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Kitazumi Y, Hamamoto K, Noda T, et al. Fabrication and Characterization of Ultrathin-ring Electrodes for Pseudo-steady-state Amperometric Detection. Anal Sci. 2015;31(7):603-7doi: 10.2116/analsci.31.603.
Kitazumi, Y., Hamamoto, K., Noda, T., Shirai, O., & Kano, K. (2015). Fabrication and Characterization of Ultrathin-ring Electrodes for Pseudo-steady-state Amperometric Detection. Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 31(7), 603-7. https://doi.org/10.2116/analsci.31.603
Kitazumi, Yuki, et al. "Fabrication and Characterization of Ultrathin-ring Electrodes for Pseudo-steady-state Amperometric Detection." Analytical sciences : the international journal of the Japan Society for Analytical Chemistry vol. 31,7 (2015): 603-7. doi: https://doi.org/10.2116/analsci.31.603
Kitazumi Y, Hamamoto K, Noda T, Shirai O, Kano K. Fabrication and Characterization of Ultrathin-ring Electrodes for Pseudo-steady-state Amperometric Detection. Anal Sci. 2015;31(7):603-7. doi: 10.2116/analsci.31.603. PMID: 26165281.
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Anal Sci. 2015;31(7):603-7. doi: 10.2116/analsci.31.603.

Fabrication and Characterization of Ultrathin-ring Electrodes for Pseudo-steady-state Amperometric Detection.

Analytical sciences : the international journal of the Japan Society for Analytical Chemistry

Yuki Kitazumi, Katsumi Hamamoto, Tatsuo Noda, Osamu Shirai, Kenji Kano

Affiliations

  1. Division of Applied Life Science, Graduated School of Agriculture, Kyoto University.

PMID: 26165281 DOI: 10.2116/analsci.31.603

Abstract

The fabrication of ultrathin-ring electrodes with a diameter of 2 mm and a thickness of 100 nm is established. The ultrathin-ring electrodes provide a large density of pseudo-steady-state currents, and realize pseudo-steady-state amperometry under quiescent conditions without a Faraday cage. Under the limiting current conditions, the current response at the ultrathin-ring electrode can be well explained by the theory of the microband electrode response. Cyclic voltammograms at the ultrathin-ring electrode show sigmoidal characteristics with some hysteresis. Numerical simulation reveals that the hysteresis can be ascribed to the time-dependence of pseudo-steady-state current. The performance of amperometry with the ultrathin-ring electrode has been verified in its application to redox enzyme kinetic measurements.

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