Rectification of ionic current in a nanofluidic diode.
We demonstrate rectification of ionic transport in a nanofluidic diode fabricated by introducing a surface charge discontinuity in a nanofluidic channel. Device current-voltage (I-V) characteristics agree qualitatively with a one-dimensional model at moderate to high ionic concentrations. This study illustrates ionic flow control using surface charge patterning in nanofluidic channels under high bias voltages.
Karnik
Rohit
R
Department of Mechanical Engineering, University of California, Berkeley, California 94720, USA.
Duan
Chuanhua
C
Castelino
Kenneth
K
Daiguji
Hirofumi
H
Majumdar
Arun
A