This title appears in the Scientific Report : 2019 

Measurement of the magnetophoretic velocity of different superparamagnetic beads
Achtsnicht, Stefan
Schönenborn, Kristina / Offenhäusser, Andreas / Krause, Hans-Joachim (Corresponding author)
Bioelektronik; ICS-8
Journal of magnetism and magnetic materials, 477 (2019) S. 244-248
Amsterdam North-Holland Publ. Co. 2019
10.1016/j.jmmm.2018.10.066
Journal Article
Physical Basis of Diseases
Controlling Configuration-Based Phenomena
Published on 2018-10-16. Available in OpenAccess from 2020-10-16.
Published on 2018-10-16. Available in OpenAccess from 2020-10-16.
Please use the identifier: http://dx.doi.org/10.1016/j.jmmm.2018.10.066 in citations.
Please use the identifier: http://hdl.handle.net/2128/21642 in citations.
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.