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@ARTICLE{Pourshahidi:911931,
      author       = {Pourshahidi, Ali Mohammad and Achtsnicht, Stefan and
                      Offenhäusser, Andreas and Krause, Hans-Joachim},
      title        = {{F}requency {M}ixing {M}agnetic {D}etection {S}etup
                      {E}mploying {P}ermanent {R}ing {M}agnets as a {S}tatic
                      {O}ffset {F}ield {S}ource},
      journal      = {Sensors},
      volume       = {22},
      number       = {22},
      issn         = {1424-8220},
      address      = {Basel},
      publisher    = {MDPI},
      reportid     = {FZJ-2022-05178},
      pages        = {8776 -},
      year         = {2022},
      abstract     = {Frequency mixing magnetic detection (FMMD) has been
                      explored for its applications in fields of magnetic
                      biosensing, multiplex detection of magnetic nanoparticles
                      (MNP) and the determination of core size distribution of MNP
                      samples. Such applications rely on the application of a
                      static offset magnetic field, which is generated
                      traditionally with an electromagnet. Such a setup requires a
                      current source, as well as passive or active cooling
                      strategies, which directly sets a limitation based on the
                      portability aspect that is desired for point of care (POC)
                      monitoring applications. In this work, a measurement head is
                      introduced that involves the utilization of two ring-shaped
                      permanent magnets to generate a static offset magnetic
                      field. A steel cylinder in the ring bores homogenizes the
                      field. By variation of the distance between the ring magnets
                      and of the thickness of the steel cylinder, the magnitude of
                      the magnetic field at the sample position can be adjusted.
                      Furthermore, the measurement setup is compared to the
                      electromagnet offset module based on measured signals and
                      temperature behavior.},
      cin          = {IBI-3},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IBI-3-20200312},
      pnm          = {5241 - Molecular Information Processing in Cellular Systems
                      (POF4-524)},
      pid          = {G:(DE-HGF)POF4-5241},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {36433383},
      UT           = {WOS:000887644400001},
      doi          = {10.3390/s22228776},
      url          = {https://juser.fz-juelich.de/record/911931},
}