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RIKEN SPring-8 Center Imaging System Development Team

Team Leader: Yukio Takahashi (D.Eng.)

Research Summary

Yukio  Takahashi(D.Eng.)

The imaging system development team is developing novel imaging systems using high-brilliant X-rays. The imaging systems are applied to a variety of practical materials, and will serve as a basis for visualizing material structures on a wide spatio-temporal scale.

Main Research Fields

  • Interdisciplinary Science & Engineering

Related Research Fields

  • Engineering
  • Chemistry
  • Informatics
  • Quantum beam science
  • Material engineering
  • Nano/Micro science


  • X-ray Imaging
  • Coherent Diffraction Imaging
  • Ptychography
  • Materials Science

Selected Publications

  • 1. Uematsu, H., Ishiguro, N., Abe, M., Takazawa, S., Kang, J., Hosono, E., Nguyen, N. D., Dam, H. C., Okubo, M, and Takahashi, Y.:
    "Visualization of Structural Heterogeneities in Particles of Lithium Nickel Manganese Oxide Cathode Materials by Ptychographic X-ray Absorption Fine Structure"
    The Journal of Physical Chemistry Letters 12, 5781–5788 (2021).
  • 2. Takazawa, S., Kang, J., Abe, M., Uematsu, H., Ishiguro, N., and Takahashi, Y.:
    "Demonstration of single-frame coherent X-ray diffraction imaging using triangular aperture: Towards dynamic nanoimaging of extended objects"
    Optics Express 29, 14394-14402 (2021).
  • 3. Ishiguro, N., Higashino, T., Hirose, M., and Takahashi, Y.:
    "Nanoscale Visualization of Phase Transition in Melting of Sn-Bi Particles by In situ Hard X-ray Ptychographic Coherent Diffraction Imaging"
    Microscopy and Microanalysis 26, 878-885 (2020).
  • 4. Hirose, M., Shimomura, K., Higashino, T., Ishiguro, N., and Takahashi, Y.:
    "Nanoscale determination of interatomic distance by ptychography-EXAFS method using advanced Kirkpatrick-Baez mirror focusing optics"
    Journal of Synchrotron Radiation 27, 455-461 (2020).
  • 5. Hirose, M., Higashino, T., Ishiguro, N., and Takahashi, Y.:
    "Multibeam ptychography with synchrotron hard X-rays"
    Optics Express 28, 1216-1224 (2020).
  • 6. Hirose, M., Ishiguro, N., Shimomura, K., Nguyen, D.-N., Matsui, H., Dam, H. C., Tada, M., and Takahashi, Y.:
    "Oxygen-diffusion-driven oxidation behavior and tracking areas visualized by X-ray spectro-ptychography with unsupervised learning"
    Communications Chemistry 2, 50 (2019).
  • 7. Shimomura, K., Hirose, M., Higashino, T., and Takahashi, Y.:
    "Three-dimensional iterative multislice reconstruction for ptychographic X-ray computed tomography"
    Optics Express 26, 31199-31208 (2018).
  • 8. Hirose, M., Ishiguro, N., Shimomura, K., Burdet, N., Matsui, H., Tada, M., and Takahashi, Y.:
    "Visualization of Heterogeneous Oxygen Storage Behavior in Platinum-Supported Cerium-Zirconium Oxide Three-Way Catalyst particles by Hard X-ray Spectro-Ptychography"
    Angewandte Chemie International Edition 130, 1490-1495 (2018).
  • 9. Shimomura, K., Hirose, M., and Takahashi, Y.:
    "Multislice imaging of integrated circuits by precession X-ray ptychography"
    Acta Crystallographica Section A 74, 66-70 (2018).
  • 10. Hirose, M., Shimomura, K., Burdet, N., and Takahashi, Y.:
    "Use of Kramers-Kronig relation in phase retrieval calculation in X-ray spectro-ptychography"
    Optics Express 25, 8593-8603 (2017).

Related Links

Lab Members

Principal investigator

Yukio Takahashi
Team Leader

Contact Information

1-1-1 Kouto, Sayo-cho
Sayo-gun, Hyogo
679-5148 Japan
Email: yukio [at] spring8.or.jp