TITLE

Nanofluidic diode in a suspended nanoparticle crystal

AUTHOR(S)
Yinhua Lei; Wei Wang; Wengang Wu; Zhihong Li
PUB. DATE
June 2010
SOURCE
Applied Physics Letters;6/28/2010, Vol. 96 Issue 26, p263102
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This work demonstrates a nanofluidic diode in a suspended nanoparticle crystal (S-NPC) constructed by sequentially packing hydroxyl-modified and amino-modified nanoparticles into a microfabricated silicon micropore. Current rectification in this nanofluidic diode comes from the asymmetric surface charge polarities along the nanochannel network inside the nanoparticle crystal. The maximum current rectification ratio was about 48 for the 173 nm S-NPC nanofluidic diode and the maximum forward current was larger than 700 nA at 3 V bias. Since it is inexpensive, easy to manufacture, and the surface charge properties are easily formed, having excellent electrical performance, this S-NPC nanofluidic diode holds application for biosensors.
ACCESSION #
51975728

 

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