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Takamasa Ishigaki

Takamasa Ishigaki

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Materials Science 41 12677 12262 801 764 234 7698

Takamasa Ishigaki publications per year

The chart shows the history of publications by Takamasa Ishigaki between 1982 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Takamasa Ishigaki published across 44 years, from 1982 to 2025, averaging 5.6 papers a year. Output peaked at 22 publications in 2004. 6 of the 247 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1982 to 2025. Vertical axis: number of publications, 0 to 22. Peak 22 publications in 2004. 1982: 1 publication 1983: 1 publication 1984: 4 publications 1985: 0 publications 1986: 1 publication 1987: 0 publications 1988: 1 publication 1989: 1 publication 1990: 1 publication 1991: 0 publications 1992: 4 publications 1993: 1 publication 1994: 2 publications 1995: 3 publications 1996: 4 publications 1997: 4 publications 1998: 8 publications 1999: 10 publications 2000: 8 publications 2001: 6 publications 2002: 13 publications 2003: 13 publications 2004: 22 publications 2005: 12 publications 2006: 19 publications 2007: 15 publications 2008: 18 publications 2009: 6 publications 2010: 5 publications 2011: 13 publications 2012: 3 publications 2013: 4 publications 2014: 4 publications 2015: 1 publication 2016: 3 publications 2017: 4 publications 2018: 7 publications 2019: 4 publications 2020: 3 publications 2021: 7 publications 2022: 3 publications 2023: 2 publications 2024: 3 publications 2025: 3 publications
1982 2025

247 publications in total across all disciplines

View publications per year as a table
Takamasa Ishigaki: publications per year, 1982 to 2025
Year Publications
1982 1
1983 1
1984 4
1985 0
1986 1
1987 0
1988 1
1989 1
1990 1
1991 0
1992 4
1993 1
1994 2
1995 3
1996 4
1997 4
1998 8
1999 10
2000 8
2001 6
2002 13
2003 13
2004 22
2005 12
2006 19
2007 15
2008 18
2009 6
2010 5
2011 13
2012 3
2013 4
2014 4
2015 1
2016 3
2017 4
2018 7
2019 4
2020 3
2021 7
2022 3
2023 2
2024 3
2025 3
Total 247
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Takamasa Ishigaki 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 Takamasa Ishigaki 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: 234 publications — 42nd percentile

42% 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
230–249 766 234
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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Takamasa Ishigaki 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 Takamasa Ishigaki 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, 40–41 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: 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.

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 41
42–43 450
44–45 612
46–47 612
48–49 598
50–51 657
52–53 667
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

Takamasa Ishigaki is affiliated with Hosei University in Japan and specializes in materials science, engineering, and energy disciplines. Their research primarily focuses on materials chemistry, renewable energy, sustainability, electrical and electronic engineering, mechanical engineering, and spectroscopy.

Their extensive work covers several key topics including:

  • Advanced Photocatalysis Techniques
  • TiO2 Photocatalysis and Solar Cells
  • Mesoporous Materials and Catalysis
  • Copper-based Nanomaterials and Applications
  • ZnO Doping and Properties
  • Quantum Dots Synthesis and Properties
  • Advanced Materials and Composites

Among the recent scholarly contributions by Takamasa Ishigaki are the following papers:

  • Enhanced visible-light photocatalytic activity of anatase-rutile mixed-phase nano-size powder given by high-temperature heat treatment, 2020, Royal Society Open Science
  • Fabrication of porous (Ba,Sr)(Co,Fe)O3-δ (BSCF) ceramics using gelatinization and retrogradation phenomena of starch as pore-forming agent, 2020, Ceramics International
  • Fabrication and characterization of zeolite bulk body containing mesopores and macropores using starch as pore-forming agent, 2022, Advanced Powder Technology
  • Spontaneously formed gradient chemical compositional structures of niobium doped titanium dioxide nanoparticles enhance ultraviolet- and visible-light photocatalytic performance, 2021, Scientific Reports
  • Effect of crystalline orientation on photocatalytic performance for Nb-doped TiO2 nanoparticles, 2021, Advanced Powder Technology

Takamasa Ishigaki has frequently collaborated with several researchers, including:

  • Tetsuo Uchikoshi
  • Naoki Tarutani
  • Kento Ishii
  • Satoshi Koyasu
  • Masako Uematsu

Their publications commonly appear in notable journals such as:

  • Langmuir
  • Journal of the Japan Society of Powder and Powder Metallurgy
  • Advanced Powder Technology
  • Royal Society Open Science
  • Ceramics International

Best Publications

  • Diffusion of oxide ion vacancies in perovskite-type oxides

    Takamasa Ishigaki;Shigeru Yamauchi;Kohji Kishio;Junichiro Mizusaki

  • Anatase, Brookite, and Rutile Nanocrystals via Redox Reactions under Mild Hydrothermal Conditions: Phase-Selective Synthesis and Physicochemical Properties

    Ji-Guang Li;Takamasa Ishigaki;Xudong Sun

  • Wavelength-sensitive photocatalytic degradation of methyl orange in aqueous suspension over iron(III)-doped TiO2 nanopowders under UV and visible light irradiation.

