• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Realization of a new ultra-compact ion propulsion system using an electron source with the inverted potential structure at the electron emission surface compared with the conventional one

Research Project

Project/Area Number 18K18910
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 24:Aerospace engineering, marine and maritime engineering, and related fields
Research InstitutionYokohama National University

Principal Investigator

Takao Yoshinori  横浜国立大学, 大学院工学研究院, 准教授 (80552661)

Co-Investigator(Kenkyū-buntansha) 村上 勝久  国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 主任研究員 (20403123)
Project Period (FY) 2018-06-29 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords電気推進 / 電子源 / グラフェン / イオン源 / 超小型衛星
Outline of Final Research Achievements

Focusing on neutralizers or electron sources, which are the bottleneck in realizing a highly efficient ion propulsion system that can be installed in nanosatellites, we have attempted to use a propellant-free electron source using graphene, which has never been used in the past. The maximum emitted electron current of 6.0 mA was achieved at an applied voltage of 11 V in an electron source consisting of 380 elements with a single electron emission surface of 100 μm squared in a 3 mm square wafer. As a result, the current density was equivalent to that of a conventional small plasma neutralizer, while the electron generation cost was more than one order of magnitude lower than that of a conventional plasma neutralizer. On the other hand, in the ion source, the magnetic field arrangement and grid electrodes were optimized, and finally, a maximum beam current of 9.2 mA was obtained at a discharge power of 9.2 W.

Academic Significance and Societal Importance of the Research Achievements

超小型衛星に軌道遷移の自由度を与え、かつ、運用終了後のデブリ化を防止するためにも、高性能な超小型宇宙推進機が求められている。様々な推進機の候補があるが、既に宇宙での利用実績が豊富なイオン推進機はその候補の一つである。従来の超小型イオン推進機は既存の技術を小型化することでしか対応できていない中、これまでに無い新しい電子源として、低電圧駆動可能で高電流密度が得られるグラフェンを利用した推進剤不要な電子源の利用は、電子放出面の電位がプラズマ電位に近いという従来と異なる領域でのプラズマ生成の探索となり学術的意義のある研究である。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (28 results)

All 2022 2021 2020 2019 2018 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (22 results) (of which Int'l Joint Research: 7 results,  Invited: 2 results) Remarks (2 results)

  • [Journal Article] Microthrusters indispensable for nano/microsatellites that will lead the next-generation space industry2021

    • Author(s)
      鷹尾 祥典
    • Journal Title

      Oyo Buturi

      Volume: 90 Issue: 5 Pages: 298-302

    • DOI

      10.11470/oubutsu.90.5_298

    • NAID

      130008034658

    • ISSN
      0369-8009, 2188-2290
    • Year and Date
      2021-05-05
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Origin of monochromatic electron emission from planar-type graphene/hexagonal boron nitride/n-type silicon electron emission devices2021

    • Author(s)
      Tomoya Igari, Masayoshi Nagao, Kazutaka Mitsuishi, Masahiro Sasaki, Yoichi Yamada and Katsuhisa Murakami
    • Journal Title

      Physical Review Applied

      Volume: 15 Issue: 1 Pages: 014044-014044

    • DOI

      10.1103/physrevapplied.15.014044

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] High-performance planar-type electron source based on a graphene-oxide-semiconductor structure2019

    • Author(s)
      Murakami Katsuhisa、Miyaji Joji、Furuya Ryo、Adachi Manabu、Nagao Masayoshi、Neo Yoichiro、Takao Yoshinori、Yamada Yoichi、Sasaki Masahiro、Mimura Hidenori
    • Journal Title

      Applied Physics Letters

      Volume: 114 Issue: 21 Pages: 213501-213501

    • DOI

      10.1063/1.5091585

    • NAID

      120007127634

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Highly Monochromatic Electron Emission from Graphene/Hexagonal Boron Nitride/Si Heterostructure2019

    • Author(s)
      Murakami Katsuhisa、Igari Tomoya、Mitsuishi Kazutaka、Nagao Masayoshi、Sasaki Masahiro、Yamada Yoichi
    • Journal Title

      ACS Applied Materials & Interfaces

      Volume: 12 Issue: 3 Pages: 4061-4067

    • DOI

      10.1021/acsami.9b17468

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 平面型グラフェン電子源の原子状酸素に対する耐性調査2022

    • Author(s)
      松本 直之, 鷹尾 祥典, 長尾 昌善, 村上 勝久
    • Organizer
      令和3年度 宇宙輸送シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] Oxygen Resistance Investigation of Graphene-Oxide-Semiconductor Planar-Type Electron Sources for Low Earth Orbit Applications2021

    • Author(s)
      Naoyuki Matsumoto, Yoshinori Takao, Masayoshi Nagao, and Katsuhisa Murakami
    • Organizer
      The 34th International Vacuum Nanoelectronics Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Planar type electron emission device using atomic layered materials and it applications2021

    • Author(s)
      Katsuhisa Murakami, Naoyuki Matsumoto, Yukino Kameda, Yoshinori Takao, Yoichiro Neo, Yoichi Yamada, Kazutaka Mitsuishi, Masahiro Sasaki, Hidenori Mimura, and Masayoshi Nagao
    • Organizer
      The 34th International Vacuum Nanoelectronics Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 平面型グラフェン電子源の地球低軌道応用に向けた原子状酸素耐性向上2021

    • Author(s)
      松本 直之, 鷹尾 祥典, 長尾 昌善, 村上 勝久
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Graphene/SiO2/n-Si積層構造からの高効率電子放出機構2021

