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Nanofluidics: Convective Delivery of Electroactive Species to Annular Nanoband Electrodes Embedded in Nanocapillary‐Array Membranes (Small 1/2013)
Author(s) -
Gibson Larry R.,
Branagan Sean P.,
Bohn Paul W.
Publication year - 2013
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201370003
Subject(s) - microchannel , nanoreactor , electrode , electrochemistry , materials science , nanofluidics , membrane , nanotechnology , microfluidics , voltage , optoelectronics , chemical engineering , chemistry , nanoparticle , physics , biochemistry , engineering , quantum mechanics
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.