Local feedback mode of scanning electrochemical microscopy for electrochemical characterization of one-dimensional nanostructure: theory and experiment with nanoband electrode as model substrate

Analytical Chemistry
Hui XiongS Amemiya

Abstract

Local feedback mode is introduced as a novel operation mode of scanning electrochemical microscopy (SECM) for electrochemical characterization of a single one-dimensional (1D) nanostructure, for example, a wire, rod, band, and tube with 1-100-nm width and micrometer to centimeter length. To demonstrate the principle, SECM feedback effects under diffusion limitation were studied theoretically and experimentally with a disk probe brought near a semi-infinitely long band electrode as a geometrical model for a conductive 1D nanostructure. As the band becomes narrower than the disk diameter, the feedback mechanism for tip current enhancement is predicted to change from standard positive feedback mode, to positive local feedback mode, and then to negative local feedback mode. The negative local feedback effect is the only feedback effect that allows observation of a 1D nanostructure without serious limitations due to small lateral dimension, available tip size, or finite electron-transfer rate. In line-scan and approach-curve experiments, an unbiased Pt band electrode with 100-nm width and 2.6-cm length was detectable in negative local feedback mode, even using a 25-microm-diameter disk Pt electrode. Using a 2-microm-diameter probe, ...Continue Reading

References

Jun 1, 1989·Analytical Chemistry·K A Davis, T R Leary
Mar 29, 2000·Accounts of Chemical Research·A C TempletonR W Murray
May 3, 2002·Analytical Chemistry·Julie V MacphersonPatrick R Unwin
Dec 18, 2002·Accounts of Chemical Research·Phaedon Avouris
May 1, 2004·Annual Review of Physical Chemistry·Mattias KarlssonOwe Orwar
Jun 4, 2004·Journal of the American Chemical Society·Peter LiljerothBernadette M Quinn
Jul 2, 2004·Analytical Chemistry·Catherine CombellasFrédéric Kanoufi
Jun 17, 2005·Analytical Chemistry·Ryan J White, Henry S White
Oct 22, 2005·Physical Chemistry Chemical Physics : PCCP·Joachim UfheilJürgen Heinze

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Citations

Jul 21, 2006·Analytical and Bioanalytical Chemistry·Shigeru AmemiyaDarrick A Gross
Dec 24, 2013·Electrochimica Acta·Shigeru AmemiyaRyoichi Ishimatsu
Sep 8, 2016·Accounts of Chemical Research·Shigeru AmemiyaJiyeon Kim
Oct 11, 2016·Faraday Discussions·Yixian WangNongjian Tao
Oct 28, 2011·Physical Chemistry Chemical Physics : PCCP·Michael V MirkinYixian Wang
Jun 13, 2009·Analytical Chemistry·Eunkyoung KimShigeru Amemiya
Mar 14, 2009·Analytical Chemistry·François O LaforgeMichael V Mirkin
May 22, 2010·Analytical Chemistry·Frédérique DeissFrédéric Kanoufi
Feb 2, 2010·Analytical Chemistry·Jiyeon KimShigeru Amemiya
Nov 6, 2012·Analytical Chemistry·Stephen M OjaBo Zhang

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