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Direct imaging of catalytic process by differential phase contrast

Research Project

Project/Area Number 17K18974
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Research Field Materials engineering and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Ishikawa Ryo  東京大学, 大学院工学系研究科(工学部), 特任准教授 (20734156)

Project Period (FY) 2017-06-30 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords微分位相コントラスト法 / グラフェン / 原子電場 / 原子分解能電子顕微鏡法 / ドーパント / 化学結合 / 原子分解能電子顕微鏡 / 原子分解能 / 触媒反応 / 微分位相コントラスト
Outline of Final Research Achievements

We have successfully observed the atomistic electric fields of single carbon atoms in a monolayer graphene by using our segmented-type detector in the scanning transmission electron microscopy. We have also identified that the atomistic electric fields of single Si dopants in a monolayer graphene is strongly depending on the local symmetry at the located atomic sites. Since dangling bonds are formed at the graphene edge, electric fields are enhanced towards a vacuum that enables to capture cations at the graphene edge. On the basis of our direct observations of atomistic electric fields, we conclude that nano-scale atomistic defects play important roles to enhance the catalytic reactions.

Academic Significance and Societal Importance of the Research Achievements

触媒に代表される化学反応においては,材料中の局所的な原子配列に加え,電場あるいは電子密度分布の空間的な分布を観察する必要がある.平均情報として観察する手法は多く存在しているが,原子スケールでの電場・電荷密度分布を得る手法は確立されていないのが現状である.本研究により,グラフェン中の不純物原子や欠陥構造における電場構造の直接観察が可能となったことから,多岐に渡るナノテクノロジーの分野において様々な応用が期待される.

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (49 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (8 results) Journal Article (22 results) (of which Int'l Joint Research: 14 results,  Peer Reviewed: 22 results,  Open Access: 6 results) Presentation (19 results) (of which Int'l Joint Research: 10 results,  Invited: 8 results)

  • [Int'l Joint Research] モナッシュ大学(オーストラリア)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] モナッシュ大学/メルボルン大学(オーストラリア)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] ローレンスバークレー国立研究所(米国)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] ICMM-CSIC(スペイン)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] オークリッジ国立研究所(米国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] モナッシュ大学(オーストラリア)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] 北京大学/Institute of Physics/Wuhan Univ.(中国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] ダルムシュタット工科大学(ドイツ)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Phase relation between supercooled liquid and amorphous silicon2020

    • Author(s)
      J.T. Okada P.H.-L. Sit R. Ishikawa T. Ishikawa J. Chen K.S. Nakayama K. Maeda Y. Yokoyama Y. Watanabe P.-F. Paradis Y. Watanabe S. Nanao Y. Ikuhara K. Kimura S. Uda
    • Journal Title

      Applied Physics Letters

      Volume: 116 Issue: 9 Pages: 093705-093705

    • DOI

      10.1063/1.5129059

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Direct Measurement of Electronic Band Structures at Oxide Grain Boundaries2020

    • Author(s)
      Wei Jiake、Ogawa Takafumi、Feng Bin、Yokoi Tatsuya、Ishikawa Ryo、Kuwabara Akihide、Matsunaga Katsuyuki、Shibata Naoya、Ikuhara Yuichi
    • Journal Title

      Nano Letters

      Volume: - Issue: 4 Pages: 2530-2536

    • DOI

      10.1021/acs.nanolett.9b05298

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Direct Electric Field Imaging of Atomistic Graphene Defects2019

    • Author(s)
      ISHIKAWA Ryo、SHIBATA Naoya、IKUHARA Yuichi
    • Journal Title

      Nihon Kessho Gakkaishi

      Volume: 61 Issue: 4 Pages: 231-236

    • DOI

      10.5940/jcrsj.61.231

    • NAID

      130007761358

    • ISSN
      0369-4585, 1884-5576
    • Year and Date
      2019-12-15
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fast Li-ion conduction at grain boundaries in (La,Li)NbO3 polycrystals2019

    • Author(s)
      K. Kawahara, R. Ishikawa, K. Nakayama, T. Higashi, T. Kimura, Y. H. Ikuhara, N. Shibata, Y. Ikuhara
    • Journal Title

      Journal of Power Sources

      Volume: 441 Pages: 7-7

    • DOI

      10.1016/j.jpowsour.2019.227187

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Transition-Metal Distribution in Brownmillerite Ca2FeCoO52019

