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Capillary pumps with constant flow rate
KTH, School of Electrical Engineering (EES), Micro and Nanosystems.ORCID iD: 0000-0001-8248-6670
2014 (English)In: Microfluidics and Nanofluidics, ISSN 1613-4982, E-ISSN 1613-4990, Vol. 16, no 5, 829-837 p.Article in journal (Refereed) Published
Abstract [en]

This paper unambiguously derives, ab initio starting from the Navier–Stokes and Laplace equations, the geometric parameters defining capillary pumps (CPs) with rectangular cross section with constant volumetric flow rate and steady velocity profile. The parametric formulation of the channel shape is derived using Taylor series approximations of the capillary pressure and the hydrodynamic flow resistance with negligible error. First, the design parameters are derived for a CP consisting of a single channel and illustrated with an example. Thereafter, the design parameters for multichannel and for micropillar array CPs are derived. Finally, the design of CPs for multistep constant flow rates derived and those for arbitrarily varying flow rates are discussed.

Place, publisher, year, edition, pages
Springer, 2014. Vol. 16, no 5, 829-837 p.
Keyword [en]
microfluidics, MEMS, lab-on-a-chip, lateral flow assay, capillary pump, diagnostic test
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-137216DOI: 10.1007/s10404-014-1365-3ISI: 000335457600006Scopus ID: 2-s2.0-84899941839OAI: oai:DiVA.org:kth-137216DiVA: diva2:678409
Projects
routine
Funder
EU, FP7, Seventh Framework Programme
Note

QC 20140505

Available from: 2013-12-12 Created: 2013-12-12 Last updated: 2017-12-06Bibliographically approved

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CPs with constant flow(9563 kB)698 downloads
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van der Wijngaart, Wouter

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