Faculty Members

Professor
HATTA, Akimitsu

Dr. (Eng.), Osaka University, Japan, 1996

Year of birth: 1963
Gender: Male
Job titles: Vice President
Affiliation:

- School of Systems Engineering
- Electronic and Photonic Systems Engineering Course, Department of Engineering, Graduate School of Enginering
- Energy Engineering Course, Department of Engineering, Graduate School of Enginering
- Electronic and Photonic Engineering Course, Department of Engineering, Graduate School of Enginering
- Research Unit for Advanced Characterization for Future Materials, Center for Nanotechnology, Research Institute
Personal web site: http://www.ele.kochi-tech.ac.jp/ahatta/index.html
Article from the "Cutting-edge Research and Social Contribution"：
https://www.kochi-tech.ac.jp/english/power/research/world-first_ultra-high_precision_measurement_technology_clarifying_the_plasma_irradiated_water_react.html

Areas of specialization	Plasma Science and Engineering Electric and Electronic Material Energy and Environmental Education
Laboratory/research office	Plasma Engineering Laboratory Non-equilibrium discharge plasma in which electron temperature easily exceeds several tens of thousands degrees exists everywhere, such as lightning in nature and discharge lamp. The matter in plasma phase is highly excited state and/or highly reactive condition inducing active chemical reactions and/or intense light emission. Plasma application technologies will be established through the studies on production and control of discharge plasma in atmospheric environment, in water, or in reactive gases, and analysis on fabricated thin films and reactive chemical species.
Current research topics	UV Absorption Spectroscopy of Plasma Activated Water Elemental Analysis on Sea Water at High Pressure by Micro-discharge Plasma Optical Emission Spectroscopy Bike-Dynamo: Human Power Generator Improvement of Micro-Hydroelectric Generator in Funaire Primary School
Educational background	1989: Master, Kyoto University, Japan 1987: Bachelor, Kyoto University, Japan
Professional background	1992-1998: Research Associate, Department of Electrical Engineering, Osaka University
Licenses
Academic societies	Japan Sciety of Applied Physics Institute of Electrical Engineering of Japan Illuminating Engineering Institute of japan Japan Association of Energy and Environmental Education The Institute of Electrostatics Japan

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Courses

* Courses provided in English are shown with (E) mark

Undergraduate school	Principles of Electric Circuits Energy Resource Engineering Introduction to Electric Power Systems Outline of Engineering Graduation Thesis Electric Machines Electrical Installation and Information Facilities in Building Circuit Theory 1
Graduate school	Plasma Engineering Seminar 1 Seminar 2 Advanced Seminar 1 Advanced Seminar 2 Individual Work for Graduate Advanced Energy Engineering

