Microelectrodes, printed as an array on the surface of a silicon chip, generate chemically active species in a solution of electrolyte held between the electrode array and a glass plate. The active species induce chemical change in molecules coupled to the surface of the glass plate, which is separated from the electrode array by a gap of several micrometers. This paper explores the nature and pattern of the induced chemical change. The patterning is discussed with respect to the electrolyte composition and the magnitude and duration of current applied to the microelectrodes. We show that under suitable conditions the active species is confined to micrometer-sized features and diffusion does not obscure the surface pattern produced.

Original languageEnglish
Pages (from-to)1590-1596
Number of pages7
JournalAnalytical Chemistry
Issue number7
Publication statusPublished - 1 Apr 2002

ASJC Scopus subject areas

  • Analytical Chemistry


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