title: Snapshot voltammetry using a triangular bipolar microelectrode.
abstract: In this paper, we report a new electroanalytical technique we call snapshot voltammetry. This method combines the properties of bipolar electrodes with electrogenerated chemiluminescence (ECL) to provide a means for recording optical voltammograms in a single micrograph. In essence, the information in a snapshot voltammogram is contained in the spatial domain rather than in the time domain, which is the case for conventional voltammetry. The use of a triangle-shaped bipolar electrode stabilizes the interfacial potential difference along its length. Basic electrochemical parameters extracted from snapshot voltammograms are in good agreement with those obtained by conventional voltammetry. Although not explicitly demonstrated in this paper, this method offers the possibility of using arrays of bipolar electrodes to obtain numerous snapshot voltammograms simultaneously.
authors.affiliation: Department of Chemistry and Biochemistry, Center for Electrochemistry, and the Center for Nano- and Molecular Science and Technology, The University of Texas at Austin, 1 University Station, A5300, Austin, Texas 78712-0165, USA.
authors.forename: Byoung-Yong
authors.initials: BY
authors.lastname: Chang
authors.forename: François
authors.initials: F
authors.lastname: Mavré
authors.forename: Kwok-Fan
authors.initials: KF
authors.lastname: Chow
authors.forename: John A
authors.initials: JA
authors.lastname: Crooks
authors.forename: Richard M
authors.initials: RM
authors.lastname: Crooks