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- Publisher Website: 10.1088/0960-1317/25/8/084009
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Article: Perturbation-induced droplets for manipulating droplet structure and configuration in microfluidics
Title | Perturbation-induced droplets for manipulating droplet structure and configuration in microfluidics |
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Authors | |
Keywords | Droplet-based microfluidics Interfacial tension On-demand sizes On-demand structure Perturbation-induced droplets |
Issue Date | 2015 |
Publisher | Institute of Physics Publishing. The Journal's web site is located at http://www.iop.org/journals/jmm |
Citation | Journal of Micromechanics and Microengineering, 2015, v. 25 n. 8, article no. 084009 How to Cite? |
Abstract | In 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 Identifier | http://hdl.handle.net/10722/217081 |
ISSN | 2023 Impact Factor: 2.4 2023 SCImago Journal Rankings: 0.476 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Li, J | - |
dc.contributor.author | Mittal, N | - |
dc.contributor.author | Mak, SY | - |
dc.contributor.author | Song, Y | - |
dc.contributor.author | Shum, HC | - |
dc.date.accessioned | 2015-09-18T05:47:40Z | - |
dc.date.available | 2015-09-18T05:47:40Z | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | Journal of Micromechanics and Microengineering, 2015, v. 25 n. 8, article no. 084009 | - |
dc.identifier.issn | 0960-1317 | - |
dc.identifier.uri | http://hdl.handle.net/10722/217081 | - |
dc.description.abstract | In 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.language | eng | - |
dc.publisher | Institute of Physics Publishing. The Journal's web site is located at http://www.iop.org/journals/jmm | - |
dc.relation.ispartof | Journal of Micromechanics and Microengineering | - |
dc.rights | This is an author-created, un-copyedited version of an article published in Journal of Micromechanics and Microengineering. 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 https://doi.org/10.1088/0960-1317/25/8/084009 | - |
dc.subject | Droplet-based microfluidics | - |
dc.subject | Interfacial tension | - |
dc.subject | On-demand sizes | - |
dc.subject | On-demand structure | - |
dc.subject | Perturbation-induced droplets | - |
dc.title | Perturbation-induced droplets for manipulating droplet structure and configuration in microfluidics | - |
dc.type | Article | - |
dc.identifier.email | Shum, HC: ashum@hku.hk | - |
dc.identifier.authority | Shum, HC=rp01439 | - |
dc.description.nature | postprint | - |
dc.identifier.doi | 10.1088/0960-1317/25/8/084009 | - |
dc.identifier.scopus | eid_2-s2.0-84938303276 | - |
dc.identifier.hkuros | 250691 | - |
dc.identifier.hkuros | 276920 | - |
dc.identifier.volume | 25 | - |
dc.identifier.issue | 8 | - |
dc.identifier.spage | article no. 084009 | - |
dc.identifier.epage | article no. 084009 | - |
dc.identifier.isi | WOS:000358360700010 | - |
dc.publisher.place | United Kingdom | - |
dc.customcontrol.immutable | csl 171020 | - |
dc.identifier.issnl | 0960-1317 | - |