The diffusive mass transport of individual redox molecules was probed experimentally in microfabricated nanogap electrodes. The residence times for molecules inside a well-defined detection volume were extracted and the resulting distribution was compared with quantitative analytical predictions from random-walk theory for the time of first passage. The results suggest that a small number of strongly adsorbing sites strongly influence mass transport at trace analyte levels.
|Publication status||Published - 21 Apr 2016|
|Event||Faraday Discussion on Single Entity Electrochemistry 2016 - York, United Kingdom|
Duration: 31 Aug 2016 → 2 Sep 2016
Kang, S., Nieuwenhuis, A. F., Mathwig, K., Mampallil, D., Kostiuchenko, Z. A., & Lemay, S. G. (2016). Single-molecule electrochemistry in nanochannels: probing the time of first passage. Faraday discussions, 193, 41-50. https://doi.org/10.1039/c6fd00075d