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Kamitakahara-Umetsu Lab
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A materials science lab that designs materials in harmony with life and the environment.
AboutAbout the lab
Creating materials that bring harmony with the environment and life.
Kamitakahara-Umetsu Lab studies the design of materials that are in harmony with life and the environment.
Combining environmental science, materials science, and life science, the lab investigates from the fundamentals how materials interact with biological and natural phenomena.
Its main subjects are ceramic artificial bones that repair bone defects, carriers that immobilize microorganisms, and environmental remediation materials made from waste.
Through materials design, the lab aims for materials that are not only in harmony with the environment but also actively act on life and nature.
Key terms
- Calcium phosphate
- The inorganic component of bone. It is highly biocompatible and is used in artificial bone and water purification materials.
- Carrier (support)
- A material that immobilizes microorganisms at high density on its surface or inside so that they can function. It is used for environmental remediation and substance production.
- Hydroxyapatite
- A representative calcium phosphate. It has strong abilities to adsorb organic matter and exchange ions.
NewsLab news
A paper co-authored by Professor Kamitakahara was published in Journal of the Japan Society of Powder and Powder Metallurgy
A paper by Professor Kamitakahara, Assistant Professor Umetsu, and others was published in Phosphorus Research Bulletin
A paper by Professor Kamitakahara, Assistant Professor Umetsu, and others was published in Surfaces and Interfaces
A doctoral student received an Excellence Award and the Dean's Award of the Graduate School of Environmental Studies (DOWA Award) at the Environmental Science Symposium
A doctoral student won 2nd place at the Three Minute Thesis competition
ResearchResearch themes
The use of materials can bring problems such as harmful effects on the human body and environmental pollution. The lab therefore combines environmental science, materials science, and life science to create environmentally harmonious materials that bring harmony to life and the environment.
*Illustrative imageCeramic artificial bone that heals bone
The lab makes artificial bone with high bone regeneration ability by controlling the crystal phase, composition, and porous structure of calcium phosphate, the inorganic component of bone. It also works on creating cements that have both macropores, which cells and tissue can enter, and micropores, which increase solubility.
*Illustrative imageCarriers where microorganisms settle
In bioreactors used for environmental remediation and substance synthesis, performance improves when microorganisms are immobilized on carriers at high density. Based on the idea that biocompatible materials are also easily accepted by microorganisms, the lab studies the adhesion of microorganisms to material surfaces such as titanium oxide.
*Illustrative imageRemediation materials made from waste
By heating discarded livestock bones, the lab produced bone char, a composite of activated carbon and hydroxyapatite, and used it as a material to remove fluoride ions. A method of forming hydroxyapatite on the surface of oyster shells has also achieved high removal capacity.
MembersFaculty
The members of Kamitakahara-Umetsu Lab consist of faculty members, researchers, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorMasanobu Kamitakahara
- Assistant ProfessorMasaki Umetsu
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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: “183486main MSRR-12” NASA / Public domain (cropped)
- Ceramic artificial bone that heals bone: “Demineralized Bone Matrix” BruceBlaus / CC BY-SA 4.0 (cropped)
- Carriers where microorganisms settle: “Polymicrobic biofilm epifluorescence” Ricardo Murga and Rodney Donlan / Public domain (cropped)
- Remediation materials made from waste: “Chemical pumps at water purification plant” Z22 / CC BY-SA 3.0 (cropped)
- Related lab (Omata-Suzuki-Yamasaki Lab): “Thin Film Flexible Solar PV Ken Fields 1” Fieldsken Ken Fields / CC BY-SA 3.0 (cropped)
- Related lab (Kano-Kushimoto Lab): “Rhodium powder pressed melted” Alchemist-hp (talk) www.pse-mendelejew.de derivative work: Purpy Pupple (talk) / CC BY-SA 3.0 de (cropped)
- Related lab (Haga-Tsuruoka Lab): “How ST designs and manufactures semiconductor devices - screenshot 1” STMicroelectronics (original work) Una tantum (screenshot) / CC BY 3.0 (cropped)
- Related lab (Funamoto Lab): “Microfluidic Reservoir” Kimbalm / CC BY-SA 4.0 (cropped)
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