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Chemistry
Finland
2026

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 94 1674 1486 3 3 352 39581

Hannu Häkkinen publications per year

The chart shows the history of publications by Hannu Häkkinen between 1970 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Hannu Häkkinen published across 57 years, from 1970 to 2026, averaging 7.3 papers a year. Output peaked at 28 publications in 2022. 23 of the 417 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1970 to 2026. Vertical axis: number of publications, 0 to 28. Peak 28 publications in 2022. 1970: 1 publication 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 0 publications 1986: 0 publications 1987: 0 publications 1988: 0 publications 1989: 2 publications 1990: 3 publications 1991: 2 publications 1992: 2 publications 1993: 2 publications 1994: 4 publications 1995: 4 publications 1996: 4 publications 1997: 5 publications 1998: 11 publications 1999: 9 publications 2000: 7 publications 2001: 7 publications 2002: 6 publications 2003: 10 publications 2004: 4 publications 2005: 7 publications 2006: 10 publications 2007: 9 publications 2008: 13 publications 2009: 9 publications 2010: 13 publications 2011: 12 publications 2012: 16 publications 2013: 13 publications 2014: 19 publications 2015: 21 publications 2016: 18 publications 2017: 14 publications 2018: 13 publications 2019: 14 publications 2020: 14 publications 2021: 21 publications 2022: 28 publications 2023: 24 publications 2024: 23 publications 2025: 20 publications 2026: 3 publications
1970 2026

417 publications in total across all disciplines

View publications per year as a table
Hannu Häkkinen: publications per year, 1970 to 2026
Year Publications
1970 1
1971 0
1972 0
1973 0
1974 0
1975 0
1976 0
1977 0
1978 0
1979 0
1980 0
1981 0
1982 0
1983 0
1984 0
1985 0
1986 0
1987 0
1988 0
1989 2
1990 3
1991 2
1992 2
1993 2
1994 4
1995 4
1996 4
1997 5
1998 11
1999 9
2000 7
2001 7
2002 6
2003 10
2004 4
2005 7
2006 10
2007 9
2008 13
2009 9
2010 13
2011 12
2012 16
2013 13
2014 19
2015 21
2016 18
2017 14
2018 13
2019 14
2020 14
2021 21
2022 28
2023 24
2024 23
2025 20
2026 3
Total 417
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Hannu Häkkinen publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Hannu Häkkinen sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 341–360 publications, is where this scientist sits. 61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61–80 publications 1,295+

This scientist: 352 publications — 73rd percentile

73% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628 352
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Hannu Häkkinen D-index placement in Chemistry in 2026

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

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 94–95 D-Index, is where this scientist sits. 40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40–41 D-Index 159+

This scientist: 94 D-Index — 91st percentile

91% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155 94
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Research.com Recognitions

  • 2026 - Research.com Chemistry in Finland Leader Award
  • 2025 - Research.com Chemistry in Finland Leader Award
  • 2023 - Research.com Chemistry in Finland Leader Award
  • 2022 - Research.com Chemistry in Finland Leader Award

Overview

Hannu Häkkinen is affiliated with the University of Jyväskylä in Finland and has a substantial body of research within the Materials Science field. Their work has a particular emphasis on Materials Chemistry, Electronic, Optical and Magnetic Materials, Organic Chemistry, Pediatrics, Perinatology and Child Health, as well as Inorganic Chemistry.

The scientist's research focuses on several key topics including:

  • Nanocluster Synthesis and Applications
  • Advanced Nanomaterials in Catalysis
  • Gold and Silver Nanoparticles Synthesis and Applications
  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Pharmacological Effects and Toxicity Studies
  • Nanomaterials for catalytic reactions

Frequent collaborators in their research include Sami Malola, Nanfeng Zheng, Boon K. Teo, Guocheng Deng, and María Francisca Matus.

Häkkinen's publications commonly appear in notable venues such as:

  • The Cambridge Structural Database
  • Journal of the American Chemical Society
  • JYX
  • Angewandte Chemie International Edition
  • Angewandte Chemie

Selected recent papers demonstrate a range of topics and publication venues:

  • "Understanding ligand-protected noble metal nanoclusters at work" (2023), published in Nature Reviews Materials
  • "GPAW: An open Python package for electronic structure calculations" (2024), published in The Journal of Chemical Physics
  • "N-Heterocyclic Carbene-Stabilized Hydrido Au24 Nanoclusters: Synthesis, Structure, and Electrocatalytic Reduction of CO2" (2022), published in Journal of the American Chemical Society
  • "Supercrystal engineering of atomically precise gold nanoparticles promoted by surface dynamics" (2022), published in Nature Chemistry
  • "Solvent-mediated assembly of atom-precise gold-silver nanoclusters to semiconducting one-dimensional materials" (2020), published in Nature Communications

The diversity in publication venues and topics underscores Häkkinen's multidisciplinary engagement across nanomaterials and their applications, particularly focusing on synthesis, catalysis, and crystallography.

