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Nuclear Materials Engineering Lab
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The lab creates and evaluates materials that can withstand the extreme environment of fusion reactors.
AboutAbout the lab
Opening the door to a next-generation core energy source through materials.
The lab researches and develops "materials for extreme environments," which are key to realizing fusion reactors.
A fusion reactor has a complex extreme environment in which high temperature, high pressure, and radiation overlap, and this is the wall standing in the way of its realization.
The lab creates nano-oxide-particle dispersion strengthened alloys that withstand high temperature and radiation, and evaluates their properties with state-of-the-art equipment.
The lab is building a materials engineering foundation that can contribute not only to fusion reactors but also to the safety of nuclear power plants.
Key terms
- Materials for extreme environments
- Materials made for use in environments that people cannot withstand, such as those with high temperature, high pressure, radiation, or vacuum.
- Fusion reactor
- A device that fuses light atomic nuclei together and extracts the energy released in the process.
- Mechanical alloying
- A method that mixes powders of metals and other materials by mechanical force to create microstructures that cannot be made otherwise.
NewsLab news
A master's student received the Best Student Presentation Award at ICC'11
A doctoral student received the Outstanding Young Researcher Presentation Award at the 16th Fusion Energy Joint Conference
Upon completing their degrees, students received the President's Award, the Dean's Award of the Graduate School of Engineering, and the Atomic Energy Society of Japan Fellow Award
A paper whose lead author is an Assistant Professor received the 73rd Paper Award (Processing category) of the Japan Institute of Metals and Materials
A master's student received the Young Researcher Presentation Award at the 42nd Annual Meeting of the Japan Society of Plasma Science and Nuclear Fusion Research
ResearchResearch themes
Fusion reactors are expected to serve as a core energy source supporting human civilization over the long term. The lab studies materials that withstand their extreme environment, where high temperature, high pressure, and radiation overlap, from two sides: making them and evaluating them.
*Illustrative imageMaking materials for extreme environments
The lab develops "nano-oxide-particle dispersion strengthened alloys" that resist high temperature and radiation. Using mechanical alloying, in which powders of metals and other materials are mixed mechanically, it has succeeded in controlling the microstructure so that nano-sized oxide particles are dispersed at high density.
*Illustrative imageEvaluating materials for extreme environments
The lab evaluates the strength and thermal conductivity of the materials it makes, using state-of-the-art equipment. It also advances its investigations through ultra-small-scale testing with nanoindentation equipment and through electron microscopes that can analyze electronic states and microstructure at the same time.
MembersFaculty
The lab's members consist of faculty, academic research fellows, doctoral, master's, and undergraduate students, non-degree undergraduate research students, and administrative assistants.As of 2026
- ProfessorRyuta Kasada
- Associate ProfessorSosuke Kondo
- Associate ProfessorKiyohiro Yabuuchi
- Assistant ProfessorDiancheng Geng
- Assistant ProfessorPARK Minha
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. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “U.S. Department of Energy - Science - )” U.S. Department of Energy from United States / Public domain (cropped)
- Making materials for extreme environments: “Iron powder” Anonimski / CC0 (cropped)
- Evaluating materials for extreme environments: “Transmission electron microscope (2)” Gannu03 / CC BY-SA 4.0 (cropped)
- Related lab (Sato-Yamaguchi Lab): “Battery researcher” Altynay N Zhumabekova / CC BY 4.0 (cropped)
- Related lab (Ito-Ebara-Shishido Lab): “U.S. Department of Energy - Science - )” U.S. Department of Energy from United States / Public domain (cropped)
- Related lab (Matsuyama-Kada Lab): “M-42 radiation detector” DLR / CC BY 3.0 de (cropped)
- Related lab (Iga Lab): “M-1 rocket turbopump” Selevercin at English Wikipedia / CC BY 3.0 (cropped)
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