Nanometer Scale Scanning Electrochemical Microscopy Instrumentation

Jiyeon Kim, Christophe Renault, Nikoloz Nioradze, Netzahualcoyotl Arroyo-Curras, Kevin C. Leonard, Allen J. Bard

Research output: Contribution to journalArticlepeer-review

Abstract

We report the crucial components required to perform scanning electrochemical microscopy (SECM) with nanometer-scale resolution. The construction and modification of the software and hardware instrumentation for nanoscale SECM are explicitly explained including (1) the LabVIEW code that synchronizes the SECM tip movement with the electrochemical response, (2) the construction of an isothermal chamber to stabilize the nanometer scale gap between the tip and substrate, (3) the modification of a commercial bipotentiostat to avoid electrochemical tip damage during SECM experiments, and (4) the construction of an SECM stage to avoid artifacts in SECM images. These findings enabled us to successfully build a nanoscale SECM, which can be utilized to map the electrocatalytic activity of individual nanoparticles in a typical ensemble sample and study the structure/reactivity relationship of single nanostructures.

Original languageEnglish (US)
Pages (from-to)10284-10289
Number of pages6
JournalAnalytical Chemistry
Volume88
Issue number20
DOIs
StatePublished - Oct 18 2016
Externally publishedYes

ASJC Scopus subject areas

  • Analytical Chemistry

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