Scan-Rate-Dependent Ion Current Rectification and Rectification Inversion in Charged Conical Nanopores
作者： Dmitry Momotenko , Hubert H. Girault
DOI: 10.1021/JA2048368
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摘要: Herein we report a theoretical study of diode-like behavior negatively charged (e.g., glass or silica) nanopores at different potential scan rates (1–1000 V·s–1). Finite element simulations were used to determine current–voltage characteristics conical various electrolyte concentrations. This demonstrates that significant changes in rectification can be observed high because the mass transport ionic species appears sluggish on time scale voltage scan. In particular, it explains influence rate nanopore rectifying properties cases classical rectification, inversion, and “transition” domain where direction could modulated according applied rate.
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