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Green Fabrication Lab
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The lab creates fine particles and joins them using processes with low environmental impact.
AboutAbout the lab
Water joins, loosens, and shapes.
The Green Fabrication Lab develops new process technologies that greatly reduce environmental impact.
Focusing on fine particles, it pursues the green synthesis of fine particles, including nanoparticles, and new methods for joining and assembling them as desired.
The lab accepts students through the “Smart Green Process Field,” a collaborating field of the Department of Environmental and Energy Engineering in the School of Engineering and the Division of Sustainable Energy and Environmental Engineering in the Graduate School of Engineering.
Lab visits are accepted at any time.
Key terms
- Reducing agent
- A chemical commonly used when synthesizing noble metal nanoparticles in a liquid. Some are toxic.
- Open macropores
- Among pores with a diameter of 50 nm or more, those that are interconnected so that gases or liquids can flow through.
- Bottom-up particle joining
- An elemental technology for building structures with functions by stacking fine particles.
NewsLab news
Research results by a doctoral student accepted for publication in Nanoscale (collaborative research)
Research results on bird's-nest-like porous materials accepted for publication in Materials Advances (collaborative research)
Research results by a master's student accepted for publication in Journal of Smart Processing (collaborative research)
Assistant Professor Kozawa receives the APT Outstanding International Contribution Award from the Society of Powder Technology, Japan
Research results by a master's student accepted for publication in ACS Applied Nano Materials (collaborative research)
ResearchResearch themes
The lab develops new process technologies with the aim of greatly reducing environmental impact. Focusing on fine particles in particular, it pursues the green synthesis of fine particles and new methodologies for joining and assembling them as desired.
*Illustrative imageNoble Metal Nanoparticles Made at the Interface with Water
The lab studies methods to synthesize noble metal nanoparticles such as gold and silver near a solid–liquid interface, without using reducing agents or surfactants. The resulting particles stay stably dispersed for a long time, and the lab has also succeeded in immobilizing them on various substrates.
*Illustrative imagePorous Particles Formed by Steam Heating
The lab found that when a carbonate is thermally decomposed in water vapor, oxide particles with labyrinth-like, interconnected open macropores form spontaneously. Compositing conductive particles inside them makes them usable as anode materials for Li-ion batteries. Magnetic particles are being studied for applications in environmental remediation and in biological and medical fields.
*Illustrative imageA Recycling Process to Extract Rare Elements from Solids
The lab develops processes to directly and selectively extract and separate rare elements such as lithium and nickel from solid used materials. Through vapor-mediated solid-to-solid conversion, it can also produce porous materials with three-dimensional hierarchical structures.
*Illustrative imageBottom-Up Particle Joining by Stacking Particles
As a project of the Joint Usage/Research Center for Joining and Welding Science, the lab pursues “bottom-up particle joining,” which builds functional structures by stacking fine particles, together with collaborating researchers in Japan. It works on creating materials that support clean energy conversion and on material recycling.
MembersFaculty
The members of the Green Fabrication Lab consist of a professor, an assistant professor, a visiting professor, researchers, doctoral, master's, and undergraduate students, and administrative assistants.As of 2026
- ProfessorHiroya Abe
- Assistant ProfessorTakahiro Kozawa
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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: “Nanoparticle synthesis techniques” Vicente Neto / CC BY 4.0 (cropped)
- Noble Metal Nanoparticles Made at the Interface with Water: “Gold and silver nanoparticles in labelled Petri dishes” Drkirstyross / CC BY-SA 4.0 (cropped)
- Porous Particles Formed by Steam Heating: “Calcium carbonate” Picture taken August 2005 by User:Walkerma. / Public domain (cropped)
- A Recycling Process to Extract Rare Elements from Solids: “Coscinodiscus oculus-iridis (Ehrenberg) Ehrenberg 1840 diatom shell. Colored SEM image” Pavel.Somov / CC BY-SA 4.0 (cropped)
- Bottom-Up Particle Joining by Stacking Particles: “Cellulose acetate polymeric microparticles prepared by encapsulation methods” Biomatlab.fe / CC BY 4.0 (cropped)
- Related lab (Additive Manufacturing Lab): “Ceramic 3D Printing by Studio Under6” Studio Under / CC BY-SA 3.0 (cropped)
- Related lab (Fabrication Mechanisms Lab): “Professional MotorSport World Expo 2024, Cologne (P1031209)” Matti Blume / CC BY-SA 4.0 (cropped)
- Related lab (Microjoining Lab): “Electronic Printed Circuit Board” JayHand / CC BY-SA 3.0 (cropped)
- Related lab (Joining Structure Analysis Lab): “Tandem welding torch 002” Pipimaru / CC BY-SA 3.0 (cropped)
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