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Related Experiment Videos

Three-dimensional tomography using a soft X-ray holographic microscope and CCD camera.

N Watanabe1, S Aoki

  • 1Institute of Applied Physics, University of Tsukuba, Tennoudai, Tsukuba, Ibaraki 305, Japan.

Journal of Synchrotron Radiation
|July 21, 2004
PubMed
Summary

Researchers improved soft X-ray holography

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Area of Science:

  • Physics
  • Microscopy
  • Imaging Science

Background:

  • Soft X-ray holography offers high transverse resolution but poor depth resolution due to limited numerical aperture.
  • Obtaining 3D information from 2D holographic data is challenging.

Purpose of the Study:

  • To develop a method for achieving 3D imaging using soft X-ray holography.
  • To overcome the depth resolution limitations of single soft X-ray holograms.

Main Methods:

  • Recorded in-line soft X-ray holograms from multiple angles.
  • Reconstructed 2D projection data from each hologram.
  • Performed 3D reconstruction using back-projection of the reconstructed holograms.

Main Results:

  • Successfully obtained 3D images of a 10 micrometer tungsten wire.
  • Successfully obtained 3D images of a diatom fossil.
  • Demonstrated the feasibility of the multi-angle holographic approach for 3D reconstruction.

Conclusions:

  • The developed method enables 3D imaging with soft X-ray holography.
  • This technique overcomes the inherent depth resolution limitations.
  • Applicable to imaging micro-scale objects in 3D.

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