| Pressure-driven ionic transport through nanochannels with inhomogenous charge distributions. | |
| | |
MedLine Citation:
|
PMID: 19735115 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
|
The effect of spatially inhomogeneous fixed charge distributions on the pressure-driven transport of ions through cylindrical nanopores have been investigated theoretically by means of an approximate version of the Poisson-Nernst-Planck model that can be used with confidence for moderately charged nanopores with radius smaller than the Debye screening length of the system. Salt rejection rate has been computed as a function of the applied pressure difference for various one-dimensional (1D) unipolar charge distributions and has been compared with that obtained for a homogeneously charged nanochannel with an identical average volume charge density. The ion rejection capabilities of charged nanopores can be optimized by an appropriate distribution of the fixed charge concentration. When ions are forced to enter the nanopores by the end with the lowest fixed charged concentration, the salt rejection rate exhibits a nonmonotonous variation with the applied pressure. This phenomenon has been attributed to the influence of the inhomogeneous charge distribution on the electric field that arises spontaneously so as to maintain the electroneutrality within the nanopore. |
| | |
Authors:
|
Anthony Szymczyk; Haochen Zhu; B?atrice Balannec |
Related Documents
:
|
15827345 - Differential effects of salt on renal hemodynamics and potential pressure transmission ... 657435 - Whole body vascular reactivity during the development of deoxycorticosterone acetate hy... 8021475 - Erythrocyte membrane microviscosity and blood pressure in rats with salt-induced and sp... 5839285 - Effects of chronic excess salt ingestion. further demonstration that genetic factors in... 21555205 - Phonation instability flow in excised canine larynges. 17407025 - Topical application of isosorbide dinitrate in patients with persistent constipation af... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Langmuir : the ACS journal of surfaces and colloids Volume: 26 ISSN: 1520-5827 ISO Abbreviation: Langmuir Publication Date: 2010 Jan |
Date Detail:
|
Created Date: 2010-01-13 Completed Date: 2010-03-11 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9882736 Medline TA: Langmuir Country: United States |
Other Details:
|
Languages: eng Pagination: 1214-20 Citation Subset: - |
Affiliation:
|
Universit? Europ?enne de Bretagne, France. anthony.szymczyk@univ-rennes1.fr |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Polypeptide Nanoribbon Hydrogels Assembled through Multiple Supramolecular Interactions.
Next Document: Patterning of Single-Walled Carbon Nanotube Films on Flexible, Transparent Plastic Substrates.