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Terashima Lab
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The lab creates materials and chemical processes using plasma in liquids.
AboutAbout the lab
Plasma opening the way to materials, processes, and the SDGs
The Terashima Lab studies low-temperature plasma at low pressure, at atmospheric pressure, and in liquids.
In particular, the lab seeks to understand and control plasma generated inside liquids, and applies it to advanced chemical processes and to the synthesis of new materials.
Plasma is the fourth state of matter after solid, liquid, and gas, a high-energy state in which ions and electrons move freely.
With these processes and materials, the lab aims for a sustainable, circular society, and is also working to make the technology usable in space, including on the Moon.
Key terms
- Plasma
- The fourth state of matter after solid, liquid, and gas. A high-energy state in which ions and electrons move freely.
- In-liquid plasma
- A technology that generates plasma inside bubbles in a liquid
- Plasma functional water
- A liquid fertilizer made from air and water by an in-water plasma method
NewsLab news
A student received the Excellent Master's Thesis Award of the Department of Pure and Applied Chemistry for fiscal 2025
A master's student received a Poster Award at the international conference MRM2025
A master's student received an Excellent Presentation Award at the 19th Flux Growth Research Presentation Meeting of Japan
An undergraduate student received a Student Encouragement Poster Award at the 39th Diamond Symposium
Professor Terashima received the Tokyo University of Science Outstanding Researcher Special Award for fiscal 2024
ResearchResearch themes
Through the development of materials and processes using plasma, the lab aims to realize a sustainable, circular society. Through joint research with other labs in the department, universities and research institutions inside and outside the university, and companies, it states a commitment to contributing to the achievement of the SDGs.
*Illustrative imageDiamond Synthesis Using Plasma in Alcohol
Using a microwave in-liquid plasma method, which generates plasma inside bubbles in a liquid, the lab succeeded in synthesizing diamond at 100 times the speed of conventional technology. It is now working on making the films larger in area.
*Illustrative imageFertilizer from Plasma Functional Water, Modeled on Lightning
The lab studies "plasma functional water," made from air and water by an in-water plasma method, as a liquid fertilizer. It has also been found to help prevent algae growth, and the lab aims to elucidate the mechanism and scale up the equipment.
MembersFaculty
The members of the Terashima Lab consist of faculty, a special advisor, engineers, a secretary, and master's and undergraduate students.As of 2026
- ProfessorChiaki Terashima
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: “Fancy Yellow Diamond created by Syntechno LTD” Igor Stratichuk / CC BY-SA 4.0 (cropped)
- Diamond Synthesis Using Plasma in Alcohol: “Colorless Diamond created by Syntechno LTD” Igor Stratichuk / CC BY-SA 4.0 (cropped)
- Fertilizer from Plasma Functional Water, Modeled on Lightning: “Lightning Pritzerbe 01 (MK)” Mathias Krumbholz / CC BY-SA 3.0 (cropped)
- Related lab (井手本・
北村研究室): “1.5V Lithium Battery Charger and Cable Front Picture” TealComet / CC BY-SA 4.0 (cropped) - Related lab (藤本研究室): “Celtic pottery kiln, Samborowice” Marsilar / CC BY-SA 4.0 (cropped)
- Related lab (郡司・山本研究室): “Rated-viscosity silicone oils - силиконовые масла нормрованной вязкости” Retired electrician / CC0 (cropped)
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