Plasma-based in situ functionalization based on functional nitrogen science

Functional nitrogen science is now emerged for effective utilization of reactive nitrogen species (RNS). The technologies are related to water and air plasma-based nitrogen fixation. Electron impact reactions and chemical reactions among nitrogen, oxygen, and hydrogen, can occur on non-equilibrium plasma processing. Key issues are on in situ generation of RNS at the point of use and plasma-based nitrogen cycles of ammonia and nitric acid. (link to) Ishikawa Jpn. J. Appl. Phys. 61 SA0802 (2022).

Nitrogen derivatives (Diagram): Short-lived nitrogen derivatives react to generate various RNS in situ through oxidation and hydrogenation.

Upcoming meeting

Color: Oversea, Domestic


June 21, 2022
9th Global plasma forum to be held online.
June 24, 2022 Committee
(独)日本学術振興会 プラズマ材料科学第153委員会 第156回研究会『高電圧・プラズマの農業・食品への利用』 (in Japanese, closed meeting)
June 25, 2022 Committee
(独)日本学術振興会 プラズマ材料科学第153委員会 第157回研究会『大気圧低温プラズマシミュレーション』(in Japanese, closed meeting)
July 1, 2022 Chair
Plasma society (in Japanese) to be held ES hall and online.
July 11-15, 2022
(not attend) (ESCAMPIG)
July 15, 2022
D2中間報告会 (in Japanese) to be held online.
June 26-29, 2022
ALE AVS 22nd International Conference on Atomic Layer Deposition (ALD 2022) featuring the 9th International Atomic Layer Etching Workshop (ALE 2022) to be held at Ghent, Belgium (web) Dr T-T-T-Nga Nguyen will have an oral presentation ALE-TuM203 on June 28, 2022.
June 27-July 1, 2022
ICPM The 9th International Conference on Plasma Medicine (ICPM9) to be held at Eindhoven Institute of Technology, Utrecht, the Netherlands. (Web)
July 25-28, 2022
7th International Conference on Advances in Functional Materials (AFM) "Development of Functional Materials for a Better World" to be held at Centennial Hall, Kyushu University, Japan. (Web)
August 3-6, 2022
5th International Conference of Young Researchers on Advanced Materials of International Union of Materials Research Societies (IUMRS-ICYRAM2022) to be held at the Centennial Hall, Kyushu University School of Medicine, Fukuoka, Japan. (Web)
August 8-10, 2022
August 28-September 2, 2022 August 29-September 3, 2021
(not attend) 23th International Conference on Gas Discharges and their Applications (GD2020) to be held at Greifswald, Germany. (web)
September 4-9, 2022
9th Central European Symposium on Plasma Chemistry (CESPC-9) to be held at Slovakia. (Web PlAgri), (Web CESPC-9)
September 11-16, 2022
22nd International Vacuum Congress (IVC) to be held at Sapporo, Japan. (Web)
September 20-23, 2022
応物秋 2022年(令和4年)秋季学術講演会 to be held on Tohoku University, Sendai, Japan.
September 26-29, 2022
54th International Conference on Solid State Devices and Materials (SSDM) to be held at Makuhari, Chiba, Japan.
October 3-7, 2022 Talk
GEC 11th International Conference on Reactive Plasmas (ICRP) (Web) and 75th Gaseous Electric Conference (GEC) to be held at Sendai, Japan. (web) Dr Ishikawa will have an invited talk entitled "Plasma-functional nitrogen effects on biological, medical, and agricultural applications". Deadline: June 15 10, 2022
October 12-14, 2022
31st Asian session Advanced Metallization Conference (ADMETA Plus) 2022 to be held online (Web)
November 6-11, 2022 Talk
AVS 68th AVS International Symposium and Exhibition to be held at David L. Lawrence Convention Center, Pittsburgh, PA, USA. Dr Ishikawa serves the committee of Plasma Science Technology Division.
November 8-11, 2022
35th International Microprocesses and Nanotechnology Conference (MNC 2022), to be held at JR Hotel Clement Tokushima, Japan. Dr Ishikawa serves the committee of Atomic Layer Processing (ALP).
November 13-16, 2022 Talk
Korea International Semiconductor Conference on Manufacturing Technology 2022 to be held at Paradise Hotel, Busan, Korea (Web) Dr Ishikawa will have an invited talk "Nanoscale dry processes for controlling atomic layer reactions and fabrication of high-aspect-ratio features"
November 18, 2022
プラズマエレクトロニクス講習会 (in Japanese) online
November 22-25, 2022
プラズマ・核融合学会 第39回年会 to be held on Toyama, Japan
November 24-25, 2022
DPS 44th International symposium on dry process (DPS) to be held at Osaka Internationl Convention Center, Osaka, Japan. (Web) Deadline: July 22, 2022
December 5-7, 2022
32nd Material Research Society of Japan (MRS-J) to be held at Yokohama, Japan. (Web) Deadline: August 19, 2022


