Dynamic behaviour of ISFET-based Sensor-Actuator systems

W. Olthuis, J. Luo, B.H. van der Schoot, J.G. Bomer, P. Bergveld

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    Abstract

    Rapid acid-base titrations can be performed at the surface of a noble-metal electrode with coulometrically generated ions. An ISFET is used as an indicator electrode to detect the equivalence point in the resulting titration curve. The time needed to reach the equivalence point is typically 0.5 to 10 s for acid/base concentrations ranging from 0.5 × 10−3 to 20 × 10−3 mol l−1. A model is presented describing the concentration profiles which appear during the coulometric generation of ions. The result of this model is in good agreement with corresponding measurements. These measurements are carried out with two different actuator electrodes, of which the processing steps are described.
    Original languageEnglish
    Pages (from-to)416-420
    Number of pages5
    JournalSensors and actuators. B: Chemical
    Volume1
    Issue number1-6
    DOIs
    Publication statusPublished - 1990

    Fingerprint

    Ion sensitive field effect transistors
    Actuators
    actuators
    Titration
    titration
    Electrodes
    electrodes
    equivalence
    sensors
    Sensors
    Ions
    acids
    Acids
    Precious metals
    noble metals
    ions
    curves
    Processing
    profiles

    Cite this

    Olthuis, W. ; Luo, J. ; van der Schoot, B.H. ; Bomer, J.G. ; Bergveld, P. / Dynamic behaviour of ISFET-based Sensor-Actuator systems. In: Sensors and actuators. B: Chemical. 1990 ; Vol. 1, No. 1-6. pp. 416-420.
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    abstract = "Rapid acid-base titrations can be performed at the surface of a noble-metal electrode with coulometrically generated ions. An ISFET is used as an indicator electrode to detect the equivalence point in the resulting titration curve. The time needed to reach the equivalence point is typically 0.5 to 10 s for acid/base concentrations ranging from 0.5 × 10−3 to 20 × 10−3 mol l−1. A model is presented describing the concentration profiles which appear during the coulometric generation of ions. The result of this model is in good agreement with corresponding measurements. These measurements are carried out with two different actuator electrodes, of which the processing steps are described.",
    author = "W. Olthuis and J. Luo and {van der Schoot}, B.H. and J.G. Bomer and P. Bergveld",
    year = "1990",
    doi = "10.1016/0925-4005(90)80241-Q",
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    Dynamic behaviour of ISFET-based Sensor-Actuator systems. / Olthuis, W.; Luo, J.; van der Schoot, B.H.; Bomer, J.G.; Bergveld, P.

    In: Sensors and actuators. B: Chemical, Vol. 1, No. 1-6, 1990, p. 416-420.

    Research output: Contribution to journalArticleAcademicpeer-review

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    T1 - Dynamic behaviour of ISFET-based Sensor-Actuator systems

    AU - Olthuis, W.

    AU - Luo, J.

    AU - van der Schoot, B.H.

    AU - Bomer, J.G.

    AU - Bergveld, P.

    PY - 1990

    Y1 - 1990

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    AB - Rapid acid-base titrations can be performed at the surface of a noble-metal electrode with coulometrically generated ions. An ISFET is used as an indicator electrode to detect the equivalence point in the resulting titration curve. The time needed to reach the equivalence point is typically 0.5 to 10 s for acid/base concentrations ranging from 0.5 × 10−3 to 20 × 10−3 mol l−1. A model is presented describing the concentration profiles which appear during the coulometric generation of ions. The result of this model is in good agreement with corresponding measurements. These measurements are carried out with two different actuator electrodes, of which the processing steps are described.

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    DO - 10.1016/0925-4005(90)80241-Q

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