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Fukuyama-Ohtsuka-Uchikoshi-Adachi Lab
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The lab develops advanced materials and the processes to make them, working in the field of ultra-high temperatures.
AboutAbout the lab
Developing advanced materials in the world of ultra-high temperatures
The Fukuyama-Ohtsuka-Uchikoshi-Adachi Lab develops advanced materials and their processes for the fields of energy, the environment, and aerospace.
Its field is ultra-high temperatures: above 1,000°C is routine, and sometimes temperatures exceed 2,000°C.
The lab works on single-crystal growth of semiconductors, next-generation ultra-heat-resistant alloys, and advanced nonferrous smelting processes.
Members acquire a sense for the physical chemistry of materials and pioneer the frontier of materials processing and high-temperature melt science.
Key terms
- Single crystal
- A crystal in which the arrangement of atoms is uniform throughout. Used for semiconductor substrates and other applications
- Thermophysical properties
- Heat-related properties of a substance, such as density, surface tension, viscosity, and thermal conductivity
- Electromagnetic levitation
- A method that melts a sample while keeping it suspended by a high-frequency magnetic field, so its properties can be measured without touching a container
NewsLab news
Presented the growth of aluminum nitride single crystals using home-made needle-shaped crystals as seeds
A master's student won the Outstanding Poster Award at the Tohoku Branch Research Meeting of the Japan Institute of Metals
A student won the Hatano Scholarship Fund Award for Encouragement of Research in Multidisciplinary Materials Science
A master's student won the Outstanding Poster Award at the Japan Institute of Metals
ResearchResearch themes
Working in the field of ultra-high temperatures, above 1,000°C and sometimes above 2,000°C, the lab studies single-crystal growth of semiconductors, next-generation ultra-heat-resistant alloys, and advanced nonferrous smelting processes. It aims to develop advanced materials and processes that go beyond current technology and to contribute to the fields of energy, the environment, and aerospace.
*Illustrative imageGrowth of Aluminum Nitride Single Crystals
Aluminum nitride conducts heat well and transmits deep ultraviolet light well, so it is a promising substrate material for deep-ultraviolet light-emitting devices. The lab is developing a growth method that uses a Ni-Al flux, with in situ observation by the electromagnetic levitation apparatus PROSPECT (joint research with a university in the United States).
*Illustrative imageThermophysical Property Measurement of Molten Copper Matte
In copper pyrometallurgy, "copper loss" has long been a challenge: small droplets of matte remain in the slag and lower the yield. The settling of droplets and their attachment to gas bubbles are governed by the density, viscosity, and surface tension of the melts, so the lab uses levitation techniques to measure the thermophysical properties of matte and slag without any contact with a container.
*Illustrative imagePhase Diagrams and Solidification of Ultra-High-Temperature Materials
Ni-based superalloys used for high-pressure turbine blades in jet engines require cooling structures, which lowers energy conversion efficiency and is seen as a problem. For Mo-Si-B-based alloys, which have excellent high-temperature strength, the lab measures phase transformation temperatures with an ultra-high-temperature thermal analysis apparatus that uses blackbody radiation, and studies their phase diagrams and solidification processes.
*Illustrative imageMelt Properties for 3D Additive Manufacturing
3D additive manufacturing can produce products with complex shapes without molds, but numerical simulation for controlling microstructure requires accurate thermophysical property values of the melt. For Ti-6Al-4V alloy and Co-Cr-Mo-based alloys, the lab measures density, surface tension, and other properties with high accuracy by electromagnetic levitation with a static magnetic field applied.
MembersFaculty
Members of the Fukuyama-Ohtsuka-Uchikoshi-Adachi Lab consist of faculty, JSPS postdoctoral fellows, researchers, assistants, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorHiroyuki Fukuyama
- Associate ProfessorMakoto Ohtsuka
- Associate ProfessorMasahito Uchikoshi
- Associate ProfessorMasayoshi Adachi
- Assistant ProfessorLi Sen
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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: “High Vacuum Creep Facility in the Materials Processing Laboratory (GRC-1973-C-00411)” NASA Glenn Research Center / Public domain (cropped)
- Growth of Aluminum Nitride Single Crystals: “Progress of sapphire single crystal growth - DPLA - d199bf6a077c3bb4dbc2d06d6ae3ba76” Watertown Arsenal (Mass.); U.S. Army Materials and Mechanics Research Center. Public Affairs Office / Public domain (cropped)
- Thermophysical Property Measurement of Molten Copper Matte: “Chillagoe Smelters v2” Brims, Harriett ( ) / Public domain (cropped)
- Phase Diagrams and Solidification of Ultra-High-Temperature Materials: “Turbine blade with wax pattern” Olivier Cleynen / CC BY-SA 3.0 (cropped)
- Melt Properties for 3D Additive Manufacturing: “FZU 3Dprinting 2” René Volfík / CC BY-SA 4.0 (cropped)
- Related lab (Shibata-Adachi Lab): “Copper smelting works - Cobar, NSW, c.1892 (Photo, George Grill, Collection of Mitchell Library, State Library of NSW)” George Grill / Public domain (cropped)
- Related lab (Sato (Y.) Lab): “Carbon Nanotube Measurements ( )” National Institute of Standards and Technology / Public domain (cropped)
- Related lab (Kamitakahara-Umetsu Lab): “183486main MSRR-12” NASA / Public domain (cropped)
- Related lab (Suzuki (Ken) Lab): “Ideenwelt EM2862 - Weight sensor - Strain gauge-91926” Raimond Spekking / CC BY-SA 4.0 (cropped)
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