Multiple flow profiles for two-phase flow in single microfluidic channels through site-selective channel coating
An approach to control two-phase flow systems in a poly(dimethylsiloxane) (PDMS) microfluidic device using spatially selective surface modification is demonstrated. Side-by-side flows of ethanol : water solutions containing different polymers are used to selectively modify both sides of a channel by...
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| Veröffentlicht in: | Lab on a chip 2011-01, Vol.11 (12), p.2030-2034 |
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| container_end_page | 2034 |
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| container_issue | 12 |
| container_start_page | 2030 |
| container_title | Lab on a chip |
| container_volume | 11 |
| creator | Logtenberg, Hella Lopez-Martinez, Maria J Feringa, Ben L Browne, Wesley R Verpoorte, Elisabeth |
| description | An approach to control two-phase flow systems in a poly(dimethylsiloxane) (PDMS) microfluidic device using spatially selective surface modification is demonstrated. Side-by-side flows of ethanol : water solutions containing different polymers are used to selectively modify both sides of a channel by laminar flow patterning. Introduction of air pockets during modification allows for control over the length of the channel section that is modified. This approach makes it possible to achieve slug flow and side-by-side flow of water : 1-octanol simultaneously within the same PDMS channel, without the need of additional structural elements. A key finding is that conditioning of the PDMS channels with 1-octanol before polymer deposition is crucial to achieving stable side-by-side flows. |
| doi_str_mv | 10.1039/c1lc20012g |
| format | Article |
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| fulltext | fulltext |
| identifier | ISSN: 1473-0197 |
| ispartof | Lab on a chip, 2011-01, Vol.11 (12), p.2030-2034 |
| issn | 1473-0197 1473-0189 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_963898307 |
| source | MEDLINE; Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Channels Devices Dimethylpolysiloxanes - chemistry Ethanol - chemistry Ethyl alcohol Laminar flow Microfluidic Analytical Techniques - instrumentation Microfluidic Analytical Techniques - methods Microfluidics Molecular Structure Polymers Rosaniline Dyes - chemistry Silicone resins Slug flow Surface Properties Water - chemistry |
| title | Multiple flow profiles for two-phase flow in single microfluidic channels through site-selective channel coating |
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