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Related Concept Videos

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
X-ray Imaging01:24

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Heteronuclear correlation spectroscopy is an analytical technique that investigates the coupling between different types of nuclei, often a proton and an X-nucleus, such as carbon-13 or nitrogen-15. This method is commonly used in nuclear magnetic resonance (NMR) spectroscopy to gain insights into complex chemical compounds' structural and compositional aspects. A typical heteronuclear correlation spectrum displays X-nucleus chemical shifts on one axis and a proton spectrum on the other axis.
Atomic Nuclei: Magnetic Resonance01:05

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Related Experiment Video

Updated: May 29, 2026

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
10:28

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

Published on: July 5, 2016

Magnetic imaging by x-ray holography using extended references.

Thomas A Duckworth1, Feodor Ogrin, Sarnjeet S Dhesi

  • 1School of Physics and Engineering, University of Exeter, Stocker Road, Exeter EX4 4QL, UK. tad203@ex.ac.uk

Optics Express
|September 22, 2011
PubMed
Summary

We developed advanced magnetic lensless imaging using extended references for clearer magnetic domain visualization. This technique offers faster imaging and easier fabrication compared to traditional methods.

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Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects
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Last Updated: May 29, 2026

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
10:28

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization

Published on: July 5, 2016

Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects
10:16

Digital Inline Holographic Microscopy (DIHM) of Weakly-scattering Subjects

Published on: February 8, 2014

Area of Science:

  • Physics
  • Materials Science
  • Nanotechnology

Background:

  • Fourier transform holography (FTH) is a powerful imaging technique.
  • Standard FTH often uses small holes for reference beams, which can limit intensity and increase acquisition times.
  • Imaging magnetic materials at high resolution is crucial for understanding their properties.

Purpose of the Study:

  • To demonstrate magnetic lensless imaging using extended references in Fourier transform holography.
  • To improve upon standard FTH by increasing reference beam intensity and simplifying fabrication.
  • To visualize magnetic domains in Co/Pt multilayer thin films.

Main Methods:

  • Utilized Fourier transform holography with an extended reference beam provided by a narrow slit.
  • Employed X-ray magnetic circular dichroism (XMCD) for magnetic contrast.
  • Imaged magnetic domains in a Cobalt/Platinum (Co/Pt) multilayer thin film with perpendicular magnetic anisotropy.

Main Results:

  • Successfully demonstrated magnetic lensless imaging of magnetic domains.
  • Achieved a spatial resolution of approximately 30 nm.
  • Showcased advantages of extended references: increased intensity leading to reduced counting time and simpler fabrication compared to pinholes.

Conclusions:

  • Extended references in FTH offer significant advantages for magnetic imaging.
  • The developed technique provides a faster and more accessible method for visualizing magnetic nanostructures.
  • The spatial resolution is currently limited by the experimental setup's sample period.