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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 53 9316 8996 278 276 277 8824

John Drennan publications per year

The chart shows the history of publications by John Drennan between 1977 and 2024, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. John Drennan published across 48 years, from 1977 to 2024, averaging 6.2 papers a year. Output peaked at 27 publications in 2007. 4 of the 296 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1977 to 2024. Vertical axis: number of publications, 0 to 27. Peak 27 publications in 2007. 1977: 1 publication 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 3 publications 1982: 4 publications 1983: 2 publications 1984: 0 publications 1985: 2 publications 1986: 4 publications 1987: 4 publications 1988: 1 publication 1989: 3 publications 1990: 6 publications 1991: 6 publications 1992: 3 publications 1993: 1 publication 1994: 3 publications 1995: 4 publications 1996: 5 publications 1997: 3 publications 1998: 6 publications 1999: 1 publication 2000: 8 publications 2001: 8 publications 2002: 14 publications 2003: 11 publications 2004: 15 publications 2005: 16 publications 2006: 21 publications 2007: 27 publications 2008: 21 publications 2009: 15 publications 2010: 10 publications 2011: 15 publications 2012: 13 publications 2013: 13 publications 2014: 9 publications 2015: 5 publications 2016: 5 publications 2017: 2 publications 2018: 2 publications 2019: 0 publications 2020: 0 publications 2021: 0 publications 2022: 0 publications 2023: 3 publications 2024: 1 publication
1977 2024

296 publications in total across all disciplines

View publications per year as a table
John Drennan: publications per year, 1977 to 2024
Year Publications
1977 1
1978 0
1979 0
1980 0
1981 3
1982 4
1983 2
1984 0
1985 2
1986 4
1987 4
1988 1
1989 3
1990 6
1991 6
1992 3
1993 1
1994 3
1995 4
1996 5
1997 3
1998 6
1999 1
2000 8
2001 8
2002 14
2003 11
2004 15
2005 16
2006 21
2007 27
2008 21
2009 15
2010 10
2011 15
2012 13
2013 13
2014 9
2015 5
2016 5
2017 2
2018 2
2019 0
2020 0
2021 0
2022 0
2023 3
2024 1
Total 296
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John Drennan 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 John Drennan 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, 270–289 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: 277 publications — 54th percentile

54% 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
250–269 726
270–289 665 277
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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John Drennan 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 John Drennan 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: 53 D-Index — 30th percentile

30% 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 53
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

John Drennan is affiliated with the University of Queensland in Australia and focuses on interdisciplinary research primarily within the social sciences. Their scholarly work spans across several fields, including economics, engineering, and political science, with particular attention to international relations and policy studies.

Their research covers a range of topics that intersect military and defense studies, technology management, and regional geopolitical issues. Key areas of work include:

  • Defense, Military, and Policy Studies
  • Military and Defense Studies
  • Nuclear Issues and Defense
  • Island Studies and Pacific Affairs
  • Arctic and Russian Policy Studies
  • Technology Assessment and Management

Drennan's publications include a collection of books published through RAND Corporation eBooks, focusing on strategic competition, military roles, and geopolitical conflict analysis. Notable titles include:

  • Understanding Influence in the Strategic Competition with China (2021)
  • Gaining the Edge: Identifying and Leveraging Frameworks for Enabling Army Contributions to Competition (2023)
  • Mischief, Malevolence, or Indifference? How Competitors and Adversaries Could Exploit Climate-Related Conflict in the U.S. Central Command Area of Responsibility (2023)
  • The Backbone of U.S. Joint Operations: Army Roles in the Indo-Pacific (2023)
  • Insights from the Plan Blue 21 Game: Examining the Role of Sensing and Partner and Allied Contributions to Competition with Russia in the Arctic (2023)

Their academic collaboration network includes frequent co-authors such as Michelle Grisé, Michael J. Mazarr, Emily Ellinger, Molly Dunigan, and Sandra Kay Evans, reflecting sustained interdisciplinary and policy-focused research partnerships.

Drennan's expertise extends through various social science domains with subfield concentrations in political science and international relations, economics and econometrics, demography, sociology, and risk analysis. This diversity informs a comprehensive approach to studying global defense policies and the strategic modalities of contemporary military competition.

Best Publications

  • Indium selenides: structural characteristics, synthesis and their thermoelectric performances.

