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Electrolysis-Induced Pneumatic Pressure for Control of Liquids in a Centrifugal System

Author(s)
Noroozi, ZahraKido, HoracioMadou, Mark
Issued Date
2011-11
DOI
10.1149/2.028111jes
URI
https://scholarworks.unist.ac.kr/handle/201301/2661
Fulltext
http://jes.ecsdl.org/content/158/11/P130
Citation
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.158, no.11, pp.P130 - P135
Abstract
We have developed a technique that utilizes electrolysis-generated pneumatic pressure and centrifugal force to achieve simple and reliable control over liquids in the microfluidic system of a rotating circular disk (CD). Specifically, this new technique was demonstrated for the propulsion of liquids in an upstream direction, against the centrifugal acceleration field, with control over their flow rates (metering). We also developed a simple mathematical model to describe the metering of said liquids as a function of electrical current flowing through an electrolyte (for generating pneumatic pressure) and also as a function of the angular frequency of rotation of the CD. A good correlation between the model and experimental data was achieved.
Publisher
ELECTROCHEMICAL SOC INC
ISSN
0013-4651

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