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 -