Magnetizing Polymer Particles with a Solvent-Free Single Stage Process Using Superparamagnetic Iron Oxide Nanoparticles (SPION)s

Düsenberg, Björn; Groppe, Philipp; Müssig, Stephan; Schmidt, Jochen; Bück, Andreas

doi:10.3390/polym14194178

Cited by 4 publications

(1 citation statement)

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“…The superparamagnetic particles are tiny magnetic particles (form of microbeads), they exhibit unique magnetic properties, are used by lab-on-chip [10]- [12], for applications in biotechnology, pharmaceuticals, medicine and industry. This type of device was born thirty years ago and is now experiencing tremendous development, through miniaturization of biosensors [13], [14].…”

Section: Introductionmentioning

confidence: 99%

Development of spiral square coils for magnetic labelling detection in microfluidic systems

Feddag,

Mekkakia-Maaza,

Lakhdari

2023

IJECE

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Due to the development of microfluidic systems biomedical microelectromechanical systems (BioMEMS) for magnetic labelling detection by magnetic microbeads circling in microfluidic channels, we used the magnetic field created by microcoils. The magnetic field associated with the electric current, but with negatively affects if its value increases too much. Handling bio-species in the microfluidic chip requires that the temperature maintained to keep the cells to prevent their destruction. In this paper we have described the spiral square coil design of different structures to produce an effective magnetic flux density. The simulation of the magnetic flux density is carried out with the help of the COMSOL software. We have presented an optimization of the geometric parameters of the microcoil for a better performance and a miniaturization of the structure with copper wire section S=25 µm<sup>2</sup> and inter-wire space a=5 µm. We have also developed this microcoil by adding a ferromagnetic core to the inner center, the results obtained in this work shown that the magnetic flux density increases around 1.07 times in Bx and 1.45 times in Bz. This new approach in designing a microcoil allows to obtaining a fast trapping of the microbeads and a highly sensitive biological element detection and avoiding increase heat ratio in microfluidic systems.

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Section: Introductionmentioning

confidence: 99%