Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 27, Issue -, Pages 29-33Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2012.10.034
Keywords
SECM; AFM; Conical electrode; Approach curve; Diffusion control
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Funding
- Austrian Research Advancement Agency (COMET programme)
- Lower Austria government
- University of Bern
- Swiss National Science Foundation
- Hanse-Wissenschaftskolleg, Delmenhorst, Germany
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The diffusion controlled response of conical AFM-SECM probes is presented. Accurate expressions are given which describe the dependence of the probe current on the tip radius and aspect ratio, insulating sheath radius and tip-substrate distance for positive feedback and hindered diffusion. A procedure is proposed to determine the tip dimensions from the experimental approach curves. (c) 2012 Elsevier B.V. All rights reserved.
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