Particle flow control by induced dipolar interaction of superparamagnetic microbeads
| Autor: | Andreas Hütten, Frank Wittbracht, Alexander Weddemann, Alexander Auge |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Microchannel
Condensed matter physics Superparamagnetic beads Chemistry Microfluidics Particle suprastructures Particle chains Fluid mechanics Dipole-dipole interaction Condensed Matter Physics Electronic Optical and Magnetic Materials Physics::Fluid Dynamics Flow control (fluid) Dipole Flow velocity Chemical physics Materials Chemistry Magnetic nanoparticles Superparamagnetism |
| Zdroj: | Microfluidics and Nanofluidics. 10:459-463 |
| ISSN: | 1613-4990 1613-4982 |
| DOI: | 10.1007/s10404-010-0680-6 |
| Popis: | Magnetic particles diluted in liquid agglomerate in rod-like particle arrays if an external homogeneous magnetic field is applied. This work introduces a method to specifically exploit particle-particle interaction to obtain flow control of magnetic particles without changing the motion state of the carrier liquid. Experiments show the possibility to uncouple the particle flux from the motion state of liquid. We show how this method may be applied to design a microfluidic geometry in which the particle flow in a specific direction is either enabled or suppressed by the relative orientation of the fluid velocity and the external field. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink