ArticleScientific reports2015
Ionic transport through sub-10 nm diameter hydrophobic high-aspect ratio nanopores: experiment, theory and simulation.
Article in Scientific reports, 2015. 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.
- Exploring the influence of pore shape on conductance and permeation.Biophysical journal · 2024Article
- Article
- Anomalous ionic transport in tunable angstrom-size water films on silica.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Fluids and Electrolytes under Confinement in Single-Digit Nanopores.Chemical reviews · 2023Review
- On the Choice of Different Water Model in Molecular Dynamics Simulations of Nanopore Transport Phenomena.Membranes · 2022Article
- Enhanced sieving from exfoliated MoSNature materials · 2019Article
- Interfacial transport with mobile surface charges and consequences for ionic transport in carbon nanotubes.The European physical journal. E, Soft matter · 2018Article
- Scaling Behavior for Ionic Transport and its Fluctuations in Individual Carbon Nanotubes.Physical review letters · 2016Article
Corrections and comments
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Authors and funding
10 authors.
Funding
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Abstract
Fundamental understanding of ionic transport at the nanoscale is essential for developing biosensors based on nanopore technology and new generation high-performance nanofiltration membranes for separation and purification applications. We study here ionic transport through single putatively neutral hydrophobic nanopores with high aspect ratio (of length L = 6 μm with diameters ranging from 1 to 10 nm) and with a well controlled cylindrical geometry. We develop a detailed hybrid mesoscopic theoretical approach for the electrolyte conductivity inside nanopores, which considers explicitly ion advection by electro-osmotic flow and possible flow slip at the pore surface. By fitting the experimental conductance data we show that for nanopore diameters greater than 4 nm a constant weak surface charge density of about 10(-2) C m(-2) needs to be incorporated in the model to account for conductance plateaus of a few pico-siemens at low salt concentrations. For tighter nanopores, our analysis leads to a higher surface charge density, which can be attributed to a modification of ion solvation structure close to the pore surface, as observed in the molecular dynamics simulations we performed.
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Registered trials
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