Project: Exploiting the internal dynamics of inhomogeneous magnetization states for technological and biomedical applications.
2021-10-01 – 2025-09-30
- Abstract
The interplay of different interactions gives rise to complex magnetization structures on the nanoscale, like vortices and skyrmions. These structures can display internal inhomogenous dynamics, which is for instance the case in the technologically relevant regime where the driving forces are relatively weak compared to thermal excitations. In this project, we will exploit these inhomogeneous dynamics with the aim to improve a state-of-the-art biomedical and technological application, in which these internal dynamics are unexploited to this day. To reach this aim, we will use a computationally challenging micromagnetic simulation approach, complemented by experimental results obtained within the framework of two international collaborations. 1. In collaboration with PTB Berlin, Germany, we will unravel the relations that describe the heating performance of non-uniformly magnetized nanoparticles with a vortex state (which can be a factor 10 higher than for a uniform magnetization) as function of their structural properties to optimize their use in the cancer therapy “magnetic particle hyperthermia”. 2. In collaboration with MIT, USA, we will realize an efficient driving mechanism for skyrmions, that operates on the rectification of random thermal fluctuations into a directed motion, without any driving currents. These structures are currently considered at the forefront of stochastic logic devices, in which our breakthrough will strongly decrease the power consumption.
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- Journal Article
- A1
- open access
Magnetic heating of interacting nanoparticles under different driving field waveforms
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- Journal Article
- A1
- open access
Comparing magnetization fluctuations and dissipation in suspended magnetic nanoparticle ensembles
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- Journal Article
- A1
- open access
Tutorial : simulating modern magnetic material systems in mumax3
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- Journal Article
- A1
- open access
Spatial analysis of physical reservoir computers
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Thermal noise magnetometry as an emerging magnetic characterization technique
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- Journal Article
- A1
- open access
Estimating the heating of complex nanoparticle aggregates for magnetic hyperthermia
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- Journal Article
- A1
- open access
The impact of temperature on thermal fluctuations in magnetic nanoparticle systems
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- Journal Article
- A1
- open access
Monitoring magnetic nanoparticle clustering and immobilization with thermal noise magnetometry using optically pumped magnetometers
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- Journal Article
- A1
- open access
Audio classification with skyrmion reservoirs
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- Journal Article
- A1
- open access
Micromagnetic simulation of neutron scattering from spherical nanoparticles : effect of pore-type defects