    • Author(s)
      K. Nakayama, R. Ishikawa, A. Kuwabara, S. Kobayashi, T. Motohashi, N. Shibata, Y. Ikuhara
    • Journal Title

      Inorganic Chemistry

      Volume: 58 Issue: 15 Pages: 10209-10216

    • DOI

      10.1021/acs.inorgchem.9b01356

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Single-source-precursor synthesis and high-temperature evolution of novel mesoporous SiVN(O)-based ceramic nanocomposites2019

    • Author(s)
      Zhou Cong、Ott Alexander、Ishikawa Ryo、Ikuhara Yuichi、Riedel Ralf、Ionescu Emanuel
    • Journal Title

      Journal of the European Ceramic Society

      Volume: - Issue: 16 Pages: 6280-6287

    • DOI

      10.1016/j.jeurceramsoc.2019.11.021

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Large angle illumination enabling accurate structure reconstruction from thick samples in scanning transmission electron microscopy2019

    • Author(s)
      H. G. Brown R. Ishikawa G. Sanchez-Santolino N. Shibata Y. Ikuhara L. J. Allen S. D. Findlay
    • Journal Title

      Ultramicroscopy

      Volume: 197 Pages: 112-121

    • DOI

      10.1016/j.ultramic.2018.12.010

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Anisotropic Atomic Electric Fields of Si Dopants in Monolayer Graphene2019

    • Author(s)
      R. Ishikawa S.D. Findlay T. Seki G. Sanchez-Santolino Y. Kohno Y. Ikuhara N. Shibata
    • Journal Title

      AMTC

      Volume: 6 Pages: 22-23

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Electron microscope control and image analysis by DigitalMicrograph2018

    • Author(s)
      石川亮 田中利空 柴田直哉 幾原雄一
    • Journal Title

      Materia Japan

      Volume: 57 Issue: 12 Pages: 584-588

    • DOI

      10.2320/materia.57.584

    • NAID

      130007538979

    • ISSN
      1340-2625, 1884-5843
    • Year and Date
      2018-12-01
    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Probing the Internal Atomic Charge Density Distributions in Real Space2018

    • Author(s)
      G. Sanchez-Santolino N. R. Lugg T. Seki R. Ishikawa S. D. Findlay Y. Kohno Y. Kanitani S. Tanaka S. Tomiya Y. Ikuhara N. Shibata
    • Journal Title

      ACS Nano

      Volume: 12 Issue: 9 Pages: 8875-8881

    • DOI

      10.1021/acsnano.8b03712

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Direct electric field imaging of graphene defects2018

    • Author(s)
      R. Ishikawa S. D. Findlay T. Seki G. Sanchez-Santolino Y. Kohno Y. Ikuhara N. Shibata
    • Journal Title

      Nature Communications

      Volume: 9 Issue: 1 Pages: 3878-3878

    • DOI

      10.1038/s41467-018-06387-8

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Picometer-scale atom position analysis in annular bright-field STEM imaging2018

    • Author(s)
      Gao Peng、Kumamoto Akihito、Ishikawa Ryo、Lugg Nathan、Shibata Naoya、Ikuhara Yuichi
    • Journal Title

      Ultramicroscopy

      Volume: 184 Pages: 177-187

    • DOI

      10.1016/j.ultramic.2017.09.001

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Attainment of 40.5 pm spatial resolution using 300 kV scanning transmission electron microscope equipped with fifth-order aberration corrector2018

    • Author(s)
      Morishita Shigeyuki, Ishikawa Ryo, Kohno Yuji, Sawada Hidetaka, Shibata Naoya, Ikuhara Yuichi
    • Journal Title

      Microscopy

      Volume: 122 Issue: 1 Pages: 46-50

    • DOI

      10.1093/jmicro/dfx122

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Single-source-precursor derived RGO/CNTs-SiCN ceramic nanocomposite with ultra-high electromagnetic shielding effectiveness2017

    • Author(s)
      Liu Xingmin、Yu Zhaoju、Ishikawa Ryo、Chen Lingqi、Liu Xiaofei、Yin Xiaowei、Ikuhara Yuichi、Riedel Ralf
    • Journal Title

      Acta Materialia

      Volume: 130 Pages: 83-93

    • DOI

      10.1016/j.actamat.2017.03.031

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Electric field imaging of single atoms2017

