Simulation of Redox-Cycling Phenomena at Interdigitated Array (IDA) Electrodes: Amplification and Selectivity

    Research output: Contribution to journalArticleAcademicpeer-review

    23 Citations (Scopus)

    Abstract

    We present Finite Element Method (FEM) simulations of interdigitated array (IDA) electrode geometries to study and verify redox selectivity and redox cycling amplification factor. The simulations provide an adequate explanation of an earlier found, but poorly understood, high amplification factor (65×) in a 1 m-spaced IDA microdevice. Moreover, using the FEM calculations we present selectivity measurements with IDA electrodes in a mixture of two redox species, as for example dopamine and ferricyanide. We show that it is possible to electrochemically detect dopamine in presence of the stronger reductor ferricyanide, which is impossible with direct amperometric detection, with the use of IDA electrodes with proper polarization potential of the collector electrode. Using our simulations, we show that a theoretical selectivity of dopamine over ferricyanide of 11 can be achieved.
    Original languageUndefined
    Article number10.1002/elan.200704105
    Pages (from-to)463-468
    Number of pages6
    JournalElectroanalysis
    Volume20
    Issue number69160R/5
    DOIs
    Publication statusPublished - 28 Feb 2008

    Keywords

    • METIS-250922
    • EWI-12158
    • IR-62229

    Cite this

    @article{cefe6e4b5b3f4b67bdfed8081710ad51,
    title = "Simulation of Redox-Cycling Phenomena at Interdigitated Array (IDA) Electrodes: Amplification and Selectivity",
    abstract = "We present Finite Element Method (FEM) simulations of interdigitated array (IDA) electrode geometries to study and verify redox selectivity and redox cycling amplification factor. The simulations provide an adequate explanation of an earlier found, but poorly understood, high amplification factor (65×) in a 1 m-spaced IDA microdevice. Moreover, using the FEM calculations we present selectivity measurements with IDA electrodes in a mixture of two redox species, as for example dopamine and ferricyanide. We show that it is possible to electrochemically detect dopamine in presence of the stronger reductor ferricyanide, which is impossible with direct amperometric detection, with the use of IDA electrodes with proper polarization potential of the collector electrode. Using our simulations, we show that a theoretical selectivity of dopamine over ferricyanide of 11 can be achieved.",
    keywords = "METIS-250922, EWI-12158, IR-62229",
    author = "Mathieu Odijk and Wouter Olthuis and T.V.A. Dam and {van den Berg}, Albert",
    note = "10.1002/elan.200704105",
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    doi = "10.1002/elan.200704105",
    language = "Undefined",
    volume = "20",
    pages = "463--468",
    journal = "Electroanalysis",
    issn = "1040-0397",
    publisher = "Wiley-VCH Verlag",
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    Simulation of Redox-Cycling Phenomena at Interdigitated Array (IDA) Electrodes: Amplification and Selectivity. / Odijk, Mathieu; Olthuis, Wouter; Dam, T.V.A.; van den Berg, Albert.

    In: Electroanalysis, Vol. 20, No. 69160R/5, 10.1002/elan.200704105, 28.02.2008, p. 463-468.

    Research output: Contribution to journalArticleAcademicpeer-review

    TY - JOUR

    T1 - Simulation of Redox-Cycling Phenomena at Interdigitated Array (IDA) Electrodes: Amplification and Selectivity

    AU - Odijk, Mathieu

    AU - Olthuis, Wouter

    AU - Dam, T.V.A.

    AU - van den Berg, Albert

    N1 - 10.1002/elan.200704105

    PY - 2008/2/28

    Y1 - 2008/2/28

    N2 - We present Finite Element Method (FEM) simulations of interdigitated array (IDA) electrode geometries to study and verify redox selectivity and redox cycling amplification factor. The simulations provide an adequate explanation of an earlier found, but poorly understood, high amplification factor (65×) in a 1 m-spaced IDA microdevice. Moreover, using the FEM calculations we present selectivity measurements with IDA electrodes in a mixture of two redox species, as for example dopamine and ferricyanide. We show that it is possible to electrochemically detect dopamine in presence of the stronger reductor ferricyanide, which is impossible with direct amperometric detection, with the use of IDA electrodes with proper polarization potential of the collector electrode. Using our simulations, we show that a theoretical selectivity of dopamine over ferricyanide of 11 can be achieved.

    AB - We present Finite Element Method (FEM) simulations of interdigitated array (IDA) electrode geometries to study and verify redox selectivity and redox cycling amplification factor. The simulations provide an adequate explanation of an earlier found, but poorly understood, high amplification factor (65×) in a 1 m-spaced IDA microdevice. Moreover, using the FEM calculations we present selectivity measurements with IDA electrodes in a mixture of two redox species, as for example dopamine and ferricyanide. We show that it is possible to electrochemically detect dopamine in presence of the stronger reductor ferricyanide, which is impossible with direct amperometric detection, with the use of IDA electrodes with proper polarization potential of the collector electrode. Using our simulations, we show that a theoretical selectivity of dopamine over ferricyanide of 11 can be achieved.

    KW - METIS-250922

    KW - EWI-12158

    KW - IR-62229

    U2 - 10.1002/elan.200704105

    DO - 10.1002/elan.200704105

    M3 - Article

    VL - 20

    SP - 463

    EP - 468

    JO - Electroanalysis

    JF - Electroanalysis

    SN - 1040-0397

    IS - 69160R/5

    M1 - 10.1002/elan.200704105

    ER -