Dynamics of Nonmagnetic and Magnetic Emulsions in Microchannels of Various Materials

The formation of droplets in microchannels (droplet microfluidics) has a large number of applications, such as in micro-dosing and gas meters. This paper considers the dynamics of direct and inverse emulsions based on water, polydimethylsiloxane, and synthetic and mineral oil in microfluidic chips b...

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Bibliographic Details
Published in:Fluids (Basel) 2023-01, Vol.8 (2), p.42
Main Authors: Kalyuzhnaya, Dariya, Sokolov, Evgeniy, Vasilyeva, Anastasia, Sutarina, Irina, Ryapolov, Petr
Format: Article
Language:English
Subjects:
droplet flow
Droplets
emulsion
Emulsions
Field strength
Flow rates
Flow velocity
Fluid dynamics
Fluid flow
Fluids
Gas meters
Hydrodynamics
Influence
magnetic field
Magnetic fields
Magnetic fluids
Microchannels
microfluidic chip
Microfluidics
Mineral oils
Polydimethylsiloxane
Sandwich structures
Surfactants
Wettability
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Summary:The formation of droplets in microchannels (droplet microfluidics) has a large number of applications, such as in micro-dosing and gas meters. This paper considers the dynamics of direct and inverse emulsions based on water, polydimethylsiloxane, and synthetic and mineral oil in microfluidic chips based on two technologies: glass–parafilm–glass sandwich structures and removable scaffold in a silicone compound. It is shown that wettability, roughness and chip wall material; channel thickness; magnetic fluid flow rate; and magnetic field strength affect the size of emulsion droplets formed in a microfluidic chip. The addition of another mechanism for regulating the hydrodynamics of emulsions using a magnetic field opens up new possibilities for the development of promising devices.
ISSN:2311-5521
2311-5521
DOI:10.3390/fluids8020042