    Guang Han;Zhi-Gang Chen;John Drennan;Jin Zou

  • Yttria-zirconia: Effect of microstructure on conductivity

    S. P. S. Badwal;J. Drennan

  • Oxide ionic conductivity and microstructures of Sm- or La-doped CeO2-based systems

    Toshiyuki Mori;John Drennan;Jong Heun Lee;Ji Guang Li

  • Influence of synthesis route on the catalytic properties of La1−xSrxMnO3

    Robert J Bell;Graeme J Millar;John Drennan

  • The structural properties of the oxygen conducting δ phase of Bi2O3

    P D Battle;C R A Catlow;J Drennan;A D Murray

  • An investigation of conductivity, microstructure and stability of electrolyte compositions in the system 9 mol% (Sc2O3-Y2O3)-ZrO2(Al2O3)

    S.P.S Badwal;F.T Ciacchi;S Rajendran;J Drennan

  • Characterisation, conductivity and mechanical properties of theoxygen-ion conductor La0.9Sr0.1Ga0.8Mg0.2O3-x

    John Drennan;Viktor Zelizko;David Hay;Fabio T. Ciacchi

  • Microstructural Analysis of Sintered High-Conductivity Zirconia with Al203 Additions

    E.P. Butler;J. Drennan

  • Highly sensitive and fast responding CO sensor using SnO2 nanosheets

    Chang Sup Moon;Hae Ryong Kim;Graeme Auchterlonie;John Drennan

  • Oxygen-vacancy ordering in lanthanide-doped ceria: Dopant-type dependence and structure model

    Ding Rong Ou;Toshiyuki Mori;Fei Ye;Jin Zou

  • Insight into surface segregation and chromium deposition on La0.6Sr0.4Co0.2Fe0.8O3−δ cathodes of solid oxide fuel cells

    Ling Zhao;John Drennan;Chun Kong;Sudath Amarasinghe

  • Characterization of precursors to methanol synthesis catalysts Cu/ZnO system

    Graeme J. Millar;Ivan H. Holm;Philippa J. R. Uwins;John Drennan

  • Oxygen vacancy ordering in heavily rare-earth-doped ceria

    Ding Rong Ou;Toshiyuki Mori;Fei Ye;Tomoaki Kobayashi

  • Influence of particle morphology on nanostructural feature and conducting property in Sm-doped CeO2 sintered body

    Toshiyuki Mori;Yarong Wang;John Drennan;Graeme Auchterlonie

  • Microstructural and Metal-Support Interactions of the Pt-CeO2/C Catalysts for Direct Methanol Fuel Cell Application

    Ding Rong Ou;Ding Rong Ou;Toshiyuki Mori;Toshiyuki Mori;Hirotaka Togasaki;Hirotaka Togasaki;Motoi Takahashi

  • Microstructures and electrolytic properties of yttrium-doped ceria electrolytes: Dopant concentration and grain size dependences

    Ding Rong Ou;Toshiyuki Mori;Fei Ye;Motoi Takahashi

  • Effect of Co addition on the lattice parameter, electrical conductivity and sintering of gadolinia-doped ceria

    G.S. Lewis;A. Atkinson;B.C.H. Steele;J. Drennan

  • Metal stearate distributions in modern artists' oil paints: surface and cross-sectional investigation of reference paint films using conventional and synchrotron infrared microspectroscopy.

    Gillian Osmond;Jaap J. Boon;Ljiljana Puskar;John Drennan

  • Investigation of the stability of ceria-gadolinia electrolytes in solid oxide fuel cell environments

    S. P. S. Badwal;F. T. Ciacchi;J. Drennan

  • Proton conductivity of mesoporous sol–gel zirconium phosphates for fuel cell applications

    Warren H. J. Hogarth;João C. Diniz da Costa;John Drennan;G. Q. (Max) Lu

  • An electron microscope investigation of phases in the system LaNiO

    Unknown

Frequent Co-Authors

Toshiyuki Mori
Toshiyuki Mori National Institute for Materials Science
Jin Zou
Jin Zou University of Queensland
Fei Ye
Fei Ye Southern University of Science and Technology
Zhigang Chen
Zhigang Chen Queensland University of Technology
Ji-Guang Li
Ji-Guang Li National Institute for Materials Science
Sukhvinder P.S. Badwal
Sukhvinder P.S. Badwal Commonwealth Scientific and Industrial Research Organisation
Jong Heun Lee
Jong Heun Lee Korea University
Jane Hunter
Jane Hunter University of Technology Sydney
G. B. Schaffer
G. B. Schaffer University of Melbourne
Gao Qing Lu
Gao Qing Lu University of Surrey

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