Fabrication of two-dimensional ferrofluid microdroplet lattices in a microfluidic channel

In this paper, we investigated the influences of magnetic field on the ferrofluid droplet generation and the arrangement of the collected droplets in a T-junction microfluidic. Our study includes the field-dependent droplet generation rate, droplet size, as well as the spatial density of the self-as...

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Bibliographic Details
Published in:Journal of applied physics 2014-05, Vol.115 (17)
Main Authors: Lee, Chiun-Peng, Lan, Ting-Sheng, Lai, Mei-Feng
Format: Article
Language:English
Subjects:
Capillary flow
Droplets
Ferrofluids
Field strength
Fluid dynamics
Fluid flow
Lattices
Magnetic fields
Magnetic properties
Magnetism
Self-assembly
Spatial analysis
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Summary:In this paper, we investigated the influences of magnetic field on the ferrofluid droplet generation and the arrangement of the collected droplets in a T-junction microfluidic. Our study includes the field-dependent droplet generation rate, droplet size, as well as the spatial density of the self-assembled droplet collections that were analyzed under the conditions of constant fluid flow rates and capillary number, and all of the field-dependent properties were found inversely proportional to the applied magnetic field strength. In addition, the droplet merging was also able to be avoided by the induced repulsive magnetic force between ferrofluid droplets.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4867964