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Shigeta-Sugimoto Lab
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The lab uses computation and visualization to unravel the flow of plasmas hotter than 10,000 degrees.
AboutAbout the lab
Seeing, observing, and diagnosing invisible high-temperature flows.
The Shigeta-Sugimoto Lab studies high-energy fluid processes that use plasmas hotter than 10,000 degrees.
Its targets include making and processing new materials, and rendering hazardous substances that are hard to decompose harmless.
For phenomena that are hot, dazzlingly bright, complex, and impossible to investigate with conventional methods, the lab develops new techniques to visualize them and analyzes the data to unravel them.
Based on the knowledge obtained, it aims to solve problems and create new thermal fluid processes.
Key terms
- Plasma
- A state in which a gas is heated further and its atoms separate into electrons and ions. Known as the fourth state of matter.
- Particle method
- A simulation technique that tracks a fluid as a collection of many particles.
- Nanoparticle
- An ultrafine particle of nanometer (one billionth of a meter) size. Expected to be applied to catalysts, electrodes, magnets, and more.
NewsLab news
A master's student received the Outstanding Presentation Award at the Student Presentation Meeting of the Tohoku Branch of the Heat Transfer Society of Japan.
A master's student received the Japan Welding Society Scholarship Award.
A paper on lava flow simulation, with a doctoral student as first author, was published in an international journal.
A doctoral student and a master's student received the Excellent Paper Award at a joint symposium with National Taipei University of Technology.
A master's student received the Best Student Award at the Plasma Symposium of the Autumn Meeting of the Society of Chemical Engineers, Japan.
ResearchResearch themes
The lab works on high-energy fluid processes that use plasmas hotter than 10,000 degrees. By developing new methods to visualize and analyze complex systems in which many physical phenomena overlap, it clarifies how they work and aims to create new thermal fluid processes.
*Illustrative imageComputational methods for high-temperature plasma flows
The lab studies simulation methods that handle, within the same calculation, flows whose temperature varies greatly from room temperature to more than 10,000 degrees. It succeeded for the first time in the world in building a method that both captures the motion of vortices and allows stable long-duration calculations.
*Illustrative imageParticle-method simulator for welding
In arc welding, solids, liquids, gases, and plasma affect one another within a small space. By incorporating physical models specific to welding into a particle method, the lab reproduces inside the computer the temperature and flow of molten metal, which cannot be measured.
*Illustrative imageNanoparticle formation in plasma
Plasma flows are expected to produce ultrafine particles of nanometer size in large quantities, but phenomena that occur at extremely high temperatures in a short time are difficult to measure directly. The lab devises systems of equations based on mathematics and physics, along with algorithms to compute them, and works to clarify these phenomena.
*Illustrative imageLava flow simulation
Lava flows cause great damage to the areas they flow into, so simulators that can predict them are needed. Applying the knowledge gained from molten metal in welding, the lab succeeded in reproducing how lava that flows while solidifying forms levee-like terrain.
MembersFaculty
The members of the Shigeta-Sugimoto Lab consist of faculty, secretaries, doctoral, master's, and undergraduate students, and research collaborators.As of 2026
- ProfessorMasaya Shigeta
- Assistant ProfessorMakoto Sugimoto
VoicesStudent voices
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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.
- Top image: “Plasma Cutter” Tim Drivas / CC BY 3.0 (cropped)
- Computational methods for high-temperature plasma flows: “X-43A (Hyper - X) Mach 7 computational fluid dynamic (CFD)” NASA / Public domain (cropped)
- Particle-method simulator for welding: “US Army soldier welding two metal pieces, Fort Gregg-Adams, Virginia, March 2025” Juan F. Jimenez, Army / Public domain (cropped)
- Nanoparticle formation in plasma: “Plasma creation” AngeloBi / CC BY 4.0 (cropped)
- Lava flow simulation: “Molten Lava Flow of Tajogaite Volcanic Eruption on La Palma in Canary Islands in 2021” Xavier Bolós / CC BY 4.0 (cropped)
- Related lab (Muneoka Lab): “Nano-plasma” Al126 at wiki / CC0 (cropped)
- Related lab (Shimizu Lab): “NASA Earth radiation thermal balance energy budget atmosphere” NASA Earth Observatory / Public domain (cropped)
- Related lab (Sato-Yamaguchi Lab): “Battery researcher” Altynay N Zhumabekova / CC BY 4.0 (cropped)
- Related lab (Maruta Lab): “ISS-65 Mark Vande Hei works on the Combustion Integrated Rack” NASA / Public domain (cropped)
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