Modelling of the migration effect occurring at an ISFET-based coulometric sensor-actuator system
نویسندگان
چکیده
منابع مشابه
Modelling of the migration effect occurring ISFET-based coulometric sensor-actuator system
The migration effect, in addition to diffusion, occurring at an ion-selective field-effect transistor (ISFET)-based coulometric sensor-actuator system has been studied. A diffusion-migration model is presented, based on the numerical solution of the Nemst-Planck equations of which a digital simulation is realized. Corresponding experiments were carried out and compared with the simulation. The ...
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Acid or base concentrations can be determmed very rapidly by performmg an acid-base titration with coulometncally generated OHor H+ ions at a noble metal actuator electrode m close proximity to the pH-sensitive gate of an ion-sensitive field effect transistor (ISFET) The ISFET is used as the mdicator electrode to detect the eqmvalence point in the titration curve Typical values for the time nee...
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Acid or base concentrations can be determined by performing an acid-base titration with OHor H+ ions, coulometricaliy generated by the electrolysis of water at a noble metal actuator electrode. This can be done very rapidly if the actuator electrode is in close proximity to an ISFET which is used as the indicator electrode to detect the equivalence point in the titration curve. In order to rest...
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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 x lop3 to 20 x lop3 mol 1 -I. A model is presen...
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Acid or base concentrations can be determined by performing an acid-base titration with coulometrically generated OHor H+ ions at a noble metal actuator electrode in close proximity to the pH-sensitive gate of an ISFET. It is shown, both theoretically and experimentally, that the relation between the acid or base concentration and the time needed to reach the equivalence point in the resulting ...
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ژورنال
عنوان ژورنال: Analytica Chimica Acta
سال: 1990
ISSN: 0003-2670
DOI: 10.1016/s0003-2670(00)83903-3