NDLI: Bubble Free High Efficiency Electroosmotic Pumps

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Mena, E. Tawfik Thomas, E. Hansen Diez, F. J.
Copyright Year	2015
Abstract	In generating high electroosmotic flows for use in microfluidic pumps, a limiting factor is faradaic reactions which appear at high electric fields. These reactions lead to higher power consumption and bubble generation at the electrodes. We are proposing a novel technique that can limit and even prevent gas generation. This will extend the current range of operation of electroosmotic pumps. This is achieved by applying a unidirectional pulsed DC voltage waveform. The optimum pulse voltage waveform (OPW) tested is based on a theoretical model developed by the authors [1]. The power consumed and the efficiency of an electroosmotic pump under the pulsed DC voltage is measured experimentally and compared with the conventional bipolar rectangular voltage waveform (BRW). Results show an increase in the efficiency for the OPW when compared to the BRW. This increase in efficiency is obtained by preventing the reverse cycle in the BRW which flows against the pumping direction.
Sponsorship	Fluids Engineering Division
File Format	PDF
ISBN	9780791857229
DOI	10.1115/AJKFluids2015-34695
Volume Number	Volume 2: Fora
Conference Proceedings	ASME/JSME/KSME 2015 Joint Fluids Engineering Conference
Language	English
Publisher Date	2015-07-26
Publisher Place	Seoul, South Korea
Access Restriction	Subscribed
Subject Keyword	Electrodes Cycles Energy consumption Bubbles Pumps Electroosmosis Electric fields Flow (dynamics) Microfluidics
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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