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Conference Paper: Demonstration of syringe-pump-induced disturbance in microfluidic system with low interfacial tension
Title | Demonstration of syringe-pump-induced disturbance in microfluidic system with low interfacial tension |
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Authors | |
Issue Date | 2014 |
Publisher | Hong Kong University of Science and Technology. |
Citation | Frontiers of Soft Matter Physics: from Non-equilibrium Dynamics to Active Matter, Hong Kong, China, 20-22 January 2014 How to Cite? |
Abstract | Syringe pump provides precise and constant flow rates so it is widely used in microfluidic research and applications. Most syringe pumps are mechanically driven and introduce fluctuations or pulses to the inlet flow and thus affect the steadiness of the flow. However, to the best of our knowledge, no evidences confirmed that these are really induced by syringe pumps. Here we introduce a robust visual detection of the unsteadiness induced by the stepping motor in a syringe pump, in form of ripples on the interface of an aqueous two-phase system which has low interfacial tension.
We use a typical glass capillary device to generate a co-flow of two immiscible phases in our experiments [1]. The ripples are found to exhibit the same frequency as that delivered by the stepping motor of the syringe pump which drives the inner fluid, named as fpump, for various flow rates Q, syringe diameters D and advancing step sizes s, according to fpump = 4Q/(πD2s).
The experimental results suggest that the low interfacial tension system can reflect the disturbance aroused from the inner pump, thus give an insight into understanding the fluctuation that syringe pumps induces and provide a way to test whether the unsteadiness in microfluidic system is related to syringe pump or not. |
Description | Junior Scientist, Postdoc and Student Workshops Talk #21 |
Persistent Identifier | http://hdl.handle.net/10722/201245 |
DC Field | Value | Language |
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dc.contributor.author | Mak, SY | en_US |
dc.contributor.author | Li, Z | en_US |
dc.contributor.author | Shum, HC | - |
dc.date.accessioned | 2014-08-21T07:19:43Z | - |
dc.date.available | 2014-08-21T07:19:43Z | - |
dc.date.issued | 2014 | en_US |
dc.identifier.citation | Frontiers of Soft Matter Physics: from Non-equilibrium Dynamics to Active Matter, Hong Kong, China, 20-22 January 2014 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/201245 | - |
dc.description | Junior Scientist, Postdoc and Student Workshops | - |
dc.description | Talk #21 | - |
dc.description.abstract | Syringe pump provides precise and constant flow rates so it is widely used in microfluidic research and applications. Most syringe pumps are mechanically driven and introduce fluctuations or pulses to the inlet flow and thus affect the steadiness of the flow. However, to the best of our knowledge, no evidences confirmed that these are really induced by syringe pumps. Here we introduce a robust visual detection of the unsteadiness induced by the stepping motor in a syringe pump, in form of ripples on the interface of an aqueous two-phase system which has low interfacial tension. We use a typical glass capillary device to generate a co-flow of two immiscible phases in our experiments [1]. The ripples are found to exhibit the same frequency as that delivered by the stepping motor of the syringe pump which drives the inner fluid, named as fpump, for various flow rates Q, syringe diameters D and advancing step sizes s, according to fpump = 4Q/(πD2s). The experimental results suggest that the low interfacial tension system can reflect the disturbance aroused from the inner pump, thus give an insight into understanding the fluctuation that syringe pumps induces and provide a way to test whether the unsteadiness in microfluidic system is related to syringe pump or not. | - |
dc.language | eng | en_US |
dc.publisher | Hong Kong University of Science and Technology. | en_US |
dc.relation.ispartof | Frontiers of Soft Matter Physics: from Non-equilibrium Dynamics to Active Matter | en_US |
dc.title | Demonstration of syringe-pump-induced disturbance in microfluidic system with low interfacial tension | en_US |
dc.type | Conference_Paper | en_US |
dc.identifier.email | Shum, HC: ashum@hku.hk | en_US |
dc.identifier.authority | Shum, HC=rp01439 | en_US |
dc.description.nature | abstract | - |
dc.identifier.hkuros | 233156 | en_US |
dc.identifier.hkuros | 233172 | - |
dc.publisher.place | Hong Kong | en_US |