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Published on: July 15, 2021
Quantitative framework for the definition of planar spatial resolution in scanning electrochemical microscopy
Geonwoo Park1, Haesung Oh1, Yeonsu Kim1
1Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea.
Abstract:
This study presents a set of quantitative criteria for the definition of planar spatial resolution in scanning electrochemical microscopy (SECM) imaging using an effective diffusion ellipsoid (EDE) model. Experiments and simulations confirm that smaller electrodes improve imaging resolution, and the resolution-step-size equivalence holds across both feedback and generation-collection modes. The finding reported here enables the establishment of standardized conditions for surface activity mapping by SECM.
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