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Advanced Materials

Single Electron Transistor in Aqueous Media

Authors

  • Chichao Yu,

    1. Chemical and Biomolecular Engineering, Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln NE 68588, USA
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  • Seung-Woo Lee,

    1. Chemical and Biomolecular Engineering, Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln NE 68588, USA
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  • Jason Ong,

    1. Chemical and Biomolecular Engineering, Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln NE 68588, USA
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  • David Moore,

    1. Chemical and Biomolecular Engineering, Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln NE 68588, USA
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  • Ravi F. Saraf

    Corresponding author
    1. Chemical and Biomolecular Engineering, Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln NE 68588, USA
    2. Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln NE 68588, USA
    • Chemical and Biomolecular Engineering, Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln NE 68588, USA.
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Abstract

A gold nanoparticle necklace array spanning a ∼30-micrometer-wide channel shows a robust coulomb blockade effect at room temperature with a threshold of 1V in air. When this device is operated in the aqueous solution, a gain of ∼130 fold in conductance is obtained in electrochemical gating, significantly higher than other nanomaterial-based electrochemical transistors.

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