NDLI: Electroosmotic flow velocity measurements in a square microchannel

Content Provider	Springer Nature Link
Author	Hsieh, Shou Shing Lin, Hung Chun Lin, Chih Yi
Copyright Year	2006
Abstract	Experiments were performed using a microparticle image velocimetry (MPIV) for 2D velocity distributions of electroosmotically driven flows in a 40-mm-long microchannel with a square cross section of 200×200 μm. Electroosmotic flow (EOF) bulk fluid velocity measurements were made in a range of streamwise electric field strengths from 5 to 25 kV/m. A series of seed particle calibration tests can be made in a 200×120×24,000-μm untreated polydimethyl siloxane (PDMS channel incorporating MPIV to determine the electrophoretic mobilities in aqueous buffer solutions of 1× TAE, 1× TBE, 10 mM NaCl, and 10 mM borate. A linear/nonlinear (due to Joule heating) flow rate increase with applied field was obtained and compared with those of previous studies. A parametric study, with extensive measurements, was performed with different electric field strength and buffer solution concentration under a constant zeta potential at wall for each buffer. The characteristics of EOF in square microchannels were thus investigated. Finally, a composite correlation of the relevant parameters was developed in the form of $$u* = 5.46\;\varsigma { 1pt} ^{{0.739}} DN^{{ - 2.132}} ME^{{0.9996}}_{x}$$ within ±1% accuracy for 99% of the experimental data.
Starting Page	1275
Ending Page	1286
Page Count	12
File Format	PDF
ISSN	0303402X
Journal	Colloid and Polymer Science
Volume Number	284
Issue Number	11
e-ISSN	14351536
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-05-19
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Electroosmotic flow MPIV measurements A square channel
Content Type	Text
Resource Type	Article
Subject	Colloid and Surface Chemistry Materials Chemistry Physical and Theoretical Chemistry Polymers and Plastics

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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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