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Conference Paper: Dynamics of jet breakup induced by perturbation
Title | Dynamics of jet breakup induced by perturbation |
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Authors | |
Issue Date | 2014 |
Publisher | American Physical Society. The Journal's web site is located at http://www.aps.org/meetings/baps/ |
Citation | The 67th Annual Meeting of the American Physical Society (APS) Division of Fluid Dynamics, San Francisco, CA, 23–25 November 2014. In Bulletin of the American Physical Society, 2014, v. 59 n. 20, Abstract: E10.00005 How to Cite? |
Abstract | We study the breakup of jet to form droplets, as induced by controlled perturbation, in a microchannel. Controlled mechanical perturbation is introduced to the tubing through which the jet phase is injected into the device, which is monitored under high-speed optical imaging. We measure the frequency of droplet formation and the sizes of the droplets as the frequency and amplitude of the perturbation is varied. Droplets can be induced to form at the perturbation frequency only above a critical frequency and amplitude. In this manner, the droplet size can be precisely controlled. The amplitude needed to induce breakup decreases as the interfacial tension of the system is lowered. Moreover, by selectively varying the wettability of the inner wall of the channel, double emulsion droplets can be generated in one step by applying large-amplitude perturbation of the jet phase. Our work demonstrates the potential of using controlled perturbation to generate droplets with tunable size and shapes, with implications on new designs of liquid dispensing nozzles. |
Description | Session E10: Microscale Flows: Formation and Dynamics of Drops - Abstract: E10.00005 (Abstract ID: BAPS.2014.DFD.E10.5) |
Persistent Identifier | http://hdl.handle.net/10722/256123 |
ISSN |
DC Field | Value | Language |
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dc.contributor.author | Shum, HC | - |
dc.contributor.author | Li, J | - |
dc.contributor.author | Mak, SY | - |
dc.date.accessioned | 2018-07-17T09:53:45Z | - |
dc.date.available | 2018-07-17T09:53:45Z | - |
dc.date.issued | 2014 | - |
dc.identifier.citation | The 67th Annual Meeting of the American Physical Society (APS) Division of Fluid Dynamics, San Francisco, CA, 23–25 November 2014. In Bulletin of the American Physical Society, 2014, v. 59 n. 20, Abstract: E10.00005 | - |
dc.identifier.issn | 0003-0503 | - |
dc.identifier.uri | http://hdl.handle.net/10722/256123 | - |
dc.description | Session E10: Microscale Flows: Formation and Dynamics of Drops - Abstract: E10.00005 (Abstract ID: BAPS.2014.DFD.E10.5) | - |
dc.description.abstract | We study the breakup of jet to form droplets, as induced by controlled perturbation, in a microchannel. Controlled mechanical perturbation is introduced to the tubing through which the jet phase is injected into the device, which is monitored under high-speed optical imaging. We measure the frequency of droplet formation and the sizes of the droplets as the frequency and amplitude of the perturbation is varied. Droplets can be induced to form at the perturbation frequency only above a critical frequency and amplitude. In this manner, the droplet size can be precisely controlled. The amplitude needed to induce breakup decreases as the interfacial tension of the system is lowered. Moreover, by selectively varying the wettability of the inner wall of the channel, double emulsion droplets can be generated in one step by applying large-amplitude perturbation of the jet phase. Our work demonstrates the potential of using controlled perturbation to generate droplets with tunable size and shapes, with implications on new designs of liquid dispensing nozzles. | - |
dc.language | eng | - |
dc.publisher | American Physical Society. The Journal's web site is located at http://www.aps.org/meetings/baps/ | - |
dc.relation.ispartof | American Physical Society Bulletin | - |
dc.title | Dynamics of jet breakup induced by perturbation | - |
dc.type | Conference_Paper | - |
dc.identifier.email | Shum, HC: ashum@hku.hk | - |
dc.identifier.authority | Shum, HC=rp01439 | - |
dc.identifier.hkuros | 250806 | - |
dc.identifier.volume | 59 | - |
dc.identifier.issue | 20 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 0003-0503 | - |