Control of Ferrofluid Droplets in Microchannels by Uniform Magnetic Fields

Control of Ferrofluid Droplets in Microchannels by Uniform Magnetic Fields

Magnetic droplets are versatile tools for a range of lab-on-a-chip (LoC) applications. The combination of a uniform magnetic field and magnetic droplet offers wireless and programmable manipulation. We performed LoC experiments and numerical studies on ferrofluid droplets under the influence of a un...

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Bibliographic Details
Main Authors: Varma, Vijaykumar B., Ray, Ayan, Wang, Zhaomeng, Wang, Zhiping, Wu, Ruige, Jayaneel, P. J., Sudharsan, Natteri Mangadu, Ramanujan, Raju V.
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2016
Subjects:
Magnetic fields
droplet micromagnetofluidics
ferrofluid droplets
Lab-on-a-chip
Magnetochemistry
Online Access:https://hdl.handle.net/10356/84112
http://hdl.handle.net/10220/41620
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Institution: Nanyang Technological University
Language: English
Description
Summary:Magnetic droplets are versatile tools for a range of lab-on-a-chip (LoC) applications. The combination of a uniform magnetic field and magnetic droplet offers wireless and programmable manipulation. We performed LoC experiments and numerical studies on ferrofluid droplets under the influence of a uniform magnetic field. The dynamic behavior of flowing ferrofluid droplets was examined. The droplet size, shape, inter-droplet spacing and velocity could be controlled by tuning the magnetic susceptibility of the ferrofluid, the viscosity of the carrier medium, and the flow rates. Our droplet-based micromagnetofluidic numerical model is in good agreement with our experiments. These studies are useful for magnetic droplet control and mixing in a LoC using a uniform magnetic field.

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