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Research activities

Research papers	Authors: Kota Tomatsu, Takahiro Aoki, Kenji Kobayashi, Tomohiko Omura, Akimitsu Hatta Title: In situ scanning electron microscopy of hydrogen embrittlement by near atmospheric-pressure hydrogen microplasma jet Journal: Rev. Sci. Instrum., Vol. 94, pp. 023707-1-023707-11 Year: 2023 Authors: Sukma Wahyu Fitriani, Hideki Yajima, Akimitsu Hatta Title: Photoemission-induced atmospheric-pressure DC gas discharge using back-illuminated nano thickness photocathode Journal: Appl. Phys. Express, Vol. 15, pp. 116001-1-116001-5, IOP Year: 2022 Authors: Akimitsu Hatta, Vladislav Gamaleev, J.-S. Oh, Hiroshi Furuta Title: Microplasma Discharge in Deionized Water and Artificial Seawater Journal: International Journal of Plasma Environmental Science and Technology, Vol. 13, No. 1, pp. 1-6, The Institute of Electrostatics Japan Year: 2020 Authors: Vladislav Gamaleev, Mineo Hiramatsu, Masafumi Ito 2, Hiroshi Furuta, Akimitsu Hatta Title: Analysis of the Preheating Phase of Micro-Arc Discharge in Seawater, Operated Using a Needle-to-Plane Electrode with Variation in the Tip Shape Journal: Plasma, Vol. 2, No. 3, pp. 303-315, MDPI Year: 2019 Authors: Vladislav Gamaleev, Hiroshi Furuta, Akimitsu Hatta Title: Atomic Emission Spectroscopy of Microarc Discharge in Sea Water for On-Site Detection of Metals Journal: IEEE Trans. Plasma Sci., Vol. 47, No. 4, pp. 1841-1850, IEEE Year: 2019 Authors: Kotaro Ogawa, Hideki Yajima, Jun-Seok Oh, Hiroshi Furuta, Akimitsu Hatta Title: Effects of sheath gas flow on He atmospheric pressure plasma jet Journal: Appl. Phys. Express, Vol. 12, pp. 036001-1-036001-5, IOPScience Year: 2019 Authors: Kotaro Ogawa, Jun-Seok Oh, Nishtha Gaur, Sung-Ha Hong, Hirofumi Kurita, Akira Mizuno, Akimitsu Hatta, Robert D. Short, Masafumi Ito, Endre J. Szili Title: Modulating the concentrations of reactive oxygen and nitrogen species and oxygen in water with helium and argon gas and plasma jets Journal: Jpn. J. Appl. Phys., Vol. 58, No. SA, pp. SAAB01-1-SAAB01-9, PCPAP Year: 2018 Authors: Vladislav Gamaleev, Hiroshi Furuta, Akimitsu Hatta Title: Generation of micro-arc discharge plasma in highly pressurized seawater Journal: Applied Physics Letters, Vol. 113, pp. 214102-1-214102-5, AIP Publishing Year: 2018 Authors: Mamun Md Abdullah Al, Hiroshi Furuta, Akimitsu Hatta Title: Preparation of hydrogenated amorphous carbon films using a microsecond-pulsed DC capacitive-coupled plasma chemical vapor deposition system operated at high frequency up to 400 kHz Journal: Japanese Journal of Applied Physics, Vol. 57, pp. 06JF02-1-06JF02-8, IOP Publishing Year: 2018 Authors: Mamun Md Abdullah Al, Hiroshi Furuta, Akimitsu Hatta Title: Novel high-frequency energy-efficient pulsed-dc generator for capacitively coupled plasma discharge Journal: Review of Scientific Instruments, Vol. 89, p. 033506, AIP Publishing Year: 2018 Authors: Hiroki Miyaji, Adam Pander, Keisuke Takano, Hideo Kohno, Akimitsu Hatta, Makoto Nakajima, Hiroshi Furuta Title: Optical reflectance of patterned frost column-like CNT forest for metamaterial applications Journal: Diamond and Related Materials, Vol. 83, pp. 196-203, Elsevier B.V. Year: 2018 Authors: Endre J Szili, Jun-Seok Oh, Hideo Fukuhara, Rishabh Bhatia, Nishtha Gaur, Cuong K Nguyen, Sung-Ha Hong, Satsuki Ito, Kohtaroh Ogawa, Chiaki Kawada, Taro Shuin, Masayuki Tsuda, Mutsuo Furihata, Atsushi Kurabayashi, Hiroshi Furuta, Masafumi Ito, Keiji Inoue, Akimitsu Hatta, Robert D Short Title: Modelling the helium plasma jet delivery of reactive species into a 3D cancer tumour Journal: Plasma Sources Sci. Technol., Vol. 27, p. 014001, IOP Publishing Year: 2017 Authors: Jun-Seok Oh, Endre J. Szili, Kotaro Ogawa, Robert D. Short, Masafumi Ito, Hiroshi Furuta, Akimitsu Hatta Title: UV–vis spectroscopy study of plasma-activated water: Dependence of the chemical composition on plasma exposure time and treatment distance Journal: Japanese Journal of Applied Physics, Vol. 57, No. 1, p. 0102B9, IOP Publishing Year: 