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Ono Lab
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The lab uses measurements to uncover the reactions inside atmospheric-pressure plasma and applies the findings to medicine and surface treatment.
AboutAbout the lab
From the fundamentals to applications of atmospheric-pressure plasma
Ono Lab carries out both fundamental and applied research on atmospheric-pressure plasma.
The lab studies the electrons, ions, and reactive species generated in plasma, as well as their reactions.
Through experiments and measurements, the lab clarifies what reactions take place in plasma and what produces its effects.
The lab also works on applications in medicine, such as cancer immunotherapy, and in the surface treatment of materials.
Key terms
- Atmospheric pressure plasma
- Plasma generated in a gas at ordinary atmospheric pressure, without creating a vacuum
- Reactive species
- Atoms or molecules, formed when molecules break apart in plasma, that readily react with other substances
- Streamer discharge
- A thin electrical discharge that extends through air in an instant while branching, when a high voltage is applied
ResearchResearch themes
The lab aims to understand the complex reactions occurring in plasma and to connect that understanding to applications in a wide range of fields, including medicine, the environment, materials, and energy. It consistently pursues both fundamental research based on measurement and applied research such as cancer treatment and surface treatment.
*Illustrative imagePlasma measurement and simulation
The lab investigates highly reactive, short-lived reactive species using laser measurement and optical emission spectroscopy to clarify the reactions in plasma. Through collaborative research, it also measures quantities such as electron density and electric fields with high accuracy. The main target is streamer discharge.
*Illustrative imageTreating cancer with plasma
In studies using mice, the lab has shown that plasma could potentially be used for cancer immunotherapy. It investigates the abscopal effect, in which treatment also acts on distant tumors, the principles of the immune response, and the suppression of recurrence after surgery.
*Illustrative imageSurface treatment with selected reactive species
Using the lab's original method of generating only specific reactive species and applying them to a surface, the lab quantitatively investigates which reactive species cause which reactions. It is also extending this work to surface modification of materials and to functional films.
MembersFaculty
Ono Lab's members consist of faculty, visiting collaborative researchers, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorRyo OnoPublications ↗
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: “Atmospheric-pressure plasma” Alibabble / CC0 (cropped)
- Plasma measurement and simulation: “Corona discharge in atmospheric air 1” Иван Пашков / CC BY 4.0 (cropped)
- Treating cancer with plasma: “Killer T cells surround a cancer cell” The National Institutes of Health / Public domain (cropped)
- Surface treatment with selected reactive species: “Buse plasma à pression atmosphérique” Acxys / CC BY-SA 3.0 (cropped)
- Related lab (Kumada-Sato-Fujii-Umemoto Lab): “Lichtenberg Fractal Figure 01” Timothee Rolland / CC BY-SA 4.0 (cropped)
- Related lab (Ohya Lab): “Perovskite oxide thin film” Magnunor / CC BY-SA 4.0 (cropped)
- Related lab (Tabata-Matsui-Seki Lab): “Pulsed Laser Deposition in Action” Adam Andersen Læssøe / CC BY-SA 4.0 (cropped)
- Related lab (Sekino Lab): “Ferrofluid in magnetic field” Steve Jurvetson / CC BY 2.0 (cropped)
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