Nanofluidics: Convective Delivery of Electroactive Species to Annular Nanoband Electrodes Embedded in Nanocapillary-Array Membranes (Small 1/2013)

Authors

  • Larry R. Gibson II,

    1. Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
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  • Sean P. Branagan,

    1. Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
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  • Paul W. Bohn

    Corresponding author
    1. Department of Chemical and Biomolecular Engineering, Department of Chemistry and Biochemistry, 318 Stinson-Remick Hall, University of Notre Dame, Notre Dame, IN 46556, USA
    • Department of Chemical and Biomolecular Engineering, Department of Chemistry and Biochemistry, 318 Stinson-Remick Hall, University of Notre Dame, Notre Dame, IN 46556, USA.
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Abstract

original image

The image illustrates the electrochemical conversion of an electroactive species (red to green) within a single cylindrical nanochannel. In this work, a small electrical voltage is applied between a pair of annular nanoband electrodes, which drives both the electrochemical reaction and electro-osmotic flow. This tight coupling of reactivity and the convective flow rate significantly enhances the mass transportlimited electrochemical current. P. W. Bohn and co-workers demonstrate on page 90 that an array containing several hundred of these nanoreactors creates a unique high-throughput device that can outperform a comparable microband electrode/microchannel structure.

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