Long-range transport of magnetic microbeads using simple planar coils placed in a uniform magnetostatic field
- 22 September 2003
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 83 (12) , 2396-2398
- https://doi.org/10.1063/1.1613038
Abstract
We propose an approach for magnetic microbead transport in microfluidic channels over long-range distances using an array of simple planar coils. The latter are placed in a uniform static magnetic field, the role of which is to impose a permanent magnetic moment to the microbeads. The very small magnetic field gradient of a simple planar coil is then sufficient to displace the microbeads. The long-range displacement is assured by arranging adjacent coils in the array with spatial overlap in a three-phase actuation scheme.Keywords
This publication has 9 references indexed in Scilit:
- Microelectromagnets for the control of magnetic nanoparticlesApplied Physics Letters, 2001
- An on-chip magnetic bead separator using spiral electromagnets with semi-encapsulated permalloyBiosensors and Bioelectronics, 2001
- Active Control of Dynamic Supraparticle Structures in MicrochannelsLangmuir, 2001
- Manipulation of magnetic microbeads in suspension using micromagnetic systems fabricated with soft lithographyApplied Physics Letters, 2001
- A novel approach to the automation of clinical chemistry by controlled manipulation of magnetic particlesJournal of Magnetism and Magnetic Materials, 1999
- Use of magnetic techniques for the isolation of cellsJournal of Chromatography B: Biomedical Sciences and Applications, 1999
- A fully integrated micromachined magnetic particle separatorJournal of Microelectromechanical Systems, 1996
- Field-Induced Structures in Ferrofluid EmulsionsPhysical Review Letters, 1995