Controllable production of Janus ligaments by AC fields in a flow‑focusing junction
We report the production of bicomponent Janus filaments of miscible aqueous fluids in a microfluidic electro-flow-focusing device under the action of an AC electric field. The production of liquid filaments can lead to the generation of microfibers by adding a subsequent process of polymerization. J...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/134979 |
| Acceso en línea: | https://hdl.handle.net/11441/134979 https://doi.org/10.1007/s10404-018-2181-y |
| Access Level: | acceso abierto |
| Palabra clave: | AC electric field Flow focusing Microfluidics Janus |
| Sumario: | We report the production of bicomponent Janus filaments of miscible aqueous fluids in a microfluidic electro-flow-focusing device under the action of an AC electric field. The production of liquid filaments can lead to the generation of microfibers by adding a subsequent process of polymerization. Janus microfibers are of paramount importance in biomedical applications such as tissue production on crimped scaffolds. We show that the filament length is a function of the frequency signal, voltage amplitude and of the viscosity and conductivity of the dispersed phase. In particular, Janus filaments with diameters ∼ 10 μm and longer than 1 mm are produced by AC voltages with frequencies below 150 kHz and a viscosity of the dispersed phase ∼ 10 cP. |
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