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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Materials Science 52 9628 9297 574 548 243 8937

Toshiya Okazaki publications per year

The chart shows the history of publications by Toshiya Okazaki between 1995 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Toshiya Okazaki published across 31 years, from 1995 to 2025, averaging 9.6 papers a year. Output peaked at 22 publications in 2019. 27 of the 297 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1995 to 2025. Vertical axis: number of publications, 0 to 22. Peak 22 publications in 2019. 1995: 1 publication 1996: 2 publications 1997: 1 publication 1998: 0 publications 1999: 5 publications 2000: 3 publications 2001: 8 publications 2002: 9 publications 2003: 11 publications 2004: 11 publications 2005: 13 publications 2006: 11 publications 2007: 7 publications 2008: 7 publications 2009: 8 publications 2010: 12 publications 2011: 7 publications 2012: 9 publications 2013: 8 publications 2014: 11 publications 2015: 5 publications 2016: 16 publications 2017: 11 publications 2018: 11 publications 2019: 22 publications 2020: 11 publications 2021: 18 publications 2022: 14 publications 2023: 18 publications 2024: 10 publications 2025: 17 publications
1995 2025

297 publications in total across all disciplines

View publications per year as a table
Toshiya Okazaki: publications per year, 1995 to 2025
Year Publications
1995 1
1996 2
1997 1
1998 0
1999 5
2000 3
2001 8
2002 9
2003 11
2004 11
2005 13
2006 11
2007 7
2008 7
2009 8
2010 12
2011 7
2012 9
2013 8
2014 11
2015 5
2016 16
2017 11
2018 11
2019 22
2020 11
2021 18
2022 14
2023 18
2024 10
2025 17
Total 297
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Toshiya Okazaki 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 Toshiya Okazaki sits on this spectrum.

No. of scientists
200 400 600 800
Bar chart with 57 bars. Horizontal axis: publications, 50–69 to 1,163+. Vertical axis: number of scientists, 0 to 891. Most scientists, 891, have 190–209 publications. The last bar groups every scientist with 1,163 publications or more. The highlighted bar, 230–249 publications, is where this scientist sits. 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
50–69 publications 1,163+

This scientist: 243 publications — 44th percentile

44% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Materials Science scientists by publication count, Research.com 2026 ranking edition. Based on 12,847 ranked scientists.
Publications Scientists This scientist
50–69 28
70–89 152
90–109 356
110–129 487
130–149 723
150–169 835
170–189 850
190–209 891
210–229 862
230–249 766 243
250–269 726
270–289 665
290–309 593
310–329 537
330–349 477
350–369 440
370–389 356
390–409 321
410–429 256
430–449 246
450–469 216
470–489 212
490–509 174
510–529 194
530–549 162
550–569 131
570–589 111
590–609 103
610–629 99
630–649 77
650–669 92
670–689 56
690–709 53
710–729 53
730–749 38
750–769 52
770–789 43
790–809 38
810–829 34
830–849 25
850–869 18
870–889 20
890–909 24
910–929 27
930–949 20
950–969 17
970–989 10
990–1,009 16
1,010–1,029 13
1,030–1,049 12
1,050–1,069 9
1,070–1,089 8
1,090–1,109 7
1,110–1,129 9
1,130–1,149 2
1,150–1,162 5
1,163+ 100
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Toshiya Okazaki 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 Toshiya Okazaki sits on this spectrum.

