Droplet group production in an AC electro-flow-focusing microdevice

Elena Castro-Hernández (Corresponding Author), Pablo García-Sánchez, Alfonso Velencoso-Gómez, Antonio Silas-Jurado, David Fernandez Rivas, Antonio Ramos

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)
97 Downloads (Pure)

Abstract

We report the production of droplet groups with a controlled number of drops in a microfluidic electro-flow-focusing device under the action of an AC electric field. This regime appears for moderate voltages (500–700 V peak-to-peak) and signal frequencies between 25 and 100 Hz, much smaller than the droplet production rate (∼500 Hz). For this experimental condition the production frequency of a droplet package is twice the signal frequency. Since the continuous phase flow in the microchannel is a Hagen–Poiseuille flow, the smaller droplets of a group move faster than the bigger ones leading to droplet clustering downstream.
Original languageEnglish
Article number158
Number of pages5
JournalMicrofluidics and nanofluidics
Volume21
DOIs
Publication statusPublished - 2017

Fingerprint

alternating current
microchannels
Microchannels
Microfluidics
electric fields
electric potential
Electric fields
Electric potential

Cite this

Castro-Hernández, E., García-Sánchez, P., Velencoso-Gómez, A., Silas-Jurado, A., Fernandez Rivas, D., & Ramos, A. (2017). Droplet group production in an AC electro-flow-focusing microdevice. Microfluidics and nanofluidics, 21, [158]. https://doi.org/10.1007/s10404-017-1995-3
Castro-Hernández, Elena ; García-Sánchez, Pablo ; Velencoso-Gómez, Alfonso ; Silas-Jurado, Antonio ; Fernandez Rivas, David ; Ramos, Antonio. / Droplet group production in an AC electro-flow-focusing microdevice. In: Microfluidics and nanofluidics. 2017 ; Vol. 21.
@article{3d928f6c7e3d481884e9c60418112d01,
title = "Droplet group production in an AC electro-flow-focusing microdevice",
abstract = "We report the production of droplet groups with a controlled number of drops in a microfluidic electro-flow-focusing device under the action of an AC electric field. This regime appears for moderate voltages (500–700 V peak-to-peak) and signal frequencies between 25 and 100 Hz, much smaller than the droplet production rate (∼500 Hz). For this experimental condition the production frequency of a droplet package is twice the signal frequency. Since the continuous phase flow in the microchannel is a Hagen–Poiseuille flow, the smaller droplets of a group move faster than the bigger ones leading to droplet clustering downstream.",
author = "Elena Castro-Hern{\'a}ndez and Pablo Garc{\'i}a-S{\'a}nchez and Alfonso Velencoso-G{\'o}mez and Antonio Silas-Jurado and {Fernandez Rivas}, David and Antonio Ramos",
year = "2017",
doi = "10.1007/s10404-017-1995-3",
language = "English",
volume = "21",
journal = "Microfluidics and nanofluidics",
issn = "1613-4982",
publisher = "Springer",

}

Castro-Hernández, E, García-Sánchez, P, Velencoso-Gómez, A, Silas-Jurado, A, Fernandez Rivas, D & Ramos, A 2017, 'Droplet group production in an AC electro-flow-focusing microdevice' Microfluidics and nanofluidics, vol. 21, 158. https://doi.org/10.1007/s10404-017-1995-3

Droplet group production in an AC electro-flow-focusing microdevice. / Castro-Hernández, Elena (Corresponding Author); García-Sánchez, Pablo; Velencoso-Gómez, Alfonso; Silas-Jurado, Antonio; Fernandez Rivas, David ; Ramos, Antonio.

In: Microfluidics and nanofluidics, Vol. 21, 158, 2017.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Droplet group production in an AC electro-flow-focusing microdevice

AU - Castro-Hernández, Elena

AU - García-Sánchez, Pablo

AU - Velencoso-Gómez, Alfonso

AU - Silas-Jurado, Antonio

AU - Fernandez Rivas, David

AU - Ramos, Antonio

PY - 2017

Y1 - 2017

N2 - We report the production of droplet groups with a controlled number of drops in a microfluidic electro-flow-focusing device under the action of an AC electric field. This regime appears for moderate voltages (500–700 V peak-to-peak) and signal frequencies between 25 and 100 Hz, much smaller than the droplet production rate (∼500 Hz). For this experimental condition the production frequency of a droplet package is twice the signal frequency. Since the continuous phase flow in the microchannel is a Hagen–Poiseuille flow, the smaller droplets of a group move faster than the bigger ones leading to droplet clustering downstream.

AB - We report the production of droplet groups with a controlled number of drops in a microfluidic electro-flow-focusing device under the action of an AC electric field. This regime appears for moderate voltages (500–700 V peak-to-peak) and signal frequencies between 25 and 100 Hz, much smaller than the droplet production rate (∼500 Hz). For this experimental condition the production frequency of a droplet package is twice the signal frequency. Since the continuous phase flow in the microchannel is a Hagen–Poiseuille flow, the smaller droplets of a group move faster than the bigger ones leading to droplet clustering downstream.

U2 - 10.1007/s10404-017-1995-3

DO - 10.1007/s10404-017-1995-3

M3 - Article

VL - 21

JO - Microfluidics and nanofluidics

JF - Microfluidics and nanofluidics

SN - 1613-4982

M1 - 158

ER -