Premium
Investigation of the performance of microelectrodes with micrometer size structural diameters
Author(s) -
Tian Min,
Jing Xinli
Publication year - 1997
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140090912
Subject(s) - microelectrode , cyclic voltammetry , potassium ferricyanide , materials science , differential pulse voltammetry , electrode , ferricyanide , micrometer , dielectric spectroscopy , scanning electron microscope , analytical chemistry (journal) , electrochemistry , chemistry , composite material , inorganic chemistry , optics , chromatography , physics
A microelectrode was fabricated by coating a silicon dioxide film on the Pt wire surface. The fabricated electrode was then characterized by scanning electron micrographs, energy spectrum, cyclic voltammetry, differential pulse voltammetry and AC impedance spectroscopy. A welldefined sigmoidal response for reduction of potassium ferricyanide showed that the electrode has a high mass transport rate, which is the feature of the microelectrode. The micrometer scale size permits it to be used in vivo, and the absence of epoxy resin (as insulator material) also makes the presented microdisk electrode suitable for electroanalysis in nonaqueous media.