No. of scientists
200 400 600
Bar chart with 64 bars. Horizontal axis: D-Index, 40–41 to 165+. Vertical axis: number of scientists, 0 to 667. Most scientists, 667, have 52–53 D-Index. The last bar groups every scientist with 165 D-Index or more. The highlighted bar, 52–53 D-Index, is where this scientist sits. 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
40–41 D-Index 165+

This scientist: 52 D-Index — 27th percentile

27% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Materials Science scientists by D-index, Research.com 2026 ranking edition. Based on 12,847 ranked scientists.
D-Index Scientists This scientist
40–41 211
42–43 450
44–45 612
46–47 612
48–49 598
50–51 657
52–53 667 52
54–55 621
56–57 597
58–59 610
60–61 587
62–63 606
64–65 533
66–67 490
68–69 469
70–71 378
72–73 421
74–75 359
76–77 323
78–79 299
80–81 230
82–83 210
84–85 195
86–87 203
88–89 175
90–91 175
92–93 142
94–95 121
96–97 117
98–99 107
100–101 88
102–103 85
104–105 68
106–107 62
108–109 57
110–111 45
112–113 49
114–115 50
116–117 34
118–119 38
120–121 37
122–123 29
124–125 28
126–127 24
128–129 33
130–131 28
132–133 21
134–135 20
136–137 23
138–139 17
140–141 12
142–143 17
144–145 21
146–147 13
148–149 11
150–151 14
152–153 13
154–155 9
156–157 10
158–159 7
160–161 4
162–163 4
164 3
165+ 98
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Overview

Toshiya Okazaki is affiliated with the National Institute of Advanced Industrial Science and Technology in Japan. Their research primarily spans the fields of Materials Science and Engineering, with significant contributions focusing on Materials Chemistry and various engineering subfields.

Their work covers several subfields including Biomedical Engineering, Biomaterials, Polymers and Plastics, as well as Electrical and Electronic Engineering. The main topics they have explored include Carbon Nanotubes in Composites, Graphene research and applications, Advanced Cellulose Research Studies, and the use of Machine Learning in Materials Science. Additional focus areas include Graphene and Nanomaterials Applications, Conducting polymers and applications, and Thermal properties of materials.

Among recent papers authored or co-authored by Okazaki are:

  • Improved thermal stability of silicone rubber nanocomposites with low filler content, achieved by well-dispersed carbon nanotubes (2020, Composites Communications)
  • Vertically aligned growth of small-diameter single-walled carbon nanotubes by alcohol catalytic chemical vapor deposition with Ir catalyst (2020, Applied Surface Science)
  • New evaluation method for the curing degree of rubber and its nanocomposites using ATR-FTIR spectroscopy (2020, Polymer Testing)
  • Annealing-induced enhancement of electrical conductivity and electromagnetic interference shielding in injection-molded CNT polymer composites (2022, Polymer)
  • Dispersions of High-Quality Carbon Nanotubes with Narrow Aggregate Size Distributions by Viscous Liquid for Conducting Polymer Composites (2020, ACS Applied Nano Materials)

Okazaki frequently collaborates with other researchers, with notable co-authors including Kazufumi Kobashi, H. Nakajima, Yoko Iizumi, Shun Muroga, and Takahiro Morimoto. These collaborations reflect sustained teamwork in the development and characterization of advanced composite materials and nanotube technologies.

The scientist has published extensively in a variety of venues. The leading platforms for their research dissemination include ECS Meeting Abstracts, SSRN Electronic Journal, Carbon, ACS Applied Nano Materials, and The Journal of Physical Chemistry C.

Best Publications

  • One-dimensional metallofullerene crystal generated inside single-walled carbon nanotubes.

    K. Hirahara;K. Suenaga;S. Bandow;H. Kato

  • Selectivity of water-soluble proteins in single-walled carbon nanotube dispersions

    Koji Matsuura;Takeshi Saito;Toshiya Okazaki;Satoshi Ohshima

  • New Synthesis of High-Quality Double-Walled Carbon Nanotubes by High-Temperature Pulsed Arc Discharge

    Toshiki Sugai;Hiromichi Yoshida;Takashi Shimada;Toshiya Okazaki

  • Selective diameter control of single-walled carbon nanotubes in the gas-phase synthesis.

    Takeshi Saito;Satoshi Ohshima;Toshiya Okazaki;Shigekazu Ohmori

  • Mixed low-dimensional nanomaterial: 2D ultranarrow MoS2 inorganic nanoribbons encapsulated in quasi-1D carbon nanotubes.

