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Materials Design Chemistry Lab
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A lab that makes nanosized metal and semiconductor particles and controls the flow of light and electrons.

AboutAbout the lab
Smaller particles, different properties.
The Torimoto Lab makes metal and semiconductor particles on the nanometer scale and researches how to create materials with new functions.
When particles become roughly 10 nm or smaller, the quantum size effect gives them properties unlike those of either large crystals or molecules.
Using chemical methods, the lab finely tunes the shape and structure of the particles, aiming for materials that can freely control the flow of light, electrons, and molecules.
These materials are expected to be used in photocatalysts and in electronic devices that use light.
Key terms
- Nanometer
- A unit of length equal to one billionth of a meter. About the length of a few atoms lined up.
- Quantum size effect
- A phenomenon in which, when a particle becomes very small, the range in which electrons can move narrows, so properties such as light absorption and emission color change with size.
- Photocatalyst
- A material that, when exposed to light, drives chemical reactions in surrounding substances while remaining unchanged itself.
NewsLab news
A paper by Prof. Torimoto and colleagues was published in CHEMISTRY LETTERS
A paper by Prof. Torimoto and colleagues was published in ACS APPLIED NANO MATERIALS
A paper by Prof. Torimoto and colleagues was published in ELECTROCHEMISTRY
A paper by Prof. Torimoto and colleagues was published in SMALL
A paper by Prof. Torimoto and colleagues was published in INORGANIC CHEMISTRY COMMUNICATIONS
ResearchResearch themes
The physical and chemical properties of metal and semiconductor particles change greatly depending on their size. By controlling the nanostructure of these materials with chemical methods, the lab aims to create new functional materials that can freely control the flow of light, electrons, and molecules.
View More ↗MembersFaculty
The members of the Torimoto Lab are faculty, secretaries, researchers, doctoral, master's, and undergraduate students, and research students.As of 2026
- ProfessorTsukasa Torimoto
- LecturerKazutaka Akiyoshi
- Assistant ProfessorHiroyuki Okada
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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: “Lab Mol Colloidal quantum dots 02” Lab mol (Ilia Litvinov) / CC BY 4.0 (cropped)
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