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D-Index & Metrics

Materials Science

D-Index
41
Citations
26701
World Ranking
12638
National Ranking
797

Ryoji Asahi publication distribution in Materials Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Materials Science in 2026. The highlighted bar marks where Ryoji Asahi sits on this spectrum.

50–69 publications: 28 scientists 70–89 publications: 152 scientists 90–109 publications: 356 scientists 110–129 publications: 487 scientists 130–149 publications: 723 scientists 150–169 publications: 835 scientists 170–189 publications: 850 scientists 190–209 publications: 891 scientists 210–229 publications: 862 scientists 230–249 publications: 766 scientists 250–269 publications: 726 scientists 270–289 publications: 665 scientists 290–309 publications: 593 scientists 310–329 publications: 537 scientists 330–349 publications: 477 scientists 350–369 publications: 440 scientists 370–389 publications: 356 scientists 390–409 publications: 321 scientists 410–429 publications: 256 scientists 430–449 publications: 246 scientists 450–469 publications: 216 scientists 470–489 publications: 212 scientists 490–509 publications: 174 scientists 510–529 publications: 194 scientists 530–549 publications: 162 scientists 550–569 publications: 131 scientists 570–589 publications: 111 scientists 590–609 publications: 103 scientists 610–629 publications: 99 scientists 630–649 publications: 77 scientists 650–669 publications: 92 scientists 670–689 publications: 56 scientists 690–709 publications: 53 scientists 710–729 publications: 53 scientists 730–749 publications: 38 scientists 750–769 publications: 52 scientists 770–789 publications: 43 scientists 790–809 publications: 38 scientists 810–829 publications: 34 scientists 830–849 publications: 25 scientists 850–869 publications: 18 scientists 870–889 publications: 20 scientists 890–909 publications: 24 scientists 910–929 publications: 27 scientists 930–949 publications: 20 scientists 950–969 publications: 17 scientists 970–989 publications: 10 scientists 990–1,009 publications: 16 scientists 1,010–1,029 publications: 13 scientists 1,030–1,049 publications: 12 scientists 1,050–1,069 publications: 9 scientists 1,070–1,089 publications: 8 scientists 1,090–1,109 publications: 7 scientists 1,110–1,129 publications: 9 scientists 1,130–1,149 publications: 2 scientists 1,150–1,162 publications: 5 scientists 1,163+ publications: 100 scientists
50 publications 1,163+

This scientist: 183 publications — 25th percentile

25% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,163 publications or more.

Ryoji Asahi D-index placement in Materials Science in 2026

The chart shows the D-index (discipline H-index) distribution of Materials Science scientists ranked by Research.com in 2026. The highlighted bar marks where Ryoji Asahi sits on this spectrum.

40–41 D-Index: 211 scientists 42–43 D-Index: 450 scientists 44–45 D-Index: 612 scientists 46–47 D-Index: 612 scientists 48–49 D-Index: 598 scientists 50–51 D-Index: 657 scientists 52–53 D-Index: 667 scientists 54–55 D-Index: 621 scientists 56–57 D-Index: 597 scientists 58–59 D-Index: 610 scientists 60–61 D-Index: 587 scientists 62–63 D-Index: 606 scientists 64–65 D-Index: 533 scientists 66–67 D-Index: 490 scientists 68–69 D-Index: 469 scientists 70–71 D-Index: 378 scientists 72–73 D-Index: 421 scientists 74–75 D-Index: 359 scientists 76–77 D-Index: 323 scientists 78–79 D-Index: 299 scientists 80–81 D-Index: 230 scientists 82–83 D-Index: 210 scientists 84–85 D-Index: 195 scientists 86–87 D-Index: 203 scientists 88–89 D-Index: 175 scientists 90–91 D-Index: 175 scientists 92–93 D-Index: 142 scientists 94–95 D-Index: 121 scientists 96–97 D-Index: 117 scientists 98–99 D-Index: 107 scientists 100–101 D-Index: 88 scientists 102–103 D-Index: 85 scientists 104–105 D-Index: 68 scientists 106–107 D-Index: 62 scientists 108–109 D-Index: 57 scientists 110–111 D-Index: 45 scientists 112–113 D-Index: 49 scientists 114–115 D-Index: 50 scientists 116–117 D-Index: 34 scientists 118–119 D-Index: 38 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 29 scientists 124–125 D-Index: 28 scientists 126–127 D-Index: 24 scientists 128–129 D-Index: 33 scientists 130–131 D-Index: 28 scientists 132–133 D-Index: 21 scientists 134–135 D-Index: 20 scientists 136–137 D-Index: 23 scientists 138–139 D-Index: 17 scientists 140–141 D-Index: 12 scientists 142–143 D-Index: 17 scientists 144–145 D-Index: 21 scientists 146–147 D-Index: 13 scientists 148–149 D-Index: 11 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 13 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 4 scientists 162–163 D-Index: 4 scientists 164 D-Index: 3 scientists 165+ D-Index: 98 scientists
40 D-Index 165+

