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Takahashi Lab
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The lab uses synchrotron X-rays to visualize nanoscale structures inside materials and how those structures change.
AboutAbout the lab
Visualizing uncharted space and time with synchrotron radiation to transform materials science.
Takahashi Lab studies measurement and imaging techniques that use synchrotron X-rays to see inside materials.
Practical materials and devices have heterogeneous structures that span scales from atoms to millimeters.
The lab captures these structures, along with the changes that drive performance and degradation, at nanoscale resolution and over time.
Using NanoTerasu in Aobayama and the large synchrotron radiation facility SPring-8, the lab develops its own new measurement and analysis methods.
Key terms
- Synchrotron radiation
- Intense light, such as X-rays, emitted when electrons traveling at nearly the speed of light have their direction bent by magnets
- Ptychography
- A microscopy method in which a narrow X-ray beam is applied while shifting its position step by step, and an image is computed from the resulting diffraction patterns
- Coherent X-rays
- X-rays whose wave crests and troughs are aligned. Using interference, an image can be reconstructed without a lens
NewsLab news
A paper on phase-modulated multibeam X-ray ptychography was published in Optics Express
A paper on the analysis of high-aspect-ratio etched holes was published in Applied Physics Letters
A doctoral student received the Excellent Oral Presentation Award at the 82nd Annual Meeting of the Japanese Society of Microscopy
A paper on the 3D visualization of sulfur was published in Scientific Reports
A faculty member and a doctoral student received the 47th Japan Society of Applied Physics Outstanding Paper Award
ResearchResearch themes
The lab develops imaging and spectroscopy techniques that use synchrotron radiation, and advances data analysis methods. By extending from the nano to the micro scale and along the time axis, it aims to observe and analyze scales that could not be observed before.
*Illustrative imageHigh-resolution ptychography instrument
At NanoTerasu, the lab is developing a high-resolution ptychography measurement system that covers a wide energy range from tender X-rays to hard X-rays. By combining high-performance focusing optics with a fast two-dimensional detector, it aims to observe a wide range of materials at the nanoscale.
*Illustrative imageSeeing the chemical state of batteries and catalysts
The lab develops methods that perform microscopic imaging while changing the energy near an X-ray absorption edge, visualizing not only the distribution of elements but also their chemical states at the nano and micro scales. It uses these methods to reveal the changes that accompany reactions and degradation in battery materials, catalysts, and oxygen storage materials.
*Illustrative imageDiffraction imaging of dynamic phenomena
Using coherent X-ray diffraction imaging with a triangular aperture, the lab develops a dynamic imaging method that reconstructs an image from a single diffraction pattern without scanning. It is applying the method to dynamic processes such as nucleation and growth, deformation, and fracture in metallic materials.
*Illustrative imageThree-dimensional observation of semiconductor devices
The lab develops a multislice method that accounts for how X-rays propagate inside a sample, as well as measurement systems for ptychographic CT. It applies them to distinguishing materials inside CMOS image sensors in three dimensions and to non-destructive observation of the narrow, deep holes used in flash memory.
MembersFaculty
Takahashi Lab members consist of faculty, doctoral and master's students, technical assistants, and administrative assistants.As of 2026
- ProfessorYukio Takahashi
- Associate ProfessorKozo Shinoda
- Associate ProfessorNozomu Ishiguro
- Assistant ProfessorMasaki Abe
- Assistant ProfessorShuntaro Takazawa
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “SPring- img pano” en:User:Artorius / CC BY-SA 3.0 (cropped)
- High-resolution ptychography instrument: “Aust.-Synchrotron-Soft-X-ray-Beamline-Experimental-Station” jjron / CC BY-SA 3.0 (cropped)
- Seeing the chemical state of batteries and catalysts: “Sulfur (GeoDIL number - 533)” Nessa Eull / CC0 (cropped)
- Diffraction imaging of dynamic phenomena: “CSIRO ScienceImage 937 Coiled magnesium sheets and magnesium ingots” Mark Fergus, CSIRO / CC BY 3.0 (cropped)
- Three-dimensional observation of semiconductor devices: “5C2A5953R - – Silicon Wafer 20200519” Rob Bulmahn / CC BY 2.0 (cropped)
- Related lab (Momose Lab): “Optical Talbot Carpet” Ben Goodman. Original uploader was Chwirkytheappleboy at en.wikipedia / CC BY-SA 3.0 (cropped)
- Related lab (Tezuka-Matsuura Lab): “Bar-magnets-repelling-iron-filings-max” MikeRun, Vera Wurmsdobler / CC BY-SA 4.0 (cropped)
- Related lab (Saito Lab): “Molybdenite-251617” Robert M. Lavinsky / CC BY-SA 3.0 (cropped)
- Related lab (Saida Lab): “U.S. Department of Energy - Science - )” U.S. Department of Energy from United States / Public domain (cropped)
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