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Nuclear Fuel and Materials Engineering Lab
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Controlling radioactive materials and putting radiation to work in medicine.
AboutAbout the lab
Taking on challenges with the science of radioactive materials and radiation.
The Nuclear Fuel and Materials Engineering Lab works on problems spanning energy, the environment, and medicine, drawing on the chemistry and physics of radioactive materials and the measurement and use of radiation.
Its subjects range from high-level radioactive waste and the fuel debris at the Fukushima Daiichi Nuclear Power Plant to future nuclear fuels and diagnostic and therapeutic technologies in nuclear medicine and life science.
The lab views radioactive materials and radiation both as things that must be controlled and as tools to be put to use, and aims for a sustainable and prosperous society.
Key terms
- fuel debris
- Molten nuclear fuel from a nuclear power plant accident that has mixed with surrounding structural materials and solidified
- geological disposal
- A method of confining radioactive waste by burying it in a stable geological formation deep underground
- molecular probe
- A molecule that binds to a specific molecule in the body and serves as a marker showing its location, for example in images
NewsLab news
A paper by Prof. Sasaki and colleagues was published in Applied Geochemistry
A master's student received the Atomic Energy Society of Japan Fellow Award (2026)
A paper by Prof. Fuchigami and colleagues was published in Molecules
A paper by Associate Professor Kobayashi and colleagues was published in Journal of Nuclear Materials
A paper by Assistant Professor Omokawa and colleagues was published in Bioorganic & Medicinal Chemistry
ResearchResearch themes
Building on radiochemistry and physical chemistry, which seek to understand and control the chemical states, reactions, migration, separation, and measurement of radionuclides, the lab studies topics ranging from the back end of the nuclear fuel cycle and advanced nuclear fuels to nuclear medicine and life science.
*Illustrative imageRadioactive waste disposal and the decommissioning of Fukushima
For the geological disposal of high-level radioactive waste, and for the treatment and disposal of the fuel debris and accident waste from the Fukushima Daiichi Nuclear Power Plant, the lab investigates how actinide elements and other species dissolve and migrate in groundwater.
*Illustrative imageNew nuclear fuels made from nanoparticles
The lab studies nanoparticle fuels as a route to high-performance fuel. Using thermodynamics, it clarifies how particle size affects phase stability in materials such as uranium oxide, and it verifies design principles together with X-ray and neutron analysis.
*Illustrative imageSeeing life processes with radiation
Using radiation imaging and spectroscopy, the lab makes the movement of molecules and the state of cells inside the body visible. It has developed molecular probes that target amyloid-β and molecules specific to cancer, and has applied them to the analysis of the brain and inflammation.
*Illustrative imageFrom diagnosis to treatment with a single principle
Combining Raman spectroscopy, photoacoustics, radioactive probes, and therapeutic radionuclides, the lab aims to develop technology that handles both diagnosis and treatment of difficult-to-treat cancers in one integrated approach. It also studies the properties of alpha particles and Auger electrons and the body's response to them.
MembersFaculty
The faculty members of the Nuclear Fuel and Materials Engineering Lab are a Professor, an Associate Professor, and an Assistant Professor.
- ProfessorTakayuki Sasaki
- ProfessorTakeshi Fuchigami
- Associate ProfessorTaishi Kobayashi
- Assistant ProfessorMarina Omokawa
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: “NTS - Low-level radioactive waste storage pit” Federal Government of the United States / Public domain (cropped)
- Radioactive waste disposal and the decommissioning of Fukushima: “Visit to TEPCO’s Fukushima Daiichi Nuclear Power Plant (01814546)” IAEA Imagebank / CC BY 2.0 (cropped)
- New nuclear fuels made from nanoparticles: “Fuel Pellet” NRC / Public domain (cropped)
- Seeing life processes with radiation: “Megavolt x-ray tube - St Bartholomew's Hospital 1937” 作者不詳 / Public domain (cropped)
- From diagnosis to treatment with a single principle: “A nuclear medicine machine is used for medical imaging in a hospital in North Carolina 04” Harrison Keely / CC BY 4.0 (cropped)
- Related lab (Particle Beam Medical Physics Lab): “Cyclotron patent” Ernest O. Lawrence / Public domain (cropped)
- Related lab (Particle Beam Materials Engineering Lab): “Later stage of the CLARA Accelerator, Daresbury Laboratory” Mystery Ray / CC0 (cropped)
- Related lab (Neutron Source Engineering Lab): “Núcleo del reactor nuclear RA-3, «Ciencia ficción», by Luis Gauna Pereira” Gaunper / CC BY-SA 4.0 (cropped)
- Related lab (Quantum Beam Science Lab): “Ion Beam - GPN” NASA/GRC / Public domain (cropped)
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