Issue 3, 2017

Tracking motion trajectories of individual nanoparticles using time-resolved current traces

Abstract

Single nanoparticle (NP) electrochemical measurements are widely described, both theoretically and experimentally, as they enable visualization of the electrochemical signal of a single NP that is masked in ensemble measurements. However, investigating the behavior of individual NPs using electrochemical signals remains a significant challenge. Here we report experiments and simulations demonstrating that multiple distinct motion trajectories could be discerned from time-resolved current traces by dynamic Monte Carlo simulations. We show that continuous monitoring and quantification of electrochemical oxidation of individual AgNPs using a low-noise electrochemical measurement platform produce significantly distinguished current traces due to the size-dependent motions of AgNPs. Our findings offer a view of the electrochemical signals of individual NPs that are largely different from that in the literature, and underscore the significance of motion behaviors in single NP electrochemistry.

Graphical abstract: Tracking motion trajectories of individual nanoparticles using time-resolved current traces

Supplementary files

Article information

Article type
Edge Article
Submitted
13 okt 2016
Accepted
11 dec 2016
First published
12 dec 2016
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY license

Chem. Sci., 2017,8, 1854-1861

Tracking motion trajectories of individual nanoparticles using time-resolved current traces

W. Ma, H. Ma, J. Chen, Y. Peng, Z. Yang, H. Wang, Y. Ying, H. Tian and Y. Long, Chem. Sci., 2017, 8, 1854 DOI: 10.1039/C6SC04582K

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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