March , 2023
ISPlasma 2023 to be held at Gifu, Japan.
March 15-18, 2023
応物春 2023年(令和5年)第70回応用物理学会春季学術講演会 於:上智大学 to be held on Sophia University, Tokyo, Japan.
April 16-21, 2023
4th International Conference on Data Driven Plasma Science (ICDDPS-4) to be held at Okinawa Institute of Science and Technology (OIST), Okinawa, Japan. (Web)
May 21-26, 2023 May 15-20, 2022 May 23-28, 2021
ISPC 25th International Symposium on Plasma Chemistry (ISPC) to be held at Kyoto, Japan. (Web)
July, 2023
International Conference on Phenomena in Ionized Gases (ICPIG)to be held at the Netherlands
September 10-14, 2023
20th International Symposium on Laser-Aided Plasma Diagnostics (LAPD20) to be held at Kyoto Garden Palace Hotel, Kyoto, Japan. (Web)
September 19-23, 2023
応物秋 2023年(令和5年)秋季学術講演会 to be held on Kumamoto Castle Hall, Kumamoto, Japan.
September , 2023
55th International Conference on Solid State Devices and Materials (SSDM) to be held at Nagoya University, Japan.
September, 2023 February 7-11, 2022 September 26-30, 2021 Talk
AEPSE 13th Asian-European International Conference on Plasma Surface Engineering (AEPSE 2021) to be held at BEXCO, Busan, Korea. (Web) Dr Ishikawa will have a tutorial lecture of "Plasma in Healthcare : As tool of Regenerative Medicine and Development"
December 11-16, 2023
(MRM2023) IUMRS-ICA Kyoto International Conference Center, Kyoto, Japan


March 15-18, 2023
応物春 2024年(令和6年)第71回応用物理学会春季学術講演会 to be held on Tokyo City University, Tokyo, Japan.

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Metabolomic profiles display a novel mechanism on cell death that is induced specifically by incubation in the non-thermal plasma treated solutions

The plasma-activated lactated solution (PAL) exhibits antitumor effects in glioblastoma U251SP cells. The PAL-treated U251SP cells exhibited changes in intracellular metabolites that were reductive in the redox state.

Non-thermal plasma–activated lactate solution kills U251SP glioblastoma cells in an innate reductive manner with altered metabolism

Kenji Ishikawa, Yugo Hosoi et al. Archives of Biochemistry and Biophysics 688, 108414 (pp. 1-9) (July 30, 2020). link

Nonthermal plasma-activated medium (PAM) modified metabolomic profiles in glycolysis of U251SP glioblastoma

Naoyoyuki Kurake, Kenji Ishikawa et al. Archives of Biochemistry and Biophysics 662, pp.83-92 (February 15, 2019). link

Real-time in situ ESR

Our paper was published on-line in the Applied Physics Letters (IF 2011 = 3.844) on July 2 issue of 2012.

Real-time In Situ Electron Spin Resonance Measurements on Fungal Spores of Penicillium digitatum during Exposure of Oxygen Plasmas

Kenji Ishikawa et al. Appl. Phys. Lett. 101, 013704 (2012). link, arXiv

Real-time in situ ESR

Our paper was published in the Journal of Physical Chemistry Letters (I.F. 2011 = 6.213)


Synergistic Formation of Radicals by Irradiation with both Vacuum Ultraviolet and Atomic Hydrogen: a Real-time in situ Electron Spin Resonance Study

We report on the surface modification of polytetrafluoroethylene (PTFE) as an example of soft- and bio-materials that occur under plasma discharge by kinetics analysis of radical formation using in situ real-time electron spin resonance (ESR) measurements. During irradiation with hydrogen plasma, simultaneous measurements of the gas-phase ESR signals of atomic hydrogen and the carbon dangling bond (C-DB) on PTFE were performed. Dynamic changes of the C-DB density were observed in real time, where the rate of density change was accelerated during initial irradiation and then became constant over time. It is noteworthy that C-DBs were formed synergistically by irradiation with both vacuum ultraviolet (VUV) and atomic hydrogen. The in situ real-time ESR technique is useful to elucidate synergistic roles during plasma surface modification.

Kenji Ishikawa et al. J. Phys. Chem. Lett. 2, 1278 (2011). link

This paper won the 11th Plasma Electronics Award awarded by the Plasma Electronics division of the Japanese Society of Applied Physics on March 28, 2013.

Copyright Kenji Ishikawa (c) 2009-2020 Center for Low-temperature plasma sciences, Nagoya University.

Last-modified: 2022-06-17 (金) 15:46:10