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(Kyosei 9) Ceramics Chemistry Lab
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The lab makes inorganic nanoparticles and thin films using methods with a small environmental burden.
AboutAbout the lab
Making inorganic materials in environmentally friendly ways.
The Ceramics Chemistry Lab synthesizes high-value-added inorganic materials using methods with a small environmental burden.
Drawing on its own chemical methods, the lab pursues the precise fabrication of high-quality inorganic materials, centered on fine particles.
It makes inorganic nanoparticles, thin films, porous materials, and composite materials from solution and evaluates their properties.
It also takes on the challenge of realizing manufacturing that is gentle on the global environment, that is, a lower environmental burden.
Key terms
- Ceramics
- Inorganic materials formed by metals combined with oxygen and other elements. Many are made by firing and hardening
- Nanoparticle
- A very small particle with a size of about 1 to 100 nanometers (one nanometer is one billionth of a meter)
- Structural color
- Color produced not by pigments but by fine structures causing light to interfere
- Sol-gel method
- A method of making solid materials by carrying out a reaction in solution. It is often used to make thin films
NewsLab news
A master's student received the Excellent Presentation Award and the JAICI Award from the Japan Association for International Chemical Information at the 151st Scientific Meeting of the Society of Inorganic Materials, Japan
A master's student received the Presentation Encouragement Award (Excellence) and the JAICI Award from the Japan Association for International Chemical Information at the 149th Scientific Meeting of the Society of Inorganic Materials, Japan
A master's student received a Presentation Encouragement Award at the 37th Fall Symposium of the Ceramic Society of Japan
ResearchResearch themes
The lab aims to synthesize high-value-added nanoparticle materials using methods with a small environmental burden. It makes inorganic nanoparticles, thin films, porous materials, and composite materials from solution and evaluates them.
*Illustrative imageStructural color materials that respond to the environment
When particles are arranged in an orderly way, color arises from light interference. By modifying the surface of plate-like layered titanate particles with sugar derivatives and forming a composite structure with water or glycerol through hydrogen bonding, the lab developed a structural color material whose stacking spacing can be changed freely. A composite film of cerium oxide and sorbitol changes color depending on humidity.
*Illustrative imageA sol-gel method that does not use alkoxides
Alkoxides, the raw materials of the sol-gel method, are made by reacting metal chlorides with alcohols. In this research, the lab developed a method for preparing sols and gels directly from metal chlorides under mild conditions, below 100 °C and at ambient pressure, and applies it to the fabrication of functional thin films.
*Illustrative imageFunctional thin films that make use of particle shape
The lab makes functional thin films by exploiting the properties of particles whose shape and size are controlled. It is working on a method of producing aluminum-doped zinc oxide thin films from solution with aligned orientation, and on structural color materials made of spherical secondary particles of zinc oxide.
*Illustrative imageChanging inorganic nanoparticles with light
When zinc oxide or cerium oxide particles are irradiated with light, the particles may dissolve and then precipitate again. The lab investigates methods of controlling this process of photodissolution and reprecipitation to change the size, shape, and properties of particles with light.
MembersFaculty
The members of the Ceramics Chemistry Lab consist of faculty, master's students, and fourth-year undergraduates.As of 2026
- ProfessorNaofumi Uekawa
- ProfessorTakashi Kojima
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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: “Transmission electron microscope Kemira” kallerna / Public domain (cropped)
- Structural color materials that respond to the environment: “Multicrystalline silicon wafer with thin film iridescence” Radiotrefoil / CC BY-SA 4.0 (cropped)
- A sol-gel method that does not use alkoxides: “White Silica Gel” Desiccants / CC BY-SA 3.0 (cropped)
- Functional thin films that make use of particle shape: “Optical coating - Thin film coating - Stripe filters - CILAS” CILAS / CC BY-SA 3.0 (cropped)
- Changing inorganic nanoparticles with light: “Uv lamp” Coleopter / CC BY-SA 4.0 (cropped)
- Related lab (Matsubayashi Lab): “Ceramographic sections” His Manliness (talk) 04:59, 2 December 2008 (UTC) / Public domain (cropped)
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