Measurement of the magnetophoretic velocity of different superparamagnetic beads

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:477

Article

Achtsnicht, Stefan¹  Schoenenborn, Kristina¹  Offenhaeusser, Andreas¹  Krause, Hans-Joachim¹ 

[1] Forschungszentrum Julich, Inst Complex Syst, Bioelect ICS 8, Julich, Germany

关键词: Magnetophoretic velocity;    Superparamagnetic bead;    Magnetic tweezers;    Magnetic separation;    Magnetic actuation;   

DOI  :  10.1016/j.jmmm.2018.10.066

来源: Elsevier

【 摘 要 】

The movement of magnetic beads due to a magnetic field gradient is of great interest in different application fields. In this report we present a technique based on a magnetic tweezers setup to measure the velocity factor of magnetically actuated individual superparamagnetic beads in a fluidic environment. Several beads can be tracked simultaneously in order to gain and improve statistics. Furthermore we show our results for different beads with hydrodynamic diameters between 200 and 1000 nm from diverse manufacturers. These measurement data can, for example, be used to determine design parameters for a magnetic separation system, like maximum flow rate and minimum separation time, or to select suitable beads for fixed experimental requirements.

【 授权许可】

Free