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  4. Hollow Superparamagnetic Nanoparticle-Based Microballoons for Mechanical Force Monitoring by Magnetic Particle Spectroscopy
 
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2019
Journal Article
Titel

Hollow Superparamagnetic Nanoparticle-Based Microballoons for Mechanical Force Monitoring by Magnetic Particle Spectroscopy

Abstract
The determination of induced mechanical forces in ball mills is an ongoing problem, which is so far mainly addressed by simulations. Herein, we suggest utilizing superparamagnetic microballoons as sensor particles for mechanical stress. The defined assembly of superparamagnetic nanoparticles yields microballoons with hollow cores, which makes them susceptible to mechanical forces. It is shown that the hollow structure is continuously fragmented under static or dynamic force application. By use of magnetic particle spectroscopy, these structural changes are readily detected and enable the quantification of the applied mechanical forces in ball mills.
Author(s)
Wintzheimer, Susanne
Müssig, Stephan
Wenderoth, Sarah
Prieschl, Johannes
Granath, Tim
Fidler, Florian
Haddad, Daniel
Mandel, Karl
Zeitschrift
ACS applied nano materials
Thumbnail Image
DOI
10.1021/acsanm.9b01693
Language
English
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Fraunhofer-Institut für Silicatforschung ISC
Tags
  • ball milling

  • magnetic particle spe...

  • magnetic particles

  • sensor

  • silica supraparticles...

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