2017 Authors: Vladislav Gamaleev, Hiroshi Furuta, Akimitsu Hatta Title: Detection of metal contaminants in seawater by spectral analysis of microarc discharge Journal: Japanese Journal of Applied Physics, Vol. 57, No. 1, p. 0102B8, IOP Publishing Year: 2017 Authors: Khanit Matra, Hiroshi Furuta, Akimitsu Hatta Title: DC Microplasma Jet for Local a:C-H Deposition Operated in SEM Chamber Journal: Micromachines, Vol. 8, No. 7, p. 211, MDPI Year: 2017 Authors: Duriyasart Farkfun, Masataka Ohtani, Jun-Seok Oh, Akimitsu Hatta, Kazuya Kobiro Title: A new approach to surface activation of porous nanomaterials using non-thermal helium atmospheric pressure plasma jet treatment Journal: Chem. Commun., Vol. 53, pp. 6704-6707, Royal Society of Chemistry Year: 2017 Authors: Vladislav Gamaleev, Jun-Seok Oh, Hiroshi Furuta, Akimitsu Hatta Title: Investigation of Effect of Needle Electrode Configuration on Microplasma Discharge Process in Sea Water Journal: IEEE Transactions on Plasma Science, Vol. 45, No. 4, pp. 754-760, IEEE Year: 2017 Authors: Jun-Seok Oh, Shinya Kojima, Minoru Sasaki, Akimitsu Hatta, Shinya Kumagai Title: Plasma cell treatment device Plasma-on-Chip: Monitoring plasma generated reactive species in microwells Journal: Scientific Reports, Vol. 7, pp. 41953-1-41953-11, Nature Publishing Group Year: 2017 Authors: Jun-Seok OH, Xanthe Strudwick, Robert D. Short, Kohtaroh Ogawa, HATTA Akimitsu, FURUTA Hiroshi, Nishtha Gaur, Sung-Ha Hong, Allison J. Cowin, Hideo Fukuhara, Keiji Inoue, Masafumi Ito, Christine Charles, Roderick W. Boswell, James W. Bradley, David B. Graves, Endre J. Szili Title: How plasma induced oxidation, oxygenation, and de-oxygenation influences viability of skin cells Journal: Applied Physics Letters, Vol. 109, No. 20, pp. 203701-1-203701-5, American Institute of Physics Year: 2016 Authors: OH Jun-Seok, Hideki Yajima, Keiya Hashida, Tsunehisa Ono, Tatsuo Ishijima, Izumi Serizawa, FURUTA Hiroshi, HATTA Akimitsu Title: In-situ uv absorption spectroscopy for observing dissolved ozone in water Journal: Journal of Photopolymer Science and Technology, Vol. 29, No. 3, pp. 427-432, The Society of Photopolymer Science and Technology Year: 2016 Authors: OH Jun-Seok OH, Endre J Szili, Nishtha Gaur, Sung-Ha Hong, FURUTA Hiroshi, Hirofumi Kurita, Akira Mizuno, HATTA Akimitsu, Robert D Short Title: How to assess the plasma delivery of RONS into tissue fluid and tissue Journal: Journal of Physics D: Applied Physics, Vol. 49, No. 30, pp. 304005-304017, IOP Publishing Year: 2016 Authors: Vladislav Gamaleev, You Okamura, Kensuke Kitamura, Yuusuke Hashimoto, OH Jun-Seok, FURUTA Hiroshi, HATTA Akimitsu Title: Investigation of microplasma discharge in sea water for optical emission spectroscopy Journal: Japanese Journal of Applied Physics, Vol. 55, No. 752, pp. 07LC03-1-07LC03-5, IOP Publishing Year: 2016 Authors: OH Jun-Seok, Maito Kakuta, FURUTA Hiroshi, Hiroshi Akatsuka, HATTA Akimitsu Title: Effect of plasma jet diameter on the efficiency of reactive oxygen and nitrogen species generation in water Journal: Japanese Journal of Applied Physics, Vol. 55, No. 6, pp. 06HD01-1-06HD01-6, Japan Society of Applied Physics Year: 2016 Authors: Pander Adam Michal, HATTA Akimitsu, FURUTA Hiroshi Title: Optimization of catalyst formation conditions for synthesis of carbon nanotubes using Taguchi method Journal: Applied Surface Science, Vol. 371, pp. 425-435, Elsevier Year: 2016 Authors: OH Jun-Seok, Endre J. Szili, Satsuki Itou, Sung-Ha Hong, Nishtha Gaur, FURUTA Hiroshi, Robert D. Short, HATTA Akimitsu Title: Slow molecular transport of plasma-generated reactive oxygen and nitrogen species and O2 through agarose as surrogate for tissue Journal: Plasma Medicine, Vol. 5, No. 2-4, pp. 125-143, Begell House Year: 2016 Authors: N. Gaur, E.J. Szili, JUN-SEOK OH, S.