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Sekiguchi Lab
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The lab develops chemical processes that use special environments created by electrical discharge and ultrasound.
AboutAbout the lab
Creating reaction environments with discharge and ultrasound
The Sekiguchi Lab studies chemical processes that use special environments such as electrical discharge and ultrasound.
Plasma generated by electrical discharge contains highly reactive electrons, ions, and radicals.
With it, the lab can decompose harmful substances that are hard to break down, such as chlorofluorocarbons, and synthesize high-performance materials such as ceramic films.
The lab analyzes the reactions and phenomena that occur in these special environments, with the aim of developing them into processes that can be put to practical use.
Key terms
- Plasma
- A gas that has been given energy and come to contain positive and negative ions, electrons, and radicals. It is electrically neutral as a whole
- Dielectric barrier discharge
- A discharge generated between electrodes separated by an insulator. It can produce plasma at atmospheric pressure without raising the temperature
- Radical
- An atom or molecule with an unpaired electron. It reacts very readily with other substances
ResearchResearch themes
The lab analyzes what reactions and phenomena occur in special reaction environments created by electrical discharge and ultrasound. Based on the results, it aims to develop the decomposition of harmful substances and the synthesis of functional materials into practical processes.
*Illustrative imageSteam plasma and its applications
The lab generates steam plasma using microwaves, which couple well with water, and investigates properties such as temperature and radical concentration with spectroscopic methods. It is also advancing applications to waste treatment.
*Illustrative imageDecomposition of harmful gases by electrical discharge
The lab studies methods of decomposing volatile organic compounds such as benzene, an environmental pollutant, using dielectric barrier discharge. By placing a catalyst inside the plasma generated by the discharge, it aims to build a highly efficient decomposition device.
*Illustrative imageSurface treatment with plasma
Using atmospheric-pressure non-equilibrium plasma generated by dielectric barrier discharge, the lab modifies the surfaces of polymers such as polyolefin films and of activated carbon to give them new functions. Because the temperature does not rise, the lab believes plastics can also be treated at low cost.
*Illustrative imageDecomposition and recovery of chlorofluorocarbons
The lab decomposes organohalogen compounds such as chlorofluorocarbons, which destroy the ozone layer and also contribute to global warming, in a thermal plasma fluidized bed. It aims to build a compact decomposition device that also recovers the acid gases produced at the same time.
MembersFaculty
The members of the Sekiguchi Lab are faculty members and master's students.As of 2026
- ProfessorHidetoshi SekiguchiPublications ↗
- Assistant ProfessorSatoshi KodamaPublications ↗
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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: “Plasma wheel 2 med DSIR2018” G1MFG / CC BY-SA 3.0 (cropped)
- Steam plasma and its applications: “Plasmatorch using water steam as plasma-creation gas” Submarine007 / CC BY-SA 3.0 (cropped)
- Decomposition of harmful gases by electrical discharge: “Filamentous Dielectric Barrier Discharge” Devansh.sharma / CC BY-SA 4.0 (cropped)
- Surface treatment with plasma: “Buse plasma à pression atmosphérique” Acxys / CC BY-SA 3.0 (cropped)
- Decomposition and recovery of chlorofluorocarbons: “NASA and NOAA Announce Ozone Hole is a Double Record Breaker” NASA / Public domain (cropped)
- Related lab (森伸介研究室): “Glow discharge regions” Derived file: Chetvorno Original file: Jannis Andrija Schnitzer / CC BY-SA 2.0 (cropped)
- Related lab (松本研究室): “Blue Grass Chemical Agent-Destruction Pilot Plant Control Room Operators ( )” PEO ACWA / CC BY 2.0 (cropped)
- Related lab (多湖・藤墳研究室): “Altona Oil Refinery Victoria” Sgroey / CC BY-SA 4.0 (cropped)
- Related lab (原田研究室): “CO2-Wäscher” IUTAe.V. / CC BY-SA 3.0 de (cropped)
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