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      Electrical impedance spectroscopy (EIS) for biological analysis and food characterization: a review

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      Journal of Sensors and Sensor Systems
      Copernicus GmbH

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          Abstract

          <p><strong>Abstract.</strong> Electrical impedance spectroscopy (EIS), in which a sinusoidal test voltage or current is applied to the sample under test to measure its impedance over a suitable frequency range, is a powerful technique to investigate the electrical properties of a large variety of materials. In practice, the measured impedance spectra, usually fitted with an equivalent electrical model, represent an electrical fingerprint of the sample providing an insight into its properties and behavior. EIS is used in a broad range of applications as a quick and easily automated technique to characterize solid, liquid, semiliquid, organic as well as inorganic materials. This paper presents an updated review of EIS main implementations and applications.</p>

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          Impedance Spectroscopy

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            Influence of electrolyte in transport and recombination in dye-sensitized solar cells studied by impedance spectroscopy

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              Electrochemical impedance spectroscopy.

              This review describes recent advances in electrochemical impedance spectroscopy (EIS) with an emphasis on its novel applications to various electrochemistry-related problems. Section 1 discusses the development of new EIS techniques to reduce measurement time. For this purpose, various forms of multisine EIS techniques were first developed via a noise signal synthesized by mixing ac waves of various frequencies, followed by fast Fourier transform of the signal and the resulting current. Subsequently, an entirely new concept was introduced in which true white noise was used as an excitation source, followed by Fourier transform of both excitation and response signals. Section 2 describes novel applications of the newly developed techniques to time-resolved impedance measurements as well as to impedance imaging. Section 3 is devoted to recent applications of EIS techniques, specifically traditional measurements in various fields with a special emphasis on biosensor detections.
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                Author and article information

                Journal
                Journal of Sensors and Sensor Systems
                J. Sens. Sens. Syst.
                Copernicus GmbH
                2194-878X
                2017
                August 28 2017
                : 6
                : 2
                : 303-325
                Article
                10.5194/jsss-6-303-2017
                59e2113e-6695-4334-8302-c277fe44765e
                © 2017

                https://creativecommons.org/licenses/by/3.0/

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