    Zhiyong Wang;Hong Li;Zheng Liu;Zujin Shi

  • Electron diffraction study of one-dimensional crystals of fullerenes

    K. Hirahara;S. Bandow;K. Suenaga;H. Kato

  • Visualizing and identifying single atoms using electron energy-loss spectroscopy with low accelerating voltage.

    Kazu Suenaga;Yuta Sato;Zheng Liu;Hiromichi Kataura

  • CVD growth of single-walled carbon nanotubes with narrow diameter distribution over Fe/MgO catalyst and their fluorescence spectroscopy.

    Hiroki Ago;Shingo Imamura;Toshiya Okazaki;Takeshi Saito

  • Trapping a C2 radical in endohedral metallofullerenes: Synthesis and structures of (Y2C2)@C82 (isomers I, II, and III)

    Takashi Inoue;Tetsuo Tomiyama;Toshiki Sugai;Toshiya Okazaki

  • Selective synthesis of double-wall carbon nanotubes by CCVD of acetylene using zeolite supports

    Tatsuki Hiraoka;Tomoju Kawakubo;Junichi Kimura;Risa Taniguchi

  • Analysis of the reactivity and selectivity of fullerene dimerization reactions at the atomic level

    Masanori Koshino;Yoshiko Niimi;Eiichi Nakamura;Hiromichi Kataura

  • Ambipolar field-effect transistor behavior of Gd@C82 metallofullerene peapods

    T. Shimada;T. Okazaki;R. Taniguchi;T. Sugai

  • Selective extraction of large-diameter single-wall carbon nanotubes with specific chiral indices by poly(9,9-dioctylfluorene-alt-benzothiadiazole).

    Masayoshi Tange;Toshiya Okazaki;Sumio Iijima

  • Double-wall carbon nanotube field-effect transistors: Ambipolar transport characteristics

    Takashi Shimada;Toshiki Sugai;Yutaka Ohno;Shigeru Kishimoto

  • Smallest limit of tube diameters for encasing of particular fullerenes determined by radial breathing mode Raman scattering

    S Bandow;M Takizawa;H Kato;T Okazaki

  • Single molecular orientation switching of an endohedral metallofullerene.

    Unknown

  • Isolation and spectroscopic characterization of Sm-containing metallofullerenes

    Toshiya Okazaki;Yongfu Lian;Zhennan Gu;Kazutomo Suenaga

  • Coaxially Stacked Coronene Columns inside Single‐Walled Carbon Nanotubes

    Toshiya Okazaki;Toshiya Okazaki;Toshiya Okazaki;Yoko Iizumi;Yoko Iizumi;Shingo Okubo;Hiromichi Kataura

  • Length-dependent plasmon resonance in single-walled carbon nanotubes.

    Takahiro Morimoto;Soon-Kil Joung;Takeshi Saito;Don N Futaba

  • Single-molecule sensing electrode embedded in-plane nanopore

    Makusu Tsutsui;Sakon Rahong;Yoko Iizumi;Toshiya Okazaki

  • Real time reaction dynamics in carbon nanotubes.

    Toshiya Okazaki;Kazutomo Suenaga;Kaori Hirahara;Shunji Bandow

Frequent Co-Authors

Sumio Iijima
Sumio Iijima Meijo University
Hisanori Shinohara
Hisanori Shinohara Nagoya University
Masako Yudasaka
Masako Yudasaka National Institute of Advanced Industrial Science and Technology
Kazu Suenaga
Kazu Suenaga Osaka University
Takeo Yamada
Takeo Yamada National Institute of Advanced Industrial Science and Technology
Kenji Hata
Kenji Hata National Institute of Advanced Industrial Science and Technology
Hiromichi Kataura
Hiromichi Kataura National Institute of Advanced Industrial Science and Technology
Yuji Awano
Yuji Awano Keio University
Susumu Okada
Susumu Okada University of Tsukuba
Yutaka Maeda
Yutaka Maeda Tokyo Gakugei University

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