What can we learn from Impedance Spectroscopy?

What can we learn from Impedance Spectroscopy?

Conference proceedings

Measurement of electrical impedance is a kind of an instrumental method. Over years, with advances of electronics and instrumentation in general, the technique is often available through commercial instruments or add-on modules to such commercial instruments. Impedance, in its simplest form, is an electrical method in which generalized resistance of material to flow of alternating current is measured. The frequency of the applied signal is varied over a wide range, thus the term "spectroscopy" in this method. In the measurement both the ratio of the applied potential and the resulting current, as well as the phase shift between the imposed potential and the resulting current, are measured. Thus, a two parameter result is obtained for each frequency of the applied AC signal. The method, with appropriate mathematical treatment, allows study of materials through evaluation of the two component result - the impedance response - on the applied frequency.

Measurement of electrical impedance is a kind of an instrumental method. Over years, with advances of electronics and instrumentation in general, the technique is often available through commercial instruments or add-on modules to such commercial instruments. Impedance, in its simplest form, is an electrical method in which generalized resistance of material to flow of alternating current is measured. The frequency of the applied signal is varied over a wide range, thus the term "spectroscopy" in this method. In the measurement both the ratio of the applied potential and the resulting current, as well as the phase shift between the imposed potential and the resulting current, are measured. Thus, a two parameter result is obtained for each frequency of the applied AC signal. The method, with appropriate mathematical treatment, allows study of materials through evaluation of the two component result - the impedance response - on the applied frequency.

Impedance, instrumental methods, experimantal errors.

Impedance, instrumental methods, experimantal errors.

VANÝSEK, P.

2017

04.11.2016

Univerzita Pavla Jozefa Šafárika v Košiciach

Košice, Slovensko

978-80-8152-457-8

NEW TRENDS IN CHEMISTRY, Trends in chemistry, research and education at Faculty of Sciences of P.J. Šafárik University Košice

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