World's Best Scientists 2026 revealed!
Kikuo Okuyama

Kikuo Okuyama

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Materials Science
Japan
2022

D-Index & Metrics

Materials Science

D-Index
85
Citations
26259
World Ranking
2160
National Ranking
89

Kikuo Okuyama 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 Kikuo Okuyama 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: 602 publications — 92nd percentile

92% of scientists in this discipline score the same or lower.

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

Kikuo Okuyama 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 Kikuo Okuyama 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: 85 D-Index — 84th percentile

84% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2022 - Research.com Materials Science in Japan Leader Award

Overview

Kikuo Okuyama is affiliated with Hiroshima University in Japan. Their research intersects multiple fields, focusing particularly on materials chemistry, water science and technology, atmospheric science, renewable energy and sustainability, and electrical and electronic engineering.

The scientist's recent publications cover a range of topics related to catalytic processes, nanoparticle behavior, and magnetic properties. Notable papers include:

  • Advanced aerosol technologies towards structure and morphologically controlled next-generation catalytic materials (2020), Journal of Aerosol Science
  • Hydrogenation Synthesis of Sub-stoichiometric Tungsten Oxide (WOX) Nanoparticles and Its Superior Decompose Rhodamine B Behavior (2024), Catalysis Letters
  • Enhanced magnetic performance of aligned wires assembled from nanoparticles: from nanoscale to macroscale (2020), Royal Society Open Science
  • Editor's Preface (2020), KONA Powder and Particle Journal
  • In Memoriam of Professor Hitoshi Emi (2020), Aerosol and Air Quality Research

Frequent co-authors associated with their work include Takashi Ogi, Yoshio Ōtani, Takafumi Seto, Leon Gradoń, and Ratna Balgis.

The primary publication venues for their research are:

  • KONA Powder and Particle Journal
  • Journal of Aerosol Science
  • Catalysis Letters
  • Royal Society Open Science
  • Aerosol and Air Quality Research

Their investigations address several main research topics, including:

  • Catalytic processes in materials science
  • Coagulation and flocculation studies
  • Nanoparticles nucleation surface interactions
  • Advanced photocatalysis techniques
  • Gas sensing nanomaterials and sensors
  • Transition metal oxide nanomaterials
  • Magnetic properties of thin films

Best Publications

  • Progress in developing spray-drying methods for the production of controlled morphology particles: From the nanometer to submicrometer size ranges

    Asep Bayu Dani Nandiyanto;Kikuo Okuyama

  • Preparation of nanoparticles via spray route

    Kikuo Okuyama;I. Wuled Lenggoro

  • Correlation between particle size/domain structure and magnetic properties of highly crystalline Fe3O4 nanoparticles

    Qing Li;Christina W. Kartikowati;Shinji Horie;Takashi Ogi

  • Correlations between Crystallite/Particle Size and Photoluminescence Properties of Submicrometer Phosphors

    Wei-Ning Wang;W. Widiyastuti;Takashi Ogi;I. Wuled Lenggoro

  • Synthesis of spherical mesoporous silica nanoparticles with nanometer-size controllable pores and outer diameters

    Asep Bayu Dani Nandiyanto;Soon-Gil Kim;Ferry Iskandar;Kikuo Okuyama

  • Control of the morphology of nanostructured particles prepared by the spray drying of a nanoparticle sol

    Ferry Iskandar;Leon Gradon;Kikuo Okuyama

  • Nanoparticle filtration by electrospun polymer fibers

    Ki Myoung Yun;Christopher J. Hogan;Yasuko Matsubayashi;Masaaki Kawabe

  • YAG:Ce phosphor particles prepared by ultrasonic spray pyrolysis

    Yun Chan Kang;I.Wuled Lenggoro;Seung Bin Park;Kikuo Okuyama

  • Crystal structures of α and β forms of poly(tetramethylene succinate)

    Y Ichikawa;H Kondo;Y Igarashi;K Noguchi

  • Enhanced Photocatalytic Performance of Brookite TiO2 Macroporous Particles Prepared by Spray Drying with Colloidal Templating

    Ferry Iskandar;Asep Bayu Dani Nandiyanto;Ki Myoung Yun;Christopher Joseph Hogan

  • Role of C–N Configurations in the Photoluminescence of Graphene Quantum Dots Synthesized by a Hydrothermal Route

    Fitri Aulia Permatasari;Akfiny Hasdi Aimon;Ferry Iskandar;Takashi Ogi

  • Production of ultrafine metal oxide aerosol particles by thermal decomposition of metal alkoxide vapors

    Kikuo Okuyama;Yasuo Kousaka;Noboru Tohge;Satoru Yamamoto

  • Novel Route to Nanoparticle Synthesis by Salt-Assisted Aerosol Decomposition

    B. Xia;I. W. Lenggoro;K. Okuyama

  • Preparation of functional nanostructured particles by spray drying

    Kikuo Okuyama;Mikrajuddin Abdullah;I. Wuled Lenggoro;Ferry Iskandar

  • Experimental investigation of nanoparticle dispersion by beads milling with centrifugal bead separation

    Mitsugi Inkyo;Takashi Tahara;Toru Iwaki;Ferry Iskandar

  • An experimental and modeling investigation of particle production by spray pyrolysis using a laminar flow aerosol reactor

    I. Wuled Lenggoro;Takeshi Hata;Ferry Iskandar;Melissa M. Lunden

  • In situ production of spherical silica particles containing self-organized mesopores

    Ferry Iskandar;Mikrajuddin;Kikuo Okuyama

  • Preparation of ZnS Nanoparticles by Electrospray Pyrolysis

    I.Wuled Lenggoro;Kikuo Okuyama;Juan Fernández de la Mora;Noboru Tohge

  • Gd2O3:Eu phosphor particles with sphericity, submicron size and non-aggregation characteristics

    Y.C. Kang;S.B. Park;I.W. Lenggoro;K. Okuyama

  • Investigation on the Correlations between Droplet and Particle Size Distribution in Ultrasonic Spray Pyrolysis

    † Wei-Ning Wang;Agus Purwanto;I. Wuled Lenggoro;Kikuo Okuyama

  • Binary nucleation in acid–water systems. II. Sulfuric acid–water and a comparison with methanesulfonic acid–water

    B. E. Wyslouzil;J. H. Seinfeld;R. C. Flagan;K. Okuyama

Frequent Co-Authors

Takashi Ogi
Takashi Ogi Hiroshima University
Ferry Iskandar
Ferry Iskandar Bandung Institute of Technology
I. Wuled Lenggoro
I. Wuled Lenggoro Tokyo University of Agriculture and Technology
Wei-Ning Wang
Wei-Ning Wang Virginia Commonwealth University
John H. Seinfeld
John H. Seinfeld California Institute of Technology
Frank G. Shi
Frank G. Shi University of California, Irvine
Yun Chan Kang
Yun Chan Kang Korea University
Richard C. Flagan
Richard C. Flagan California Institute of Technology
Mansoo Choi
Mansoo Choi Seoul National University

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