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Journal articles
Modelling of Impulsional pH Variations Using ChemFET-Based Microdevices: Application to Hydrogen Peroxide Detection
Abstract : This work presents the modelling of impulsional pH variations in microvolume related to water-based electrolysis and hydrogen peroxide electrochemical oxidation using an ElecFET (Electrochemical Field Effect Transistor) microdevice. This ElecFET device consists of a pH-ChemFET (pH-Chemical FET) with an integrated microelectrode around the dielectric gate area in order to trigger electrochemical reactions. Combining oxidation/reduction reactions on the microelectrode, water self-ionization and diffusion properties of associated chemical species, the model shows that the sensor response depends on the main influential parameters as: (i) polarization parameters on the microelectrode, i.e. voltage (V p) and time (t p), (ii) distance between the gate sensitive area and the microelectrode (d), and (iii) hydrogen peroxide concentration ([H 2 O 2 ]). The model developed can predict the ElecFET response behaviour and creates new opportunities for H 2 O 2 –based enzymatic detection of biomolecules.
Cited literature [32 references]
https://hal.archives-ouvertes.fr/hal-01508071
Contributor : Pierre Temple-Boyer <>
Submitted on : Thursday, April 13, 2017 - 4:57:47 PM
Last modification on : Friday, January 10, 2020 - 9:10:15 PM
Contributor : Pierre Temple-Boyer <>
Submitted on : Thursday, April 13, 2017 - 4:57:47 PM
Last modification on : Friday, January 10, 2020 - 9:10:15 PM
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