File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Droplet breakup in expansion-contraction microchannels

TitleDroplet breakup in expansion-contraction microchannels
Authors
Keywordsbehavior
injection
muscle contractility
oscillation
shear stress
Issue Date2016
PublisherNature Research (part of Springer Nature): Fully open access journals. The Journal's web site is located at http://www.nature.com/srep/index.html
Citation
Scientific Reports, 2016, v. 6, p. article no. 21527 How to Cite?
AbstractWe investigate the influences of expansion-contraction microchannels on droplet breakup in capillary microfluidic devices. With variations in channel dimension, local shear stresses at the injection nozzle and focusing orifice vary, significantly impacting flow behavior including droplet breakup locations and breakup modes. We observe transition of droplet breakup location from focusing orifice to injection nozzle, and three distinct types of recently-reported tip-multi-breaking modes. By balancing local shear stresses and interfacial tension effects, we determine the critical condition for breakup location transition, and characterize the tip-multi-breaking mode quantitatively. In addition, we identify the mechanism responsible for the periodic oscillation of inner fluid tip in tip-multi-breaking mode. Our results offer fundamental understanding of two-phase flow behaviors in expansion-contraction microstructures, and would benefit droplet generation, manipulation and design of microfluidic devices.
Persistent Identifierhttp://hdl.handle.net/10722/272917
ISSN
2019 Impact Factor: 3.998
2015 SCImago Journal Rankings: 2.073
PubMed Central ID

 

DC FieldValueLanguage
dc.contributor.authorZhu, P-
dc.contributor.authorKong, T-
dc.contributor.authorLei, L-
dc.contributor.authorTian, X-
dc.contributor.authorKang, Z-
dc.contributor.authorWang, L-
dc.date.accessioned2019-08-06T09:19:01Z-
dc.date.available2019-08-06T09:19:01Z-
dc.date.issued2016-
dc.identifier.citationScientific Reports, 2016, v. 6, p. article no. 21527-
dc.identifier.issn2045-2322-
dc.identifier.urihttp://hdl.handle.net/10722/272917-
dc.description.abstractWe investigate the influences of expansion-contraction microchannels on droplet breakup in capillary microfluidic devices. With variations in channel dimension, local shear stresses at the injection nozzle and focusing orifice vary, significantly impacting flow behavior including droplet breakup locations and breakup modes. We observe transition of droplet breakup location from focusing orifice to injection nozzle, and three distinct types of recently-reported tip-multi-breaking modes. By balancing local shear stresses and interfacial tension effects, we determine the critical condition for breakup location transition, and characterize the tip-multi-breaking mode quantitatively. In addition, we identify the mechanism responsible for the periodic oscillation of inner fluid tip in tip-multi-breaking mode. Our results offer fundamental understanding of two-phase flow behaviors in expansion-contraction microstructures, and would benefit droplet generation, manipulation and design of microfluidic devices.-
dc.languageeng-
dc.publisherNature Research (part of Springer Nature): Fully open access journals. The Journal's web site is located at http://www.nature.com/srep/index.html-
dc.relation.ispartofScientific Reports-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectbehavior-
dc.subjectinjection-
dc.subjectmuscle contractility-
dc.subjectoscillation-
dc.subjectshear stress-
dc.titleDroplet breakup in expansion-contraction microchannels-
dc.typeArticle-
dc.identifier.emailTian, X: tianxw@hku.hk-
dc.identifier.emailWang, L: lqwang@hku.hk-
dc.identifier.authorityWang, L=rp00184-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1038/srep21527-
dc.identifier.pmid26899018-
dc.identifier.pmcidPMC4761913-
dc.identifier.scopuseid_2-s2.0-84959091398-
dc.identifier.hkuros300435-
dc.identifier.hkuros301685-
dc.identifier.volume6-
dc.identifier.spagearticle no. 21527-
dc.identifier.epagearticle no. 21527-
dc.publisher.placeUnited Kingdom-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats