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

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.