Deconvolution in Potentiometric SECM

András Kiss, Géza Nagy

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

One of the main limitations of potentiometric scanning electrochemical microscopy (SECM) is the large RC time constant, and therefore long response time of the cell. A relatively long equilibration interval has to be allowed before sampling at each data acquisition point to reach equilibrium potential, and avoid image distortion. In this paper, we present a method to get high-quality, low distortion images, without increasing scan time. The convolution function causing the distortion can be expressed from the response function of the potentiometric cell. A model system was studied with high scan rate, then the image was deconvoluted using the inverse of the potentiometric response function to calculate the equilibrium potential for each data acquisition point from the respective observed values.

Original languageEnglish
Pages (from-to)587-590
Number of pages4
JournalElectroanalysis
Volume27
Issue number3
DOIs
Publication statusPublished - Mar 1 2015

Keywords

  • Deconvolution
  • Potentiometry
  • Scanning electrochemical microscope

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry

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