Publication Citation (NIST authors in bold)
Authors:	Scruggs, N. R., Robertson, J. W., Kasianowicz, J. J., Migler, K. D.
Title:	Rectification of the Ionic Current through Carbon Nanotubes by Electrostatic Assembly of Polyelectrolytes
Published:	September 16, 2009
Abstract:	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.
Citation:	Nano Letters
Volume:	ASAP
Issue:
Keywords:	ionic, rectification, nanotubes, nanofluidics
Research Area:	Nanomaterials;