    Wang Xh;Li Jg;Kamiyama H;Moriyoshi Y

  • Monodispersed Colloidal Spheres for Uniform Y2O3:Eu3+ Red-Phosphor Particles and Greatly Enhanced Luminescence by Simultaneous Gd3+ Doping

    Ji-Guang Li;Xiaodong Li;Xudong Sun;Takamasa Ishigaki

  • Pyrogenic Iron(III)-Doped TiO2 Nanopowders Synthesized in RF Thermal Plasma: Phase Formation, Defect Structure, Band Gap, and Magnetic Properties

    Wang Xh;Li Jg;Kamiyama H;Katada M

  • Effect of hydrogen doping on ultraviolet emission spectra of various types of ZnO

    Naoki Ohashi;Takamasa Ishigaki;Nobuhiro Okada;Takashi Sekiguchi

  • Ultrasonic Dispersion of TiO2 Nanoparticles in Aqueous Suspension

    Kimitoshi Sato;Ji-Guang Li;Hidehiro Kamiya;Takamasa Ishigaki

  • Charge separation at the rutile/anatase interface: a dominant factor of photocatalytic activity

    Takahira Miyagi;Takahira Miyagi;Masayuki Kamei;Takefumi Mitsuhashi;Takamasa Ishigaki

  • Uniform Colloidal Spheres for (Y1−xGdx)2O3 (x = 0–1): Formation Mechanism, Compositional Impacts, and Physicochemical Properties of the Oxides

    Ji-Guang Li;Xiaodong Li;Xudong Sun;Takayasu Ikegami

  • Thermodynamic analysis of nucleation of anatase and rutile from TiO2 melt

    Yali Li;Takamasa Ishigaki

  • Phase structure and luminescence properties of Eu3+-doped TiO2 nanocrystals synthesized by Ar/O2 radio frequency thermal plasma oxidation of liquid precursor mists.

    Ji-Guang Li;Xiaohui Wang;Kenji Watanabe;Takamasa Ishigaki

  • Brookite → rutile phase transformation of TiO2 studied with monodispersed particles

    Ji-Guang Li;Takamasa Ishigaki

  • Tracer diffusion coefficient of oxide ions in LaCoO3 single crystal

    Takamasa Ishigaki;Shigeru Yamauchi;Junichiro Mizusaki;Kazuo Fueki

  • Passivation of active recombination centers in ZnO by hydrogen doping

    Naoki Ohashi;Takamasa Ishigaki;Nobuhiro Okada;Hiroyuki Taguchi

  • Preparation of pure rutile and anatase TiO2 nanopowders using RF thermal plasma

    Seung-Min Oh;Takamasa Ishigaki

  • Monodispersed Spherical Particles of Brookite‐Type TiO2: Synthesis, Characterization, and Photocatalytic Property

    Ji-Guang Li;Chengchun Tang;Di Li;Hajime Haneda

  • Cobalt-Doped TiO2 Nanocrystallites: Radio-Frequency Thermal Plasma Processing, Phase Structure, and Magnetic Properties

    Ji-Guang Li;Robert Büchel;Masaaki Isobe;Takao Mori

  • Enhancement and patterning of ultraviolet emission in ZnO with an electron beam

    Rongguo Xie;Takashi Sekiguchi;Takamasa Ishigaki;Naoki Ohashi

  • Controlling the synthesis of TaC nanopowders by injecting liquid precursor into RF induction plasma

    Takamasa Ishigaki;Seung-Min Oh;Seung-Min Oh;Ji-Guang Li;Dong-Wha Park

  • Defect‐Mediated Photoluminescence Dynamics of Eu3+‐Doped TiO2 Nanocrystals Revealed at the Single‐Particle or Single‐Aggregate Level

    Takashi Tachikawa;Takamasa Ishigaki;Ji-Guang Li;Mamoru Fujitsuka

Frequent Co-Authors

Ji-Guang Li
Ji-Guang Li National Institute for Materials Science
Naoki Ohashi
Naoki Ohashi National Institute for Materials Science
Takayuki Watanabe
Takayuki Watanabe Kyushu University
Hajime Haneda
Hajime Haneda National Institute for Materials Science
Takashi Sekiguchi
Takashi Sekiguchi University of Tsukuba
Isao Sakaguchi
Isao Sakaguchi National Institute for Materials Science
Yoshio Sakka
Yoshio Sakka National Institute for Materials Science
Xiaodong Li
Xiaodong Li Northeastern University
Hideomi Koinuma
Hideomi Koinuma Tokyo Institute of Technology
Keiji Kurashima
Keiji Kurashima National Institute for Materials Science

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