Nanofluidic Diode

Ivan Vlassiouk and Zuzanna S. Siwy*
Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697
Nano Lett., 2007, 7 (3), pp 552–556
DOI: 10.1021/nl062924b
Publication Date (Web): February 21, 2007
Copyright © 2007 American Chemical Society
*

In papers with more than one author, the asterisk indicates the name of the author to whom inquiries about the paper should be addressed.

Abstract

Abstract Image

We present a nanofluidic diode that at voltage range −5 to +5 V rectifies ion current with degrees of rectification reaching several hundreds. The diode is based on a single asymmetric nanopore whose surface was patterned so that a sharp boundary between positively and negatively charged regions is created. This boundary defines a zone that is enriched with positive and negative ions or creates a depletion zone. The principle of operation of the nanofluidic diode is analogous to that of a bipolar semiconductor diode.

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History

  • Published In Issue March 14, 2007
  • Received December 12, 2006
    Revised Manuscript Received January 11, 2007

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