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Appl. Phys. Lett. 96, 263102 (2010); http://dx.doi.org/10.1063/1.3456563 (3 pages)

Nanofluidic diode in a suspended nanoparticle crystal

Yinhua Lei1, Wei Wang1,2, Wengang Wu1,2, and Zhihong Li1,2

1Institute of Microelectronics, Peking University, Beijing 100871, People’s Republic of China
2National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Peking University, Beijing 100871, People’s Republic of China

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(Received 8 May 2010; accepted 3 June 2010; published online 28 June 2010)

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.

© 2010 American Institute of Physics

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KEYWORDS and PACS

PACS

  • 47.61.Fg

    Flows in micro-electromechanical systems (MEMS) and nano-electromechanical systems (NEMS)

  • 07.10.Cm

    Micromechanical devices and systems

  • 47.85.Np

    Fluidics

ARTICLE DATA

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

For access to fully linked references, you need to log in.
    D. Stein, M. Kruithof, and C. Dekker, Appl. Phys. Lett. 93, 035901 (2004).

    D. Constantin and Z. S. Siwy, Phys. Rev. E 76, 041202 (2007).

    Z. Chen, Y. S. Wang, W. Wang, and Z. H. Li, Appl. Phys. Lett. 95, 102105 (2009)APPLAB000095000010102105000001.


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