Four-contact impedance spectroscopy of conductive liquid samples

Damjan Pelc; Sanjin Marion; Mario Basletić

doi:10.1063/1.3609867

Four-contact impedance spectroscopy of conductive liquid samples

Damjan Pelc, Sanjin Marion, Mario Basletić

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We present an improved approach to the impedance spectroscopy of conductive liquid samples using four-electrode measurements. Our method enables impedance measurements of conductive liquids down to the sub-Hertz frequencies, avoiding the electrode polarization effects that usually cripple standard impedance analysers. We have successfully tested our apparatus with aqueous solutions of potassium chloride and gelatin. The first substance has shown flat spectra from ∼100 kHz down to sub-Hz range, while the results on gelatin clearly show the existence of two distinct low frequency conductive relaxations.

Original language	English (US)
Article number	073907
Journal	Review of Scientific Instruments
Volume	82
Issue number	7
DOIs	https://doi.org/10.1063/1.3609867
State	Published - Jul 2011

Bibliographical note

Funding Information:
We are pleased to acknowledge the assistance of Professor Miroslav Požek, Dr. Tomislav Vuletić, Dr. Nataša Šijaković-Vujičić, and Professor Amir Hamzić. This work was partially funded by the Croatian MZOS Projects 119-1191458-1023 and 119-1191458-1022, and UKF Project No. 55.

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title = "Four-contact impedance spectroscopy of conductive liquid samples",

abstract = "We present an improved approach to the impedance spectroscopy of conductive liquid samples using four-electrode measurements. Our method enables impedance measurements of conductive liquids down to the sub-Hertz frequencies, avoiding the electrode polarization effects that usually cripple standard impedance analysers. We have successfully tested our apparatus with aqueous solutions of potassium chloride and gelatin. The first substance has shown flat spectra from ∼100 kHz down to sub-Hz range, while the results on gelatin clearly show the existence of two distinct low frequency conductive relaxations.",

author = "Damjan Pelc and Sanjin Marion and Mario Basleti{\'c}",

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AU - Marion, Sanjin

AU - Basletić, Mario

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PY - 2011/7

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N2 - We present an improved approach to the impedance spectroscopy of conductive liquid samples using four-electrode measurements. Our method enables impedance measurements of conductive liquids down to the sub-Hertz frequencies, avoiding the electrode polarization effects that usually cripple standard impedance analysers. We have successfully tested our apparatus with aqueous solutions of potassium chloride and gelatin. The first substance has shown flat spectra from ∼100 kHz down to sub-Hz range, while the results on gelatin clearly show the existence of two distinct low frequency conductive relaxations.

AB - We present an improved approach to the impedance spectroscopy of conductive liquid samples using four-electrode measurements. Our method enables impedance measurements of conductive liquids down to the sub-Hertz frequencies, avoiding the electrode polarization effects that usually cripple standard impedance analysers. We have successfully tested our apparatus with aqueous solutions of potassium chloride and gelatin. The first substance has shown flat spectra from ∼100 kHz down to sub-Hz range, while the results on gelatin clearly show the existence of two distinct low frequency conductive relaxations.

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Four-contact impedance spectroscopy of conductive liquid samples

Abstract

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