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Eguchi Lab
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Molecules change their behavior on nanoscale surfaces, and the lab designs that power.
AboutAbout the lab
Controlling charge distribution to advance nanoscale manufacturing
The Eguchi Lab studies how molecules behave on nanoscale surfaces and uses that knowledge to create new materials.
When people make things by hand, they use forces such as gravity, elasticity, and friction. In chemical manufacturing, however, chemical bonding forces, intermolecular forces, and field forces must be considered at the same time.
By carefully balancing these forces to control the charge distribution of the entire reaction system, the lab aims for precise manufacturing.
The lab's guiding words are “Curiosity has no purpose. Curiosity creates things.”
Key terms
- High-entropy alloy
- An alloy made by mixing about five kinds of metals in roughly equal proportions. It tends to be strong and resistant to heat and corrosion.
- Localized surface plasmon
- A phenomenon in which, when light hits a metal nanoparticle, the electrons on its surface oscillate collectively.
- Layered aluminosilicate
- A material in which oxides of aluminum and silicon are stacked in thin layers. It is the main component of clay.
NewsLab news
A master's student won a Poster Award at the 14th Summer Seminar of the Low-Dimensional Photofunctional Materials Research Group, The Chemical Society of Japan
Successful synthesis of a metastable-phase mesoporous semiconductor (CuTe2)
ResearchResearch themes
The lab aims to create new structures and functions from the delicate balance of chemical bonding forces and field forces. Using the surfaces of metal nanostructures and clay minerals as its stage, it investigates the reactions and optical properties that occur there and connects them to forms such as electrocatalysts and films.
*Illustrative imageMetal Nanostructures and Photoelectrochemistry
The lab synthesized high-entropy alloys, which combine multiple metals, as nanoporous particles and enhanced their activity for the hydrogen evolution reaction as electrocatalysts. It is also studying how to speed up reactions using the heat generated by localized surface plasmons on gold nanoparticles.
*Illustrative imageAccelerating Reactions Using Surfaces
Reactions are usually accelerated by raising the temperature or concentration or by using a catalyst, but the lab showed that adsorbing the reaction substrate onto a clay surface can also accelerate a reaction. Because the activation energy hardly changes, this is not catalysis, and the lab aims to establish it as a fourth way to accelerate reactions.
*Illustrative imageColor Change upon Adsorption
The lab named the phenomenon in which adsorption onto a surface changes the electronic state of dye molecules and thereby changes their color “adsorption chromism.” It investigates, down to the level of charge distribution, how protonation, aggregation, and changes in molecular shape alter optical properties.
*Illustrative imageFilms Made from Clay Alone
Layered aluminosilicates can form films on their own. The lab found that the way gas passes through them changes with particle size, and is exploring their use as packaging materials that do not block oxygen completely, to keep fruits and vegetables fresh.
MembersFaculty
The members of the Eguchi Lab consist of faculty, researchers, research assistants, secretaries, and master's and undergraduate students.As of 2026
- Associate ProfessorMiharu Eguchi
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: “Light spectrum on a wall caused by sunlight going through prism and then handmade glass” Pittigrilli / CC BY-SA 4.0 (cropped)
- Metal Nanostructures and Photoelectrochemistry: “Metal foam - big porosity” Blanchet matthieu / CC BY-SA 3.0 (cropped)
- Accelerating Reactions Using Surfaces: “Disused kaolinite quarry near Măcin” SqueekRO / CC BY-SA 4.0 (cropped)
- Color Change upon Adsorption: “Colored pH indicator (circle)” TheChimist / CC BY-SA 4.0 (cropped)
- Films Made from Clay Alone: “Red Apple” Abhijit Tembhekar from Mumbai, India / CC BY 2.0 (cropped)
- Related lab (Noda Lab): “Nanotube; Ultradark ( )” National Institute of Standards and Technology / Public domain (cropped)
- Related lab (Suga Lab): “Nailoni süntees 2” Thctamm / CC BY-SA 3.0 (cropped)
- Related lab (Shimojima Lab): “Quartz, Tibet” JJ Harrison / CC BY-SA 2.5 (cropped)
- Related lab (Homma Lab): “Microcrystalls of nickel” Michał Milczarek / CC BY-SA 4.0 (cropped)
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