Nonlinear phenomenon of interfacial polarization immittance of a Pt electrode.

Moussavi, M; Sun, H H; Schwan, H P; Richter, A · Ann Biomed Eng · 1990

basic_science · Level V

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Abstract

Description of a computerized, automated method to measure the interfacial polarization immittance of a Pt electrode in nonlinear range is presented. The classical three-electrode setup is used for measurements in conjunction with a special purpose software implemented on a Unix computer using C language. A collection of data at very low frequencies (below 2 Hz) and at high input intensities with various dc biases imposed on the input are presented to show the behavior of the interface in nonlinear range. The instrument also provides on-line harmonic analysis of the output signal, by calculating the first four Fourier series coefficients, in response to a pure sinusoidal input.

Medical subject headings