Theory and experiments of microelectrodes performing as concentration probes within microfluidic channels with high temporal resolution

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TitleTheory and experiments of microelectrodes performing as concentration probes within microfluidic channels with high temporal resolution
Publication TypeJournal Article
Year of Publication2011
AuthorsAmatore, C, Lemmer C, Perrodin P, Sella C, Thouin L
JournalElectrochemistry Communications
Volume13
Issue12
Pagination1459-1461
Date Published9/2011
ISSN13882481
Abstract

The performances of a single microband electrode probing within a microfluidic channel, the passage of a concentration front of electroactive species, were investigated. Optimal conditions in terms of device geometries and hydrodynamic flow were delineated to allow amperometric detections with high temporal resolution. These conditions correspond to specific regimes reflecting the complex coupling between diffusional and convective transport. Experimental current responses were in excellent agreement with the theoretical predictions. A new concept of microchannel electrodes acting as concentration probes was thus successfully demonstrated

DOI10.1016/j.elecom.2011.09.019
Short TitleElectrochemistry Communications
Unit: 
UMR 8640