A co-flow-focusing monodisperse microbubble generator

Handle URI:
http://hdl.handle.net/10754/563396
Title:
A co-flow-focusing monodisperse microbubble generator
Authors:
Zhang, Jiaming ( 0000-0003-3208-8118 ) ; Li, Erqiang ( 0000-0002-5003-0756 ) ; Thoroddsen, Sigurdur T. ( 0000-0001-6997-4311 )
Abstract:
We use a simple and inexpensive microfluidic device, which is based on microscope glass slides and two tapered glass capillaries, to produce monodisperse microbubbles. The innermost capillary used for transporting the gas is inserted into the second capillary, with its 2 μm sharp tip aligned with the center of the converging-diverging throat of the second capillary. This configuration provides a small and smooth gas flow rate, and a high velocity gradient at the tube outlet. Highly monodisperse microbubbles with diameters ranging from 3.5 to 60 microns have been successfully produced at a rate of up to 40 kHz. A simple scaling law, which is based on the capillary number and liquid-to-gas flow rate ratio, successfully predicts the bubble size. © 2014 IOP Publishing Ltd.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Clean Combustion Research Center; Mechanical Engineering Program; High-Speed Fluids Imaging Laboratory
Publisher:
IOP Publishing
Journal:
Journal of Micromechanics and Microengineering
Issue Date:
14-Feb-2014
DOI:
10.1088/0960-1317/24/3/035008
Type:
Article
ISSN:
09601317
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorZhang, Jiamingen
dc.contributor.authorLi, Erqiangen
dc.contributor.authorThoroddsen, Sigurdur T.en
dc.date.accessioned2015-08-03T11:47:32Zen
dc.date.available2015-08-03T11:47:32Zen
dc.date.issued2014-02-14en
dc.identifier.issn09601317en
dc.identifier.doi10.1088/0960-1317/24/3/035008en
dc.identifier.urihttp://hdl.handle.net/10754/563396en
dc.description.abstractWe use a simple and inexpensive microfluidic device, which is based on microscope glass slides and two tapered glass capillaries, to produce monodisperse microbubbles. The innermost capillary used for transporting the gas is inserted into the second capillary, with its 2 μm sharp tip aligned with the center of the converging-diverging throat of the second capillary. This configuration provides a small and smooth gas flow rate, and a high velocity gradient at the tube outlet. Highly monodisperse microbubbles with diameters ranging from 3.5 to 60 microns have been successfully produced at a rate of up to 40 kHz. A simple scaling law, which is based on the capillary number and liquid-to-gas flow rate ratio, successfully predicts the bubble size. © 2014 IOP Publishing Ltd.en
dc.publisherIOP Publishingen
dc.subjectco-flowen
dc.subjectmicrobubblesen
dc.subjectsurface tensionen
dc.titleA co-flow-focusing monodisperse microbubble generatoren
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentClean Combustion Research Centeren
dc.contributor.departmentMechanical Engineering Programen
dc.contributor.departmentHigh-Speed Fluids Imaging Laboratoryen
dc.identifier.journalJournal of Micromechanics and Microengineeringen
kaust.authorLi, Erqiangen
kaust.authorThoroddsen, Sigurdur T.en
kaust.authorZhang, Jiamingen
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