Best Publications

  • Electronic structure calculations with GPAW: a real-space implementation of the projector augmented-wave method

    J. Enkovaara;Carsten Rostgaard;Jens Jørgen Mortensen;Jingzhe Chen

  • The gold–sulfur interface at the nanoscale

    Hannu Häkkinen

  • A unified view of ligand-protected gold clusters as superatom complexes

    Michael Walter;Jaakko Akola;Olga Lopez-Acevedo;Pablo D. Jadzinsky

  • When Gold Is Not Noble: Nanoscale Gold Catalysts

    A. Sanchez;S. Abbet;U. Heiz;W. D. Schneider

  • Charging Effects on Bonding and Catalyzed Oxidation of CO on Au8 Clusters on MgO

    Bokwon Yoon;Hannu Häkkinen;Uzi Landman;Anke S. Wörz

  • Self-passivating edge reconstructions of graphene.

    Pekka Koskinen;Sami Malola;Hannu Häkkinen

  • On the structure of thiolate-protected Au25

    Jaakko Akola;Michael Walter;Robert L. Whetten;Hannu Häkkinen

  • All-thiol-stabilized Ag44 and Au12Ag32 nanoparticles with single-crystal structures

    Huayan Yang;Yu Wang;Huaqi Huang;Lars Gell

  • Atomic and electronic structure of gold clusters: understanding flakes, cages and superatoms from simple concepts

    Hannu Häkkinen

  • On the Electronic and Atomic Structures of Small AuN- (N = 4−14) Clusters: A Photoelectron Spectroscopy and Density-Functional Study

    Hannu Häkkinen;Bokwon Yoon;Uzi Landman;Xi Li

  • Structural, electronic, and impurity-doping effects in nanoscale chemistry: supported gold nanoclusters.

    Hannu Häkkinen;Stéphane Abbet;Antonio Sanchez;Ulrich Heiz

  • Gold clusters ( Au N , 2 N 1 0 ) and their anions

    Hannu Häkkinen;Uzi Landman

  • Divide and protect : Capping gold nanoclusters with molecular gold-thiolate rings

    Hannu Häkkinen;Michael Walter;Henrik Grönbeck

  • Structure and Bonding in the Ubiquitous Icosahedral Metallic Gold Cluster Au144(SR)60

    Olga Lopez-Acevedo;Jaakko Akola;Robert L. Whetten;Henrik Grönbeck

  • N-heterocyclic carbene-functionalized magic-number gold nanoclusters.

    Mina R. Narouz;Kimberly M. Osten;Phillip J. Unsworth;Renee W. Y. Man

  • Catalytic CO oxidation by free Au2-: experiment and theory.

    Liana D. Socaciu;Jan Hagen;Thorsten M. Bernhardt;Ludger Wöste

  • Chirality and Electronic Structure of the Thiolate-Protected Au38 Nanocluster

    Olga Lopez-Acevedo;Hironori Tsunoyama;Tatsuya Tsukuda;Hannu Häkkinen

  • Interaction of O2 with Gold Clusters: Molecular and Dissociative Adsorption

    Bokwon Yoon;Hannu Häkkinen;Uzi Landman

  • Atomically Precise Alkynyl-Protected Metal Nanoclusters as a Model Catalyst: Observation of Promoting Effect of Surface Ligands on Catalysis by Metal Nanoparticles.

    Yu Wang;Xian-Kai Wan;Liting Ren;Haifeng Su

  • A Critical Size for Emergence of Nonbulk Electronic and Geometric Structures in Dodecanethiolate-Protected Au Clusters

    Yuichi Negishi;Tafu Nakazaki;Sami Malola;Shinjiro Takano

Frequent Co-Authors

Sami Malola
Sami Malola University of Jyväskylä
Uzi Landman
Uzi Landman Georgia Institute of Technology
Jaakko Akola
Jaakko Akola Norwegian University of Science and Technology
Michael Moseler
Michael Moseler University of Freiburg
Nanfeng Zheng
Nanfeng Zheng Xiamen University
Henrik Grönbeck
Henrik Grönbeck Chalmers University of Technology
Mika Pettersson
Mika Pettersson University of Jyväskylä
Robert L. Whetten
Robert L. Whetten Northern Arizona University
Kimmo Kaski
Kimmo Kaski Aalto University
Tatsuya Tsukuda
Tatsuya Tsukuda University of Tokyo

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