Analysis of Governing Parameters for Silver-Silver Chloride Electrodes in Microfluidic Electrokinetic Devices

Authors: Dunphy, Katherine¹; Karnik, Rohit¹; Trinkle, Christine¹; Majumdar, Arun²

Source: Microscale Thermophysical Engineering, Volume 9, Number 2, April-June 2005 , pp. 199-211(13)

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Abstract:

Electrokinetics has become a popular method of both particulate and fluidic control in microdevices. In an effort to address the problems associated with conventional electrokinetic control, we use silver-silver chloride electrodes for low-voltage, spatially localized electrokinetic control in microfluidic devices. This work presents an analysis of the electric fields generated by silver-silver chloride electrodes and establishes a nondimensional design parameter that governs the device performance. In addition, an optimal parameter space for maximum electrode longevity is presented.

Keywords: electrokinetic; microfluidics; silver-silver chloride; electrode arrays; low voltage

Document Type: Research article

DOI: http://dx.doi.org/10.1080/10893950590945067

Affiliations: 1: Department of Mechanical Engineering, University of California, Berkeley, California, USA 2: Department of Mechanical Engineering, University of California, Berkeley, California, USA and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA

Publication date: 2005-04-01

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