Characterization of Nanoscaled Interdigitated Palladium Electrodes of Various Dimensions in KCl Solutions

Nanoscaled interdigitated electrodes (IDEs) were developed for the purpose of being used as miniature and sensitive affinity biosensors. IDEs with palladium as the electrode material on a SiO2 substrate were made with electrode widths and spacings ranging from 550 nm down to 250 nm. These sensors we...

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Published inElectroanalysis (New York, N.Y.) Vol. 13; no. 3; pp. 204 - 211
Main Authors Laureyn, W., Van Gerwen, P., Suls, J., Jacobs, P., Maes, G.
Format Journal Article
LanguageEnglish
Published Weinheim VCH Verlagsgesellschaft mbH 01.03.2001
Subjects
Impedimetrical characterization
Interdigitated electrodes
Nanoscaled electrodes
Palladium
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Summary:Nanoscaled interdigitated electrodes (IDEs) were developed for the purpose of being used as miniature and sensitive affinity biosensors. IDEs with palladium as the electrode material on a SiO2 substrate were made with electrode widths and spacings ranging from 550 nm down to 250 nm. These sensors were theoretically modeled, enabling the prediction of their impedimetric response in KCl solutions. The strength of the theoretical model was proven by a characterization of IDEs of various dimensions in KCl solutions of different concentrations. The results demonstrate a quite reproducible behavior and a correlation between the impedimetric response in KCl solutions and the electrode dimensions.
Bibliography:ark:/67375/WNG-0RLG4XVJ-Q
ArticleID:ELAN204
istex:96E19463E1480350F34C1039E5BAAB2003B9F7AD
ISSN:1040-0397
1521-4109
DOI:10.1002/1521-4109(200103)13:3<204::AID-ELAN204>3.0.CO;2-V