-H. Hong, A. Michelmore, D.B. Graves, HATTA Akimitsu, R.D. Short Title: Combined effect of protein and oxygen on reactive oxygen and nitrogen species in the plasma treatment of tissue Journal: Applied Physics Letters, Vol. 107, p. 103703, AIP Publishing Year: 2015 Authors: JUN-SEOK OH, Endre J. Szili, Nishtha Gaur, Sung-Ha Hong, FURUTA Hiroshi, Robert D. Short, HATTA Akimitsu Title: In-situ UV Absorption Spectroscopy for Monitoring Transport of Plasma Reactive Species through Agarose as Surrogate for Tissue Journal: Journal of Photopolymer Science and Technology, Vol. 28, No. 3, pp. 439-444, The Society of Photopolymer Science and Technology Year: 2015 Authors: Endre J Szili, JUN-SEOK OH, Sung-Ha Hong, HATTA Akimitsu, Robert D Short Title: Probing the transport of plasma-generated RONS in an agarose target as surrogate for real tissue: dependency on time, distance and material composition Journal: Journal of Physics D: Applied Physcis , Vol. 48, IOP Publishing Ltd Year: 2015 Authors: Toru Harigai, Kouyou Iwasa, FURUTA Hiroshi, HATTA Akimitsu Title: Hydrophilic DLC surface induced by nanostructures formed by RF O2 plasma etching with metal micromasks Journal: IEEE Transactions on Plasma Science, Vol. 42, No. 12, pp. 3858-3861, Institute of Electrical and Electronics Engineers Inc. Year: 2014 Authors: Yuuki Yasuoka, Toru Harigai, JUN-SEOK OH, FURUTA Hiroshi, HATTA Akimitsu, Tsuneo Suzuki, Hidetoshi Saitoh Title: Diamond-like carbon films from CO source gas by RF plasma CVD method Journal: Japanese Journal of Applied Physics, Vol. 54, IOP Science Year: 2014 Authors: JUN-SEOK OH, FURUTA Hiroshi, HATTA Akimitsu, James W. Bradley Title: Investigating the effect of additional gases in an atmospheric-pressure helium plasma jet using ambient mass spectrometry Journal: Japanese Journal of Applied Physics, Vol. 54, IOP Science Year: 2014 Authors: JUN-SEOK OH, Yoshiaki Kakuta, Yuuki Yasuoka, FURUTA Hiroshi, HATTA Akimitsu Title: Localized DLC etching by a non-thermal atmospheric-pressure helium plasma jet in ambient air Journal: Diamond Related Materials, Vol. 50, Elsevier Year: 2014 Authors: Yuji Kusumoto, FURUTA Hiroshi, Kazuki Sekiya, Hirofumi Koji, HATTA Akimitsu Title: Electrical conductance behavior of thin Ni catalyst films during intermittent direct current magnetron sputtering Journal: J. Vac. Sci. Technol. A, Vol. 32, pp. 031502-1-031502-5, AVS: Science & Technology of Materials, Interfaces, and Processing Year: 2014 Authors: HARIGAI Toru, IWASA Koyo, KOJI Hirofumi, NITTA Noriko, FURUTA Hiroshi, HATTA Akimitsu Title: Analysis on Self-Organized Formation of Nanofibers on Diamond-Like Carbon Film Surface during RF O2 Plasma Etching Journal: Transactions of the Materials Research Society of Japan, Vol. 38, No. 3, pp. 447-450, The Materials Research Society of Japan Year: 2013 Authors: Tooru Harigai, Yuuki Yasuoka, NITTA Noriko, FURUTA Hiroshi, HATTA Akimitsu Title: X-ray reflectivity analysis on initial stage of diamond-like carbon film deposition on Si substrate by RF plasma CVD and on removal of the sub-surface layer by oxygen plasma etching Journal: Diamond and Related Materials, Vol. 38, pp. 36-40, Elsevier Year: 2013 Authors: FURUTA Hiroshi, KOJI Hirofumi, KOMUKAI Takuji, HATTA Akimitsu Title: Long Lifetime Emission from Screen Printing Carbon Nanotubes over 45,000 Hours at 1.27 mA/cm² with 10% Duty Ratio Journal: Diamond and Related Materials, Vol. 35, pp. 29-35, Elsevier Year: 2013 Authors: Khanit MATRA, Yuusuke Mizobuchi, FURUTA Hiroshi, HATTA Akimitsu Title: Local Sputter Etching by Micro Plasma Jet in SEM Journal: Vacuum, Vol. 87, pp. 132-135, Elsevier Year: 2013 Authors: KOJI Hirofumi, FURUTA Hiroshi, SEKIYA Kazuki, NITTA Noriko, HARIGAI Tooru, HATTA Akimitsu Title: Increased CNT Growth Density with an Additional Thin Ni Layer on the Fe/Al Catalyst Film Journal: Diamond and Related Materials, Elsevier Year: 2013 Authors: Hirofumi Kouji, Tooru Harigai, NITTA Noriko, FURUTA Hiroshi, HATTA Akimitsu Title: Magnetron Sputtering Deposition of Additional Ni Thin Films on the Fe/Al Multi-layered Catalyst Film for the Growth Control of Carbon Nanotubes Journal: Transactions of the Materials Research Society of Japan, Vol. 37, No. 4, pp. 511-514, Materials Research Society of Japan Year: 2012 Authors: Tooru Harigai, Hirofumi Koji, Hiroshi