Electrochemical Impedance Spectroscopy
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- Electrochemical Impedance Spectroscopy
- Chang, Byoung-Yong; Park, Su-Moon
- biosensors; electrified interfaces; electrochemical measurements; electrode kinetics; equivalent circuits
- Issue Date
- ANNUAL REVIEWS
- ANNUAL REVIEW OF ANALYTICAL CHEMISTRY, v.3, no.1, pp.207 - 229
- 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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