Article
Droplet group production in an AC electro- flow focusing microdevice
Author/s | Castro Hernández, Elena De
García Sánchez, Pablo Velencoso Gómez, Alfonso Silas Jurado, Antonio Fernández Rivas, David Ramos Reyes, Antonio |
Department | Universidad de Sevilla. Departamento de Ingeniería Aeroespacial y Mecánica de Fluidos Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo |
Publication Date | 2017-09 |
Deposit Date | 2022-06-07 |
Published in |
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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 ... 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 conditions 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. |
Funding agencies | Ministerio de Economía y Competitividad (MINECO). España Junta de Andalucía |
Project ID. | DPI2013-46485-C3-1-R
FIS2014-54539- P P11-FQM-7919 |
Citation | Castro Hernández, E.D., García Sánchez, P., Velencoso Gómez, A., Silas Jurado, A., Fernández Rivas, D. y Ramos Reyes, A. (2017). Droplet group production in an AC electro- flow focusing microdevice. Microfluidics and Nanofluidics, 21 (10), 158. |
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