Microfluidics and Nanofluidics

, Volume 9, Issue 4, pp 1003–1009

Continuous separation of non-magnetic particles inside ferrofluids

Short Communication

DOI: 10.1007/s10404-010-0616-1

Cite this article as:
Zhu, T., Marrero, F. & Mao, L. Microfluid Nanofluid (2010) 9: 1003. doi:10.1007/s10404-010-0616-1

Abstract

We present a novel and label-free continuous flow non-magnetic microparticle separation scheme in a microfluidic device under static magnetic fields. The separation process is conducted inside water-based ferrofluids. We exploit the difference in particle sizes to achieve binary separation of microparticles with high throughput. We demonstrate size-based separation (1 and 9.9 μm, 1.9 and 9.9 μm, 3.1 and 9.9 μm) of microparticles with a minimum of 105 particles/h throughput and close to 100% separation efficiency.

Keywords

Particle separation Ferrofluid Magnetic buoyancy force 

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  1. 1.Department of Chemistry, Nanoscale Science and Engineering CenterThe University of GeorgiaAthensUSA
  2. 2.Faculty of Engineering, Nanoscale Science and Engineering CenterThe University of GeorgiaAthensUSA

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