This scientist: 41 D-Index — 2nd percentile

2% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 165 D-Index or more.

Overview

Ryoji Asahi is a researcher affiliated with Toyota Motor Corporation in Japan. Their work focuses primarily on materials science and engineering, with a significant emphasis on materials chemistry and electrical and electronic engineering.

The scientist's research spans multiple interconnected subfields including:

  • Materials Chemistry
  • Electrical and Electronic Engineering
  • Inorganic Chemistry
  • Electronic, Optical and Magnetic Materials
  • Artificial Intelligence

They have contributed to research on various scientific topics such as:

  • Machine Learning in Materials Science
  • Electronic and Structural Properties of Oxides
  • Ferroelectric and Piezoelectric Materials
  • Advanced Battery Materials and Technologies
  • X-ray Diffraction in Crystallography
  • Advancements in Battery Materials
  • Inorganic Fluorides and Related Compounds

Their publication record includes recent papers delivered in well-known scientific journals and venues, as follows:

  • "Descriptors representing two- and three-body atomic distributions and their effects on the accuracy of machine-learned inter-atomic potentials," 2020, The Journal of Chemical Physics
  • "On-the-Fly Active Learning of Interatomic Potentials for Large-Scale Atomistic Simulations," 2020, The Journal of Physical Chemistry Letters
  • "Transfer learning for materials informatics using crystal graph convolutional neural network," 2021, Computational Materials Science
  • "Molecular dynamics simulations of lithium superionic conductor Li10GeP2S12 using a machine learning potential," 2021, Solid State Ionics
  • "Discovery of superionic conductors by ensemble-scope descriptor," 2020, NPG Asia Materials

Asahi frequently publishes in several established venues, including:

  • arXiv (Cornell University)
  • Scientific Reports
  • Solid State Ionics
  • Chemistry of Materials
  • Inorganic Chemistry

Their collaborative work is reflected through repeated coauthorship with several researchers, notably:

  • Alex Kutana
  • Joohwi Lee
  • Ryosuke Jinnouchi
  • Nobuko Ohba
  • Tsuyoshi Takami

Best Publications

  • Visible-Light Photocatalysis in Nitrogen-Doped Titanium Oxides

    R. Asahi;T. Morikawa;T. Ohwaki;K. Aoki

  • Nitrogen-doped titanium dioxide as visible-light-sensitive photocatalyst: designs, developments, and prospects.

    Ryoji Asahi;Takeshi Morikawa;Hiroshi Irie;Takeshi Ohwaki

  • Optically tunable amino-functionalized graphene quantum dots

    Hiroyuki Tetsuka;Ryoji Asahi;Akihiro Nagoya;Kazuo Okamoto

  • Electronic and optical properties of anatase TiO 2

    R. Asahi;Y. Taga;W. Mannstadt;A. J. Freeman

  • Band-Gap Narrowing of Titanium Dioxide by Nitrogen Doping

    Takeshi Morikawa;Ryoji Asahi;Takeshi Ohwaki;Koyu Aoki

  • Electronic structure and physical properties of early transition metal mononitrides: Density-functional theory LDA, GGA, and screened-exchange LDA FLAPW calculations

