Volume 193, 2016

Single-molecule electrochemistry in nanochannels: probing the time of first passage

Abstract

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.

Associated articles

Article information

Article type
Paper
Submitted
11 Apr 2016
Accepted
19 Apr 2016
First published
21 Apr 2016

Faraday Discuss., 2016,193, 41-50

Single-molecule electrochemistry in nanochannels: probing the time of first passage

S. Kang, A. F. Nieuwenhuis, K. Mathwig, D. Mampallil, Z. A. Kostiuchenko and S. G. Lemay, Faraday Discuss., 2016, 193, 41 DOI: 10.1039/C6FD00075D

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