Furuta, Akimitsu Hatta Title: Formation of Nanofibers on the Surface of Diamond-Like Carbon Films by RF Oxygen Plasma Etching Journal: Japanese Journal of Applied Physics, Vol. 50, pp. 08JF12-1-08JF12-5, The Japan Society of Applied Physics Year: 2011 Authors: Keiji Inoue, Takashi Karashima, Tatsuo Iiyama, Shingo Ashida, Masayuki Kamada, Taro Shuin, Parijatha Rao, Atsushi Kurabayashi, Mutsuo Furihata, Akimitsu Hatta Title: Pathobiological Influence of a Radiofrequency Ablation System Journal: Pathobiology Year: 2010 Authors: C.Y. Li, A. Hatta Title: Nanowhiskers formation by radio frequency Ar/O2 plasma etching of aluminum coated diamond films Journal: Thin Solid Films, Vol. 515, No. 9, pp. 4172-4176 Year: 2007 Authors: Chaoyang Li, Akimitsu Hatta Title: Whiskers formation mechanism in radio frequency Ar/O2 plasma etching of polycrystalline diamond films with Al sputtering Journal: Thin Solid Films, Vol. 515, pp. 4172-4176 Year: 2007 Authors: Akimitsu Hatta, Shikou Kaneko, Md. Kamrul Hassan Title: Hydrogen Permeation through Diamond-Like Carbon Thin Films Coated on PET Sheet Journal: Plasma Processes and Polymers, Vol. 4, No. S1, pp. S241-S244 Year: 2007 Authors: Chaoyang Li, Akimitsu Hatta Title: Electrical and structural properties on nanowhiskers fabricated on iron coated diamond films by radio frequency O2 plasma etching Journal: Journal of New Materials for Electrochemical Systems, Vol. 10, pp. 221-224 Year: 2007 Authors: Akimitsu Hatta, Hiroshi Nakatsuma, Keishi Yanai, Tsuyoshi Nishikawa Title: Cold Cathode of p-type Semiconducting Diamond Films for Gas Discharge Journal: Plasma Processes and Polymers, Vol. 4, No. S1, pp. S942-S945 Year: 2007 Authors: Chaoyang Li, Akimitsu Hatta Title: Properties comparison of diamond nanowhiskers obtained from etching diamond films with different metal coatings in radio frequency plasma Journal: Jpn. J. Appl. Phys., Vol. 45, pp. 8378-8380 Year: 2006 Authors: Chaoyang Li, Akimitsu Hatta Title: Function of aluminum coating on fabrication of diamond nanowhiskers in radio frequency plasma etching Journal: Diamond and Related Materials, Vol. 15, pp. 1122-1125 Year: 2006 Authors: Chaoyang Li, Akimitsu Hatta Title: Effect of metal coating on the formation of diamond whiskers in O2 RF Plasma Journal: Diamond and Related Materials, Vol. 15, pp. 357-360 Year: 2006 Authors: Chaoyang Li, HATTA Akimitsu Title: Preparation of diamond whiskers using Ar/O2 plasma etching Journal: Diamond and Related Materials, Vol. 14, pp. 1780-1783 Year: 2005 Authors: Chaoyang Li, Hiroaki Yoshimura, Akimitsu Hatta Title: Fabrication of Diamond Nano-whiskers by Reactive Ion Etching Journal: Trans. MRS-J, Vol. 30, pp. 287-290 Year: 2005
Invited lectures	Micro-arc discharge plasma in high-pressurized sea water, 2nd Asia-Pacific Conference on Plasma Physics (AAPPS-DPP2018), Kanazawa, 2018 Micro-plasma Processing in Scanning Electron Microscope, 5th Int. Cong. on Microscopy & Spectroscopy (INTERM 2018), Oludeniz, Mugla, Turkey, 2018
Grants-in-Aid for Scientific Research from the Japanese government	Project title: In-situ analysis of rare metal ions under deep sea by optical emission spectroscopy of discharge plasma operated in high-pressure water Category: Grant-in-Aid for Challenging Exploratory Research Project number: 26600129 Project period: 2014-2015 Total budget amount: 3,900,000 yen Keywords:

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Social activities

Committee roles	Technical program committee member, the 7th Thai-Nichi Inst. of Tech. Academic Conf.(TNIAC2021) and the 6th Int. Conf. on Business and Industrial Research (ICBIR2021) , Thai-Nichi Institute of Technology, 2020-2021
Published books	Springer Proceedings in Physics Volume 224 Advanced Materials Proceedings of the International Conference on "Physics and Mechanics of New Materials and Their Applications", PHENMA 2018 Chapter 24 Investigation of Micro-arc Discharge in Deep Sea Water at High Pressure, Springer Nature Switzerland, 2019, ISBN 978-3-030-198

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