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Science 4 October 1991:
Vol. 254. no. 5028, pp. 68 - 74
DOI: 10.1126/science.254.5028.68
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Articles

Chemical Imaging of Surfaces with the Scanning Electrochemical Microscope

ALLEN J. BARD 1, FU-REN F. FAN 1, DAVID T. PIERCE 1, PATRICK R. UNWIN 1, DAVID O. WIPF 1, and FEIMENG ZHOU 1

1 Department of Chemistry and Biochemistry, University of Texas, Austin, TX 78712

Scanning electrochemical microscopy is a scanning probe technique that is based on faradaic current changes as a small electrode is moved across the surface of a sample. The images obtained depend on the sample topography and surface reactivity. The response of the scanning electrochemical microscope is sensitive to the presence of conducting and electroactive species, which makes it useful for imaging heterogeneous surfaces. The principles and instrumentation used to obtain images and surface reaction-kinetic information are discussed, and examples of applications to the study of electrodes, minerals, and biological samples are given.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Direct Electrochemical Measurements Inside a 2000 Angstrom Thick Polymer Film by Scanning Electrochemical Microscopy.
M. V. Mirkin, F.-R. F. Fan, and A. J. Bard (1992)
Science 257, 364-366
   Abstract »    PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)