Notes and Reflections on Impedance Spectroscopy

Impedance Spectroscopy of Thin Films

Single Crystal by Impedance Spectroscopy

Bi 4 Ge 3 O 12 (bismuth germanate – BGO) single crystals were produced by the Czochralski technique and their electrical and dielectric properties were investigated by impedance spectroscopy. The isothermal ac measurements were performed for temperatures from room temperature up to 750 °C, but only the data taken above 500 °C presented a complete semicircle in the complex impedance diagrams. Ex...

Portable Analyzer for Impedance Spectroscopy

− The paper presents an impedance analyzer designed for impedance spectroscopy of objects located in the field. The use of the specialized microsystem AD5933 was assumed. The analysis and tests of the microsystem in the configuration proposed by the manufacturer showed the limitations having meaningful influence on the impedance measurement accuracy. In order to eliminate disadvantages of the m...

10.626 Lecture Notes, Impedance of electrodes

In the previous lecture, we leant about impedance spectroscopy. Electrochemical impedance spectroscopy is the technique where the cell or electrode impedance is platted versus frequency. Thus, the impedance is measured as a function of the frequency of the AC source. Electrochemical impedance spectroscopy is a useful method for investigating porous electrodes, which are extensively used in the ...

Reducing Impedance Fluctuation by Electrode Structure for Electrochemical Impedance Spectroscopy

In this paper, we investigated the electrode structure of the electrical bio-sensor to reduce impedance measurement fluctuation. Five pairs of the same electrodes were formed on the PCB substrate, and a fluidic channel was constructed with a double-sided tape and polycarbonate cover so that all the electrodes had the same reagent distribution. In order to find an electrode structure with little...