Optimizing the trapping and resonance-based detection of magnetic nanoparticles in ferromagnetic nanostructures with microfluidics

Reyne Dowling

Research output: ThesisDoctoral Thesis

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Abstract

I have investigated the optimal conditions for the capture and ferromagnetic resonance-based sensing of magnetic nanoparticles (MNPs) with antidot arrays hollowed into Permalloy thin films. Numerical simulations and experiments indicate that the distribution of MNPs significantly impacts the sensitivity of the devices. The distributions of nanoparticles resulting from droplets and microfluidic flows were found to be strongly influenced by an external magnetic field. In particular, afield applied parallel to the film attracts most MNPs into the antidot holes. Finally, I have demonstrated improved resonance-based MNP sensing in planar micro resonator devices integrated with microfluidic channels fabricated using 3D printed moulds.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • The University of Western Australia
Supervisors/Advisors
  • Kostylev, Mikhail, Supervisor
  • Samarin, Sergey, Supervisor
Thesis sponsors
Award date17 Dec 2024
DOIs
Publication statusUnpublished - 2024

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