    • Author(s)
      村上 勝久, 山田 洋一, 根尾 陽一郎, 鷹尾 祥典, 佐々木 正洋, 三村 秀典, 長尾 昌善
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Oxygen Resistance Enhancement of Graphene-Oxide-Semiconductor Planar-Type Electron Sources Using Hexagonal Boron Nitride2021

    • Author(s)
      Naoyuki Matsumoto, Yoshinori Takao, Masayoshi Nagao, and Katsuhisa Murakami
    • Organizer
      34th International Microprocesses and Nanotechnology Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 地球低軌道応用に向けた平面型グラフェン電子源の耐酸素コーティング2021

    • Author(s)
      松本 直之, 鷹尾 祥典, 長尾 昌善, 村上 勝久
    • Organizer
      電子デバイス研究会「電子管と真空ナノエレクトロニクス及びその評価技術 」
    • Related Report
      2021 Annual Research Report
  • [Presentation] Resistance Investigation of Graphene-Oxide-Semiconductor Planar-Type Electron Sources against Atomic Oxygen2021

    • Author(s)
      Naoyuki Matsumoto, Katsuhisa Murakami, Masayoshi Nagao, and Yoshinori Takao
    • Organizer
      The 10th Asian Joint Conference on Propulsion and Power
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 電位構造を反転した小型直流放電式イオンスラスタの作動特性2021

    • Author(s)
      森悠太朗, 鷹尾祥典
    • Organizer
      令和2年度 宇宙輸送シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] 六方晶窒化ホウ素による平面型グラフェン電子源の酸素耐性向上と特性評価2020

    • Author(s)
      松本直之, 村上勝久, 長尾昌善, 鷹尾祥典
    • Organizer
      第64回宇宙科学技術連合講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] Development of Low-Voltage-Driven Propellantless Cathodes with High-Current Density Based on Graphene-Oxide-Semiconductor Structure2019

    • Author(s)
      Ryo Furuya, Katsuhisa Murakami, Masayoshi Nagao, and Yoshinori Takao
    • Organizer
      36th International Electric Propulsion Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 小型イオンエンジン用Graphene/SiO2/Si積層型mA級平面電子源の開発2019

    • Author(s)
      古家 遼,村上 勝久,長尾 昌善,鷹尾 祥典
    • Organizer
      電子デバイス研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] 超小型直流放電式イオンスラスタの放電特性に対する放電室構造の影響2019

    • Author(s)
      森 悠太朗,鷹尾 祥典
    • Organizer
      第63回宇宙科学技術連合講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 低電圧駆動可能な小型中和器実現に向けたグラフェン/SiO2/Si積層型平面電子源の大電流化2019

    • Author(s)
      古家 遼,村上 勝久,長尾 昌善,鷹尾 祥典
    • Organizer
      第63回宇宙科学技術連合講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 超小型イオンエンジン用Graphene/SiO2/Si積層平面型電子源の大電流化2019

    • Author(s)
      古家 遼,村上 勝久,長尾 昌善,鷹尾 祥典
    • Organizer
      2019年 日本表面真空学会 学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 低真空・液体中でも動作する超高効率グラフェン平面電子源2019

    • Author(s)
      村上勝久
    • Organizer
      2019年Cupalシンポジウム、第16回 真空ナノエレクトロニクスシンポジウム
    • Related Report
      2018 Research-status Report
  • [Presentation] 超小型宇宙推進機が求めるイオン源と電子源2019

    • Author(s)
      鷹尾祥典
    • Organizer
      2019年Cupalシンポジウム、第16回 真空ナノエレクトロニクスシンポジウム
    • Related Report
      2018 Research-status Report
  • [Presentation] 小型イオンエンジン用平面型グラフェン電子源の電子電流特性評価2019

    • Author(s)
      古家遼, 村上勝久, 長尾昌善, 鷹尾祥典
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] Improvement of Electron Emission Efficiency of Graphene-Oxide-Semiconductor Planar-Type Electron Sources for Nanosatellite Neutralizers2018

    • Author(s)
      Ryo Furuya, Katsuhisa Murakami, Masayoshi Nagao, and Yoshinori Takao
    • Organizer
      31st International Vacuum Nanoelectronics Conference
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Graphene-oxide-semiconductor planar-type electron emission device and its applications2018

    • Author(s)
      Katsuhisa Murakami, Joji Miyaji, Ryo Furuya, Manabu Adachi, Masayoshi Nagao, Yoshihiro Nemoto, Masaki Takeguchi, Yoichiro Neo, Yoshinori Takao, Yoichi Yamada, Masahiro Sasaki, and Hidenori Mimura
    • Organizer
      31st International Vacuum Nanoelectronics Conference
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 平面型グラフェン電子源の放出効率向上と大電流化に向けた取り組み2018

    • Author(s)
      古家遼, 村上勝久, 長尾昌善, 鷹尾祥典
    • Organizer
      第62回宇宙科学技術連合講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] 平面型グラフェン電子源の放出電子電流向上2018

    • Author(s)
      古家遼, 村上勝久, 長尾昌善, 鷹尾祥典
    • Organizer
      平成30年度 宇宙輸送シンポジウム
    • Related Report
      2018 Research-status Report
  • [Remarks] Takao Lab

    • URL

      http://www.takao-lab.ynu.ac.jp/

    • Related Report
      2021 Annual Research Report 2019 Research-status Report 2018 Research-status Report
  • [Remarks]

    • URL

      http://www.takao-lab.ynu.ac.jp/

    • Related Report
      2020 Research-status Report

URL: 

Published: 2018-07-25   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi