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- Publisher Website: 10.1039/d3sm00233k
- Scopus: eid_2-s2.0-85159098309
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Article: Flows of a nonequilibrated aqueous two-phase system in a microchannel
Title | Flows of a nonequilibrated aqueous two-phase system in a microchannel |
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Authors | |
Issue Date | 24-Apr-2023 |
Publisher | Royal Society of Chemistry |
Citation | Soft Matter, 2023, v. 19, n. 20, p. 3551-3561 How to Cite? |
Abstract | Liquid-liquid phase separation is a rich and dynamic process, which recently has gained new interest, especially in biology and for material synthesis. In this work, we experimentally show that co-flow of a nonequilibrated aqueous two-phase system within a planar flow-focusing microfluidic device results in a three-dimensional flow, as the two nonequilibrated solutions move downstream along the length of the microchannel. After the system reaches steady-state, invasion fronts from the outer stream are formed along the top and bottom walls of the microfluidic device. The invasion fronts advance towards the center of the channel, until they merge. We first show by tuning the concentration of polymer species within the system that the formation of these fronts is due to liquid-liquid phase separation. Moreover, the rate of invasion from the outer stream increases with increasing polymer concentrations in the streams. We hypothesize the invasion front formation and growth is driven by Marangoni flow induced by the polymer concentration gradient along the width of the channel, as the system is undergoing phase separation. In addition, we show how at various downstream positions the system reaches its steady-state configuration once the two fluid streams flow side-by-side in the channel. |
Persistent Identifier | http://hdl.handle.net/10722/338550 |
ISSN | 2023 Impact Factor: 2.9 2023 SCImago Journal Rankings: 0.783 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Abbasi, N | - |
dc.contributor.author | Nunes, JK | - |
dc.contributor.author | Pan, Z | - |
dc.contributor.author | Dethe, T | - |
dc.contributor.author | Shum, HC | - |
dc.contributor.author | Košmrlj, A | - |
dc.contributor.author | Stone, HA | - |
dc.date.accessioned | 2024-03-11T10:29:44Z | - |
dc.date.available | 2024-03-11T10:29:44Z | - |
dc.date.issued | 2023-04-24 | - |
dc.identifier.citation | Soft Matter, 2023, v. 19, n. 20, p. 3551-3561 | - |
dc.identifier.issn | 1744-683X | - |
dc.identifier.uri | http://hdl.handle.net/10722/338550 | - |
dc.description.abstract | <p>Liquid-liquid phase separation is a rich and dynamic process, which recently has gained new interest, especially in biology and for material synthesis. In this work, we experimentally show that co-flow of a nonequilibrated aqueous two-phase system within a planar flow-focusing microfluidic device results in a three-dimensional flow, as the two nonequilibrated solutions move downstream along the length of the microchannel. After the system reaches steady-state, invasion fronts from the outer stream are formed along the top and bottom walls of the microfluidic device. The invasion fronts advance towards the center of the channel, until they merge. We first show by tuning the concentration of polymer species within the system that the formation of these fronts is due to liquid-liquid phase separation. Moreover, the rate of invasion from the outer stream increases with increasing polymer concentrations in the streams. We hypothesize the invasion front formation and growth is driven by Marangoni flow induced by the polymer concentration gradient along the width of the channel, as the system is undergoing phase separation. In addition, we show how at various downstream positions the system reaches its steady-state configuration once the two fluid streams flow side-by-side in the channel.</p> | - |
dc.language | eng | - |
dc.publisher | Royal Society of Chemistry | - |
dc.relation.ispartof | Soft Matter | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.title | Flows of a nonequilibrated aqueous two-phase system in a microchannel | - |
dc.type | Article | - |
dc.identifier.doi | 10.1039/d3sm00233k | - |
dc.identifier.scopus | eid_2-s2.0-85159098309 | - |
dc.identifier.volume | 19 | - |
dc.identifier.issue | 20 | - |
dc.identifier.spage | 3551 | - |
dc.identifier.epage | 3561 | - |
dc.identifier.eissn | 1744-6848 | - |
dc.identifier.isi | WOS:000981611600001 | - |
dc.identifier.issnl | 1744-683X | - |