    • Author(s)
      Shibata Naoya、Seki Takehito、Sanchez-Santolino Gabriel、Findlay Scott D.、Kohno Yuji、Matsumoto Takao、Ishikawa Ryo、Ikuhara Yuichi
    • Journal Title

      Nature Communications

      Volume: 8 Issue: 1 Pages: 15631-15631

    • DOI

      10.1038/ncomms15631

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Relative Li-ion mobility mapping in Li 0.33 La 0.56 TiO 3 polycrystalline by electron backscatter diffraction and electrochemical strain microscopy2017

    • Author(s)
      Sasano Shun, Ishikawa Ryo, Sugiyama Issei, Higashi Takuma, Kimura Teiichi, Ikuhara Yumi H., Shibata Naoya, Ikuhara Yuichi
    • Journal Title

      Applied Physics Express

      Volume: 10 Pages: 061102-061102

    • NAID

      210000135867

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Possible Absence of Critical Thickness and Size Effect in Ultrathin Perovskite Ferroelectric Films2017

    • Author(s)
      P. Gao, Z. Zhang, M. Li, R. Ishikawa, B. Feng, H.-J, Liu, Y.-L. Huang, N. Shibata, X. Ma, S. Chen, J. Zhang, K. Liu, E.-G. Wang, D. Yu, L. Liao, Y. -H. Chu, Y. Ikuhara
    • Journal Title

      Nature Communications

      Volume: 印刷中 Issue: 1 Pages: 15549-15549

    • DOI

      10.1038/ncomms15549

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Full picture discovery for mixed-fluorine anion effects on high-voltage spinel lithium nickel manganese oxide cathodes2017

    • Author(s)
      Kim Dae-wook、Shiiba Hiromasa、Zettsu Nobuyuki、Yamada Tetsuya、Kimijima Takeshi、S?nchez-Santolino Gabriel、Ishikawa Ryo、Ikuhara Yuichi、Teshima Katsuya
    • Journal Title

      NPG Asia Materials

      Volume: 9 Issue: 7 Pages: e398-e398

    • DOI

      10.1038/am.2017.90

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Single-source-precursor synthesis and electromagnetic properties of novel RGO?SiCN ceramic nanocomposites2017

    • Author(s)
      Liu Xingmin、Yu Zhaoju、Ishikawa Ryo、Chen Lingqi、Yin Xiaowei、Ikuhara Yuichi、Riedel Ralf
    • Journal Title

      Journal of Materials Chemistry C

      Volume: 5 Issue: 31 Pages: 7950-7960

    • DOI

      10.1039/c7tc00395a

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Room-temperature dilute ferromagnetic dislocations in Sr1-xMnxTiO3-delta2017

    • Author(s)
      Ishikawa Ryo, Shimbo YOichi, Sugiyama Issei, Lugg Nathan R., Shibata Naoya, Ikuhara Yuichi
    • Journal Title

      Physical Review B

      Volume: 96 Issue: 2 Pages: 024440-024440

    • DOI

      10.1103/physrevb.96.024440

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Single-atom dynamics in scanning transmission electron microscopy2017

    • Author(s)
      Mishra Rohan、Ishikawa Ryo、Lupini Andrew R.、Pennycook Stephen J.
    • Journal Title

      MRS Bulletin

      Volume: 42 Issue: 09 Pages: 644-652

    • DOI

      10.1557/mrs.2017.187

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Quantitative electric field mapping in thin specimens using a segmented detector: Revisiting the transfer function for differential phase contrast2017

    • Author(s)
      Seki Takehito、Sanchez-Santolino Gabriel、Ishikawa Ryo、Findlay Scott D.、Ikuhara Yuichi、Shibata Naoya
    • Journal Title

      Ultramicroscopy

      Volume: 182 Pages: 258-263

    • DOI

      10.1016/j.ultramic.2017.07.013

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 原子分解能電子顕微鏡によるセラミックス材料の構造解析2019

    • Author(s)
      石川 亮
    • Organizer
      2019年度エンジニアリングセラミックス若手セミナー
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] グラフェン欠陥における電場構造解析2019

    • Author(s)
      石川 亮 Findlay Scott 関 岳人 Sanchez-Santolino Gabriel 河野 祐二 幾原 雄一 柴田 直哉
    • Organizer
      日本金属学会165回講演大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] グラフェン欠陥における原子分解能電場解析2019

