A method to probe electrochemically active material state in portable sensor applications

A new method allowing the simultaneous and automatic determination of potentiometric and impedimetric characteristics of an electrochemical cell is presented. This method is based on a computerized or micro-controlled feedback loop that conditions a potentiostat input signal as a function of its out...

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Bibliographic Details
Published in:Sensors and actuators. B, Chemical Chemical, 2011-08, Vol.156 (1), p.35-42
Main Authors: Yunus, S., Attout, A., Vanlancker, G., Bertrand, P., Ruth, N., Galleni, M.
Format: Article
Language:English
Subjects:
Actuators
Antibiotic sensor
Antibiotics
Electrochemical cells
electrochemistry
electrodes
Feedback loops
Impedimetry
Mathematical analysis
methodology
pH sensor
Polyaniline
Portability
Portable electrochemical sensor
Potentiometry
Sensors
Versatility
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Summary:A new method allowing the simultaneous and automatic determination of potentiometric and impedimetric characteristics of an electrochemical cell is presented. This method is based on a computerized or micro-controlled feedback loop that conditions a potentiostat input signal as a function of its output signal. The embedding of this method in a portable sensor prototype is used to evaluate the versatility and usefulness of this new approach. As this method is active, it is used both for the electrochemical preparation of polyaniline coated electrodes and for their subsequent evaluation in pH-linked sensors such as an antibiotic sensor.
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2011.03.070