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Applied Physics Letters / Volume 97 / Issue 9 / MAGNETISM AND SUPERCONDUCTIVITY

Appl. Phys. Lett. 97, 092505 (2010); http://dx.doi.org/10.1063/1.3486118 (3 pages)

Generation of a static magnetic field-free line using two Maxwell coil pairs

Tobias Knopp, Marlitt Erbe, Timo F. Sattel, Sven Biederer, and Thorsten M. Buzug

Institute of Medical Engineering, University of Lübeck, Lübeck 23562, Germany

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(Received 9 June 2010; accepted 28 July 2010; published online 1 September 2010)

In this paper, the generation of a magnetic field-free line (FFL) along a constant direction is investigated. It is shown that an FFL gradient field can be generated by two perpendicular Maxwell coil pairs. These coils can be used for imaging distributions of superparamagnetic nanoparticles with high sensitivity applying the magnetic particle imaging technique. To this end, the FFL has to be rapidly moved back and forth while either the object or the coil assembly rotates slowly. The field quality of the proposed coil setup is assessed by manufacturing a prototype and measuring the magnetic field using a Hall-effect sensor.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

flow birefringence, Hall effect, magnetic fields, magnetic particles, nanoparticles, superparamagnetism

PACS

  • 78.20.Fm

    Birefringence

  • 75.20.-g

    Diamagnetism, paramagnetism, and superparamagnetism

  • 73.22.-f

    Electronic structure of nanoscale materials and related systems

  • 75.75.-c

    Magnetic properties of nanostructures

  • 72.15.Gd

    Galvanomagnetic and other magnetotransport effects

  • 75.50.Tt

    Fine-particle systems; nanocrystalline materials

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3486118

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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