Controllable production of Janus ligaments by AC fields in a flow-focusing junction

Elena De Castro-Hernández (Corresponding Author), Pablo García-Sánchez, Marta Leon Rodriguez, David Fernandez Rivas, Antonio Ramos (Corresponding Author)

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

We report the production of bicomponent Janus filaments of miscible aqueous fluids in a micro- fluidic 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 microfi- bers are of paramount importance in biomedical appli- cations 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 visco- sity and conductivity of the dispersed phase. In par- ticular, Janus filaments with diameters ∼ 10μm and longer than 1 mm are produced by AC voltages with frequencies below 150 kHz and a viscosity of the dis- persed phase ∼ 10 cP.
LanguageEnglish
Number of pages5
JournalMicrofluidics and nanofluidics
Volume23
Issue number10
DOIs
Publication statusPublished - Jan 2019

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Janus
ligaments
Ligaments
filaments
alternating current
microfibers
Viscosity
Fluidics
Electric potential
viscosity
Scaffolds
fluidics
electric potential
Polymerization
Electric fields
Tissue
Fluids
polymerization
Liquids
conductivity

Cite this

De Castro-Hernández, Elena ; García-Sánchez, Pablo ; Leon Rodriguez, Marta ; Fernandez Rivas, David ; Ramos, Antonio. / Controllable production of Janus ligaments by AC fields in a flow-focusing junction. In: Microfluidics and nanofluidics. 2019 ; Vol. 23, No. 10.
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Controllable production of Janus ligaments by AC fields in a flow-focusing junction. / De Castro-Hernández, Elena (Corresponding Author); García-Sánchez, Pablo; Leon Rodriguez, Marta; Fernandez Rivas, David ; Ramos, Antonio (Corresponding Author).

In: Microfluidics and nanofluidics, Vol. 23, No. 10, 01.2019.

Research output: Contribution to journalArticleAcademicpeer-review

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AB - We report the production of bicomponent Janus filaments of miscible aqueous fluids in a micro- fluidic 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 microfi- bers are of paramount importance in biomedical appli- cations 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 visco- sity and conductivity of the dispersed phase. In par- ticular, Janus filaments with diameters ∼ 10μm and longer than 1 mm are produced by AC voltages with frequencies below 150 kHz and a viscosity of the dis- persed phase ∼ 10 cP.

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