Journal
NANO LETTERS
Volume 9, Issue 11, Pages 3853-3859Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl9020683
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- NIST
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Rectification of the ionic current flowing through nanotubes embedded in a polymeric membrane is achieved by selective adsorption of polycations to the nanotubes' mouths. A one-dimensional model of ionic flux through a nanotube with charged entrance regions qualitatively describes current-voltage curves before and after polycation exposure; reversal potential measurements confirm that charge reversal takes place upon polycation adsorption. The inherent simply of this electrostatic approach makes it attractive in membrane and nanofluidic applications employing rectification.
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