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Article: Perturbation-induced droplets for manipulating droplet structure and configuration in microfluidics

TitlePerturbation-induced droplets for manipulating droplet structure and configuration in microfluidics
Authors
Issue Date2015
PublisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/journals/jmm
Citation
Journal of Micromechanics and Microengineering: structures, devices & systems, 2015, v. 25 n. 8, article no. 084009 How to Cite?
AbstractIn this work, we mechanically perturb a liquid-in-liquid jet to manipulate the size and structure of the droplets formed from break-up of the jet. The induced break-up is relatively insensitive to fluctuations in the surrounding fluid flow. When the amplitude of perturbations is large and the interfacial tension of the liquid–liquid system is low, the size of the droplets can be precisely tuned by controlling the rate at which the liquid exits the tip of the dispensing nozzle through the frequency of perturbation. When applied to microfluidic devices with the appropriate geometry, our perturbation-induced droplet approach offers a strategy to manipulating droplet structures. We demonstrate that by varying the imposed perturbation frequency and phase lag, the structure of the multi-compartmental drops and the configuration of the resultant drops in the same flow condition can be manipulated. Moreover, after careful treatment of the wettability of the devices, we show that the structure of the droplets can be precisely controlled to change from single emulsion to double emulsion within the same device. The perturbation-induced droplet generation represents a new paradigm in the engineering of droplets, enhancing current droplet-based technologies for applications ranging from particle fabrication to confined micro-reactions.
Persistent Identifierhttp://hdl.handle.net/10722/217081
ISSN
2015 Impact Factor: 1.768
2015 SCImago Journal Rankings: 0.674

 

DC FieldValueLanguage
dc.contributor.authorLi, J-
dc.contributor.authorMittal, N-
dc.contributor.authorMak, SY-
dc.contributor.authorSong, Y-
dc.contributor.authorShum, HC-
dc.date.accessioned2015-09-18T05:47:40Z-
dc.date.available2015-09-18T05:47:40Z-
dc.date.issued2015-
dc.identifier.citationJournal of Micromechanics and Microengineering: structures, devices & systems, 2015, v. 25 n. 8, article no. 084009-
dc.identifier.issn0960-1317-
dc.identifier.urihttp://hdl.handle.net/10722/217081-
dc.description.abstractIn this work, we mechanically perturb a liquid-in-liquid jet to manipulate the size and structure of the droplets formed from break-up of the jet. The induced break-up is relatively insensitive to fluctuations in the surrounding fluid flow. When the amplitude of perturbations is large and the interfacial tension of the liquid–liquid system is low, the size of the droplets can be precisely tuned by controlling the rate at which the liquid exits the tip of the dispensing nozzle through the frequency of perturbation. When applied to microfluidic devices with the appropriate geometry, our perturbation-induced droplet approach offers a strategy to manipulating droplet structures. We demonstrate that by varying the imposed perturbation frequency and phase lag, the structure of the multi-compartmental drops and the configuration of the resultant drops in the same flow condition can be manipulated. Moreover, after careful treatment of the wettability of the devices, we show that the structure of the droplets can be precisely controlled to change from single emulsion to double emulsion within the same device. The perturbation-induced droplet generation represents a new paradigm in the engineering of droplets, enhancing current droplet-based technologies for applications ranging from particle fabrication to confined micro-reactions.-
dc.languageeng-
dc.publisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/journals/jmm-
dc.relation.ispartofJournal of Micromechanics and Microengineering: structures, devices & systems-
dc.rightsJournal of Micromechanics and Microengineering: structures, devices & systems. Copyright © Institute of Physics Publishing.-
dc.rightsThis is an author-created, un-copyedited version of an article published in http://iopscience.iop.org/article/10.1088/0960-1317/25/8/084009/meta;jsessionid=3EFF7D630354C0B8C736253664D6E085.c3.iopscience.cld.iop.org. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1088/0960-1317/25/8/084009-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titlePerturbation-induced droplets for manipulating droplet structure and configuration in microfluidics-
dc.typeArticle-
dc.identifier.emailShum, HC: ashum@hku.hk-
dc.identifier.authorityShum, HC=rp01439-
dc.description.naturepostprint-
dc.identifier.doi10.1088/0960-1317/25/8/084009-
dc.identifier.hkuros250691-
dc.identifier.volume25-
dc.identifier.issue8-
dc.publisher.placeUnited Kingdom-

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