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Volume 193, 2016
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Single-molecule electrochemistry in nanochannels: probing the time of first passage

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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.

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Article information


Submitted
11 Apr 2016
Accepted
19 Apr 2016
First published
21 Apr 2016

Faraday Discuss., 2016,193, 41-50
Article type
Paper

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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