Sensors 2014, 14(2), 3267-3283; doi:10.3390/s140203267
Article

Modelling of Impulsional pH Variations Using ChemFET-Based Microdevices: Application to Hydrogen Peroxide Detection

1,2email, 1,2email, 1,2email and 1,2,* email
Received: 30 December 2013; in revised form: 7 February 2014 / Accepted: 12 February 2014 / Published: 19 February 2014
(This article belongs to the Section Physical Sensors)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: This work presents the modelling of impulsional pH variations in microvolume related to water-based electrolysis and hydrogen peroxide electrochemical oxidation using an Electrochemical Field Effect Transistor (ElecFET) microdevice. This ElecFET device consists of a pH-Chemical FET (pH-ChemFET) 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 such as: (i) polarization parameters on the microelectrode, i.e., voltage (Vp) and time (tp); (ii) distance between the gate sensitive area and the microelectrode (d); and (iii) hydrogen peroxide concentration ([H2O2]). The model developed can predict the ElecFET response behaviour and creates new opportunities for H2O2-based enzymatic detection of biomolecules.
Keywords: modelling; ChemFET; microelectrode; H2O electrolysis; H2O2 detection
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MDPI and ACS Style

Diallo, A.K.; Djeghlaf, L.; Launay, J.; Temple-Boyer, P. Modelling of Impulsional pH Variations Using ChemFET-Based Microdevices: Application to Hydrogen Peroxide Detection. Sensors 2014, 14, 3267-3283.

AMA Style

Diallo AK, Djeghlaf L, Launay J, Temple-Boyer P. Modelling of Impulsional pH Variations Using ChemFET-Based Microdevices: Application to Hydrogen Peroxide Detection. Sensors. 2014; 14(2):3267-3283.

Chicago/Turabian Style

Diallo, Abdou K.; Djeghlaf, Lyes; Launay, Jerome; Temple-Boyer, Pierre. 2014. "Modelling of Impulsional pH Variations Using ChemFET-Based Microdevices: Application to Hydrogen Peroxide Detection." Sensors 14, no. 2: 3267-3283.

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