    C. Stampfl;W. Mannstadt;W. Mannstadt;R. Asahi;R. Asahi;Arthur J Freeman

  • Cu 2 ZnSnS 4 as a potential photovoltaic material: A hybrid Hartree-Fock density functional theory study

    Joachim Paier;Ryoji Asahi;Akihiro Nagoya;Georg Kresse

  • Defect formation and phase stability of Cu 2 ZnSnS 4 photovoltaic material

    Akihiro Nagoya;Ryoji Asahi;Roman Wahl;Georg Kresse

  • Nitrogen complex species and its chemical nature in TiO2 for visible-light sensitized photocatalysis

    Ryoji Asahi;Takeshi Morikawa

  • Predicting Catalytic Activity of Nanoparticles by a DFT-Aided Machine-Learning Algorithm

    Ryosuke Jinnouchi;Ryoji Asahi

  • Descriptors representing two- and three-body atomic distributions and their effects on the accuracy of machine-learned inter-atomic potentials.

    Ryosuke Jinnouchi;Ferenc Karsai;Carla Verdi;Ryoji Asahi

  • Electronic structure and small polaron hole transport of copper aluminate

    B. J. Ingram;T. O. Mason;R. Asahi;K. T. Park

  • Effect of GGA on the half-metallicity of the itinerant ferromagnet CoS 2

    Tatsuya Shishidou;Arthur J Freeman;Ryoji Asahi

  • Microstructure recognition using convolutional neural networks for prediction of ionic conductivity in ceramics

    Ruho Kondo;Shunsuke Yamakawa;Yumi Masuoka;Shin Tajima

  • Optical properties and electronic structures of semiconductors with screened-exchange lda

    R. Asahi;W. Mannstadt;Arthur J Freeman

  • On-the-Fly Active Learning of Interatomic Potentials for Large-Scale Atomistic Simulations

    Ryosuke Jinnouchi;Kazutoshi Miwa;Ferenc Karsai;Georg Kresse

  • Indium-cadmium-oxide films having exceptional electrical conductivity and optical transparency: Clues for optimizing transparent conductors

    A. Wang;J. R. Babcock;N. L. Edleman;A. W. Metz

  • Photocatalytic material, photocatalyst, photocatalytic article, and method for the preparation thereof

    Morikawa Takeshi;Asahi Ryoji;Ohwaki Takeshi;Taga Yasunori

  • Properties of the gold oxides Au 2 O 3 and Au 2 O : First-principles investigation

    Hongqing Shi;Ryoji Asahi;Catherine Stampfl

  • First-principles study of Cu2ZnSnS4 and the related band offsets for photovoltaic applications.

    A Nagoya;R Asahi;G Kresse

  • Electronic structure of misfit-layered calcium cobaltite

    Ryoji Asahi;Jun Sugiyama;Toshihiko Tani

  • Computational band-structure engineering of III–V semiconductor alloys

    Clint B. Geller;Walter Wolf;Silvia Picozzi;Alessandra Continenza

  • What Makes the Photocatalytic CO2 Reduction on N-Doped Ta2O5 Efficient: Insights from Nonadiabatic Molecular Dynamics.

    Alexey V. Akimov;Ryoji Asahi;Ryosuke Jinnouchi;Oleg V. Prezhdo

  • Band-Gap Narrowing of Titanium Dioxide by Nitrogen Doping : Optical Properties of Condensed Matter

    Takeshi Morikawa;Ryoji Asahi;Takeshi Ohwaki;Koyu Aoki

Frequent Co-Authors

Arthur J Freeman
Arthur J Freeman Northwestern University
Uichiro Mizutani
Uichiro Mizutani Toyota Motor Corporation (Japan)
Yasunori Taga
Yasunori Taga Chubu University
Silvia Picozzi
Silvia Picozzi Consiglio Nazionale delle Ricerche - CNR
Georg Kresse
Georg Kresse University of Vienna
Oleg V. Prezhdo
Oleg V. Prezhdo University of Southern California
David N. Seidman
David N. Seidman Northwestern University
Catherine Stampfl
Catherine Stampfl University of Sydney
Jürgen Hafner
Jürgen Hafner University of Vienna
Carl R. Kannewurf
Carl R. Kannewurf Northwestern University

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