| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 179558 | Electrochemistry Communications | 2013 | 4 Pages |
Ring-disk microelectrodes are proposed to be applied in a double constant-current mode using simultaneously an irreversible and a reversible reaction at the SECM tip. This allows an independent determination of the tip-to-sample distance concomitantly with the visualization of the lateral electrochemical reactivity of the investigated sample surface. The principle feasibility is demonstrated using a large and topographically as well as electrochemically challenging model sample.
► Constant-current mode for the investigation of topography and electrochemical activity. ► Utilization of a reversible and irreversible redox species. ► Ring-disk electrodes for the independent detection of two different redox mediators. ► Constant-distance mode for large surface areas.
