Local cobalt electrodeposition using the scanning electrochemical microscope

Oscar De Abril*, Daniel Mandler, Patrick R. Unwin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

A scanning electrochemical microscope (SECM) has been applied to the local deposition of Co microstructures on Au. The method employs a Co microelectrode to generate a potential-controlled flux of the respective ions in an aqueous solution. The microelectrode was positioned at a precisely defined distance above a gold surface using the steady-state current for oxygen reduction. The optimum conditions for Co dissolution and deposition were identified from voltammetry and chronoamperometry. Applying these conditions in the SECM configuration facilitated the successful deposition of Co structures. The dissolution and uptake of Co on the Au surface was investigated using SECM double potential step chronoamperometry.

Original languageAmerican English
Pages (from-to)C71-C74
JournalElectrochemical and Solid-State Letters
Volume7
Issue number6
DOIs
StatePublished - 2004
Externally publishedYes

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