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A magnetic source imaging camera
- Source :
- Applied Physics Letters. 109:023505
- Publication Year :
- 2016
- Publisher :
- AIP Publishing, 2016.
-
Abstract
- We describe a magnetic source imaging camera (MSIC) allowing a direct dynamic visualization of the two-dimensional spatial distribution of the individual components Bx(x,y), By(x,y) and Bz(x,y) of a magnetic field. The field patterns allow—in principle— a reconstruction of the distribution of sources that produce the field B→ by inverse problem analysis. We compare experimentally recorded point-spread functions, i.e., field patterns produced by point-like magnetic dipoles of different orientations with anticipated field patterns. Currently, the MSIC can resolve fields of ≈10 pT (1 s measurement time) range in a field of view up to ∼20 × 20 mm2. The device has a large range of possible applications. As an example, we demonstrate the MSIC's use for recording the spatially resolved Néel magnetorelaxation of blocked magnetic nanoparticles.
- Subjects :
- Physics
Physics and Astronomy (miscellaneous)
Field (physics)
business.industry
Field of view
02 engineering and technology
Inverse problem
021001 nanoscience & nanotechnology
01 natural sciences
Magnetic field
Distribution (mathematics)
Optics
0103 physical sciences
Range (statistics)
Magnetic nanoparticles
010306 general physics
0210 nano-technology
business
Magnetic dipole
Subjects
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 109
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi.dedup.....6defc8c8b97a525fba138b9cbddaf928