controlled nanofluidic transport.Science advances · 2020Article
- Macromolecular Crowding Enhances the Detection of DNA and Proteins by a Solid-State Nanopore.Nano letters · 2020Article
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
Ion current rectification (ICR) is a transport phenomenon in which an electrolyte conducts unequal currents at equal and opposite voltages. Here, we show that nanoscale fluid vortices and nonlinear electroosmotic flow (EOF) drive ICR in the presence of concentration gradients. The same EOF can yield negative differential resistance (NDR), in which current decreases with increasing voltage. A finite element model quantitatively reproduces experimental ICR and NDR recorded across glass nanopipettes under concentration gradients. The model demonstrates that spatial variations of electrical double layer properties induce the nanoscale vortices and nonlinear EOF. Experiments are performed in conditions directly related to scanning probe imaging and show that quantitative understanding of nanoscale transport under concentration gradients requires accounting for EOF. This characterization of nanopipette transport physics will benefit diverse experimentation, pushing the resolution limits of chemical and biophysical recordings.
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Registered trials
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