Self-Similar Interfacial Impedance of Electrodes in High Conductivity Media

Analytical Chemistry
Anil KokluAli Beskok

Abstract

Electrode polarization (EP) happening due to accumulation of ions at the electrode/electrolyte interface is an inevitable phenomenon while measuring impedance spectrum in high conductivity buffers and at low RF spectrum. Well-characterized time scales elucidating the EP effect are important for the rational design of microfluidic devices and impedance sensors. In this Article, interfacial impedance at the electrode/electrolyte interface is investigated considering channel height and Debye length effects on characteristic time scale in a binary electrolyte solution using parallel plate electrode configuration. Experimental results reveal self-similarity of normalized electrical impedance as a function of the normalized frequency. The experimental results also match with numerical solutions obtained by finite element simulation of unsteady fully coupled Poisson-Nernst-Planck (PNP) equations. Furthermore, fractal shaped gold nanostructured electrodes are examined, and it has been proven that electric double layer (EDL) formed on porous electrode surfaces acts as a thick EDL and modifications to the characteristic time scale is necessary for porous electrodes. Finally, a constant phase element (CPE) model is proposed to account for...Continue Reading

References

Jan 1, 1992·Annals of Biomedical Engineering·H P Schwan
Feb 1, 1968·Annals of the New York Academy of Sciences·H P Schwan
Mar 30, 2004·Biosensors & Bioelectronics·Liju YangMichael G Johnson
Sep 28, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Martin Z BazantArmand Ajdari
Apr 13, 2005·Cytometry. Part a : the Journal of the International Society for Analytical Cytology·Karen CheungPhilippe Renaud
Jul 27, 2005·IEEE Transactions on Bio-medical Engineering·Wendy FranksAndreas Hierlemann
Apr 17, 2008·Analytical and Bioanalytical Chemistry·F Lisdat, D Schäfer
Dec 2, 2008·Biosensors & Bioelectronics·Madhukar Varshney, Yanbin Li
Feb 2, 2010·The Review of Scientific Instruments·D MalleoH Morgan
Aug 17, 2012·Nature·Steven Chu, Arun Majumdar
Sep 29, 2015·IEEE Transactions on Nanobioscience·Renny FernandezAli Beskok
Jan 1, 2016·Biosensors & Bioelectronics·Mohammad Mahdi Mardanpour, Soheila Yaghmaei
Feb 23, 2017·Lab on a Chip·Adele De NinnoFederica Caselli

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