NDLI: Guiding the Nonmagnetic Particles by Magnetic Nanoparticles in a Microfluidic Device Using External Magnetic Fields

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Asmatulu, R. Zhang, B. Nuraje, N.
Copyright Year	2009
Abstract	A microfluidic device was fabricated via UV lithography technique to separate nonmagnetic fluoresbrite carboxy microspheres (∼4.5 μm) from the ferrofluids made of magnetic nanoparticles (∼10 nm). A mixture of microspheres and ferrofluid was injected to lithographically developed Y shape micro channels, and then by applying the external magnet field, the fluoresbrite carboxy microspheres and ferrofluids were clearly separated into different channels because of the magnetic force acting on those nonmagnetic particles. During the fabrication, a number of different parameters, such as UV exposure times, UV power level and photoresist thickness were tested to optimize for our needs. In addition, in the magnetic field testing, different pumping speeds, and particle concentrations associated with the various distances between the magnet and the microfluidic system were studied for an efficient separation.
Starting Page	767
Ending Page	771
Page Count	5
File Format	PDF
ISBN	9780791843857
DOI	10.1115/IMECE2009-12340
e-ISBN	9780791838631
Volume Number	Volume 12: Micro and Nano Systems, Parts A and B
Conference Proceedings	ASME 2009 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2009-11-13
Publisher Place	Lake Buena Vista, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Ferrofluid Separation of nonmagnetic particles External magnetic field Microfluidic device Nanoparticles Magnetic fields Separation (technology) Ferrofluids Microfluidics Particulate matter
Content Type	Text
Resource Type	Article

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