Effects of Electroosmotic Flow on Ionic Current Rectification in Conical Nanopores

Title
Effects of Electroosmotic Flow on Ionic Current Rectification in Conical Nanopores
Author(s)
주상우아이[아이]장밍칸체이니[체이니]스즈첸
Keywords
SOLID-STATE NANOPORE; ELECTROCHEMICAL TRANSPORT-PROPERTIES; TUNABLE NANOFLUIDIC DIODE; CONE-SHAPED NANOPORE; ELECTROPHORETIC MOTION; SPHERICAL-PARTICLE; DOUBLE-LAYERS; NARROW PORES; CHARGE; NANOCHANNELS
Issue Date
201003
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF PHYSICAL CHEMISTRY C, v.114, no.9, pp.3883 - 3890
Abstract
The effects of electroosmotic flow (EOF) oil the ionic current rectification (ICR) phenomenon in conical nanopores,ire studied comprehensively With use of a continuum model, composed of Nernst-Planck equations for the ionic concentrations, the Poisson equation for the electric potential, and Navier-Stokes equations for the flow field. It is found that the preferential Current direction of a negatively charged nanopore is toward the base (tip) under a relatively high (low) kappa R(1), the ratio of the tip radius size to the Debye length. The direction also changes with the charge polarity of the nanopore. The EOF effect on the ionic Current rectification ratio in a conical nanopore becomes noticeable at an intermediate kappa R(1) and Surface charge density of the nanopore, meanwhile increasing significantly with the applied voltage.
URI
http://hdl.handle.net/YU.REPOSITORY/22785http://dx.doi.org/10.1021/jp911773m
ISSN
1932-7447
Appears in Collections:
공과대학 > 기계공학부 > Articles
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