2017
DOI: 10.1016/j.snb.2017.04.143
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Description of ionophore-doped membranes with a blocked interface

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Cited by 17 publications
(8 citation statements)
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“…Sanders et al used a rigorous Nernst–Planck–Poisson (NPP) model, where assumption of local equilibrium across the interface is not required, to simulate the behavior of ion sensors with blocked interfaces, such as coated-wire electrodes and ion-selective field effect transistors (ISFETs) . This work demonstrates the first application of the NPP model to predict the response of AlGaN/GaN ISFETs with ionophore-doped membranes.…”
Section: Theory Of Potentiometric Responsementioning
confidence: 99%
“…Sanders et al used a rigorous Nernst–Planck–Poisson (NPP) model, where assumption of local equilibrium across the interface is not required, to simulate the behavior of ion sensors with blocked interfaces, such as coated-wire electrodes and ion-selective field effect transistors (ISFETs) . This work demonstrates the first application of the NPP model to predict the response of AlGaN/GaN ISFETs with ionophore-doped membranes.…”
Section: Theory Of Potentiometric Responsementioning
confidence: 99%
“…For MgCl 2 and LiCl, significant interference was observed and the response is sub-Nernstian. This is due to relatively stronger binding characteristics of these interfering ions with the ionophore [30]. For KCl and NaCl as interfering ions, sensor characteristics showed calcium detection limits of well below 10 -7 M and a linear response range between 10 -7 -10 -2 M. However, for MgCl 2 and LiCl, the detection limit increased significantly.…”
Section: Resultsmentioning
confidence: 97%
“…This was not the case for the previous device design for the nitrate and mercury sensors. In this work the channel conductivity was therefore extracted from total conductivity by modelling the parasitic regions as a shunt and access resistance [30].…”
Section: Resultsmentioning
confidence: 99%
“…The NPP model has been successfully used for the description of a large variety of electrochemical sensors used in potentiometry [31][32][33][34][35][36][37]47] and impedance spectroscopy [13,48,49]. That includes the NPP description of neutral carrier electrodes [50], solid-contact electrodes [51], coated-wire electrodes [52], and ion-selective field effect transistors [52]. Application of NPP in sensors leads to a deeper understanding of sensing mechanisms and underlying electrochemical processes, together with the miniaturization that can lead to the development of more robust and precise electrochemical sensors for in vivo measurements.…”
Section: The Nernst-planck-poisson Modelmentioning
confidence: 99%