New Apparatus for Measuring the Complex Dielectric Constant of a Highly Conductive Material

Autor:	Masanori Sakamoto, Hiroshi Kanda, Yasaku Wada, Reinosuke Hayakawa
Rok vydání:	1975
Předmět:	Range (particle radiation) Materials science Aqueous solution Physics and Astronomy (miscellaneous) Condensed matter physics Conductive materials General Engineering Analytical chemistry General Physics and Astronomy Conductance Dielectric Polyelectrolyte Dielectric loss Electrical impedance
Zdroj:	Japanese Journal of Applied Physics. 14:2039-2052
ISSN:	1347-4065 0021-4922
DOI:	10.1143/jjap.14.2039
Popis:	Difficulties in measuring the contplex dielectric constant of a highly conductive material such as aqueous polyelectrolytes including biopolymers arise from (l) electrode polarization effect and (2) d.c. conductance of the specimen which is very much higher than the conductance due to dielectric loss and drifts with time. A new method has been developed in which the first difficulty is avoided by employing a four-electrode cell and the second orue is overcome by direct measurement of the frequency difference spectrum of specimen impedance, ΔZ(ω)=Z(ω)-Z(ω0), between the measuring frequency ω and the reference ω0. By this procedure, the effect of frequency-independent d.c. conductance is eliminated. With the new method, the frequency range of dielectric measurement is extended from 0.2 Hz to 30 kHz.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b87e30a20108bc01b52fbb1af00e7c86 https://doi.org/10.1143/jjap.14.2039 Zobrazit plný text záznamu