    • Author(s)
      石川 亮 Findlay Scott 関 岳人 Sanchez-Santolino Gabriel 河野 祐二 幾原 雄一 柴田 直哉
    • Organizer
      日本セラミックス協会 2019年 年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Anisotropic Atomic Electric Fields of Si Dopants in Monolayer Graphene2019

    • Author(s)
      R. Ishikawa S.D. Findlay T. Seki G. Sanchez-Santolino Y. Kohno Y. Ikuhara N. Shibata
    • Organizer
      AMTC6
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Direct Electric field imaging of atomistic defects in graphene2019

    • Author(s)
      R. Ishikawa S.D. Findlay T. Seki G. Sanchez-Santolino Y. Kohno Y. Ikuhara N. Shibata
    • Organizer
      FEMMS2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electric field imaging of atomistic defects in graphene2019

    • Author(s)
      R. Ishikawa S. Findlay T. Seki G. Sanchez-Santolino Y. Kohno Y. Ikuhara N. Shibata
    • Organizer
      International Workshop of Ultra High-Resolution on Microscopy 2019
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] グラフェン欠陥における原子分解能電場解析2019

    • Author(s)
      石川亮 S. Findlay 関岳人 G. Sanchez-Santolino 河野祐二 幾原雄一 柴田直哉
    • Organizer
      日本セラミックス協会 2019年 年会
    • Related Report
      2018 Research-status Report
  • [Presentation] 先端電子顕微鏡法による材料の局所構造解析2019

    • Author(s)
      石川亮
    • Organizer
      第2回情報計測インフォマティクス
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Advanced electron microscopy for spinel related materials2018

    • Author(s)
      R. Ishikawa
    • Organizer
      9th International Workshop on Spinel Nitrides and Related Materials
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Surface and Electric Field Imaging by Newly Designed Atomic-Resolution STEM2018

    • Author(s)
      R. Ishikawa N. Shibata Y. Ikuhara
    • Organizer
      Microscopy & Microanalysis 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] グラフェン欠陥における原子分解能電場観察2018

    • Author(s)
      石川亮 S. Findlay 関岳人 G. Sanchez-Santolino 河野祐二 幾原雄一 柴田直哉
    • Organizer
      日本顕微鏡学会第74回学術講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] Three-Dimensional Point Defect Analysis by Large-angle Illumination STEM2017

    • Author(s)
      Ishikawa Ryo, Pennycook S.J., Lupini A.R., Findlay S.D., Shibata Naoya, Ikuhara Yuichi
    • Organizer
      日本顕微鏡学会
    • Related Report
      2017 Research-status Report
  • [Presentation] Grain boundary atomic structure and lithium ionic conductivity in (La,Li)TiO3 solid state electrolyte2017

    • Author(s)
      Ishikawa Ryo, Sasano Shun, Higashi Takuma, Kimura Teiichi, Ikuhara Yumi, Shibata Naoya, Ikuhara Yuichi
    • Organizer
      12th Pacific Rim Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Three-Dimensional Point Defect Imaging by Large-angle Illumination STEM2017

    • Author(s)
      Ishikawa Ryo, Pennycook S.J., Lupini A.R., Findlay S.D., Shibata Naoya, Ikuhara Yuichi
    • Organizer
      Microscopy and Microanalysis 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] The local structure and chemistry in solid state electrolytes2017

    • Author(s)
      Ishikawa Ryo, Higashi Takuma, Sasano Shun, Kimura Teiichi, Ikuhara Yumi, Shibata Naoya, Ikuhara Yuichi
    • Organizer
      The 15th International Conference on Advanced Materials
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Atomic Structures of Luminescent Centres in Nitrides2017

    • Author(s)
      Ishikawa Ryo, Taniguchi Takashi, Norimasa Nishiyama, Ikuhara Yuichi
    • Organizer
      ISNT 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 原子分解能顕微鏡法を用いたセラミックス材料解析2017

    • Author(s)
      石川亮
    • Organizer
      124委員会 第153回研究会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Atomic structures of dislocation and surface in oxide materials2017

    • Author(s)
      Ishikawa Ryo, Shibata Naoya, Ikuhara Yuichi
    • Organizer
      The 3rd East-Asia Microscopy Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 原子分解能STEM 法を用いた点欠陥構造解析の新展開2017

    • Author(s)
      石川亮
    • Organizer
      第12回日本フラックス成長研究発表会
    • Related Report
      2017 Research-status Report
    • Invited

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Published: 2017-07-21   Modified: 2022-02-21  

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