World Scientist and University Rankings 2025
Japan Engineering & Technology 926 Scientists Subject Rankings - 2025
The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 197 sub-branches at global, national, and regional levels. These analyses are based on indicators such as the H-index, i10-index, and citation count, including their values from the last 6 years. As of Jan 30, 2025, the rankings are determined according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in their Beta phase. This is due to the exclusion of (873.690) scientists categorized under ‘Others’, whose profiles have yet to be determined, edited, or classified. As updates are made to these fields, the rankings will be adjusted accordingly. Note: Please keep this in mind while reviewing the rankings. For further details, explore our [University Subject Rankings].
* Total H IndexRankings
Ranking Based On Selection: 1
Materials Science
Metrics
H-Index
i10 Index
Citation Counts
219
1,464
216,298
* Total H IndexRankings
Ranking Based On Selection: 2
Materials Science
Metrics
H-Index
i10 Index
Citation Counts
156
1,113
183,545
* Total H IndexRankings
Ranking Based On Selection: 3
Materials Science
Physical Chemistry
Metrics
H-Index
i10 Index
Citation Counts
149
650
97,255
* Total H IndexRankings
Ranking Based On Selection: 4
Materials Science
Materials Science and Engineering
Magnetic Materials
Physical Metallurgy
Atom Probe Tomography
Metrics
H-Index
i10 Index
Citation Counts
129
690
56,783
* Total H IndexRankings
Ranking Based On Selection: 5
Carbon Science
Applications of novel carbon materials
nanostructured carbons
Nanocarbons
Metrics
H-Index
i10 Index
Citation Counts
119
622
62,003
* Total H IndexRankings
Ranking Based On Selection: 6
Materials Science
Metrics
H-Index
i10 Index
Citation Counts
117
456
54,268
* Total H IndexRankings
Ranking Based On Selection: 7
Layered compounds
2D materials
nanosheets
Metrics
H-Index
i10 Index
Citation Counts
115
513
54,511
* Total H IndexRankings
Ranking Based On Selection: 8
Materials Science
Metrics
H-Index
i10 Index
Citation Counts
99
477
37,248
* Total H IndexRankings
Ranking Based On Selection: 9
Materials Chemistry
Polymer Materials
Self-Assembly
Metrics
H-Index
i10 Index
Citation Counts
99
573
44,710
* Total H IndexRankings
Ranking Based On Selection: 10
Single atom spectroscopy
Single molecular imaging
Low-dimensional materials
Metrics
H-Index
i10 Index
Citation Counts
95
280
42,136
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* Total H IndexRankings
Ranking Based On Selection: 11
physical metallurgy
mechanical property
bulk nanostructured metals
Metrics
H-Index
i10 Index
Citation Counts
89
326
35,449
* Total H IndexRankings
Ranking Based On Selection: 12
computational materials science
materials informatics
materials design
Metrics
H-Index
i10 Index
Citation Counts
86
363
46,377
* Total H IndexRankings
Ranking Based On Selection: 13
Materials Science
Hydrogen
Hydrides
Energy Materials
Battery
Metrics
H-Index
i10 Index
Citation Counts
85
281
27,028
* Total H IndexRankings
Ranking Based On Selection: 14
Material Science
Metrics
H-Index
i10 Index
Citation Counts
84
215
38,258
* Total H IndexRankings
Ranking Based On Selection: 15
Magnetic Materials
Electron Microscopy
Atom Probe Tomography
Metrics
H-Index
i10 Index
Citation Counts
83
314
22,927
* Total H IndexRankings
Ranking Based On Selection: 16
Chemistry
Applied Quantum Chemistry
Metrics
H-Index
i10 Index
Citation Counts
83
435
23,795
* Total H IndexRankings
Ranking Based On Selection: 17
surface science
scanning probe microscopy
perovskite solar cell
Li battery
organic electronics
Metrics
H-Index
i10 Index
Citation Counts
82
182
25,912
* Total H IndexRankings
Ranking Based On Selection: 18
電子顕微鏡、無機材料、ナノ材料
Metrics
H-Index
i10 Index
Citation Counts
81
521
34,959
* Total H IndexRankings
Ranking Based On Selection: 19
Steel
Materials Science & Engineering
Physical Metallurgy
Phase Transformations
Hydrogen Embrittlement
Metrics
H-Index
i10 Index
Citation Counts
78
304
21,000
* Total H IndexRankings
Ranking Based On Selection: 20
Materials Science
Physics
Magnetics
Spintronics
Metrics
H-Index
i10 Index
Citation Counts
75
292
28,495
* Total H IndexRankings
Ranking Based On Selection: 21
DDS
nanomedicine
biomaterials
Metrics
H-Index
i10 Index
Citation Counts
74
204
25,068
* Total H IndexRankings
Ranking Based On Selection: 22
Materials Science
Mechanical Engineering
Metrics
H-Index
i10 Index
Citation Counts
73
232
17,428
* Total H IndexRankings
Ranking Based On Selection: 23
Solid state chemistry and physics
Metrics
H-Index
i10 Index
Citation Counts
72
373
21,914
* Total H IndexRankings
Ranking Based On Selection: 24
materials science
Metrics
H-Index
i10 Index
Citation Counts
71
152
21,256
* Total H IndexRankings
Ranking Based On Selection: 25
Mesoporous materials
Metrics
H-Index
i10 Index
Citation Counts
71
217
21,966
Kenji Watanabe
Metrics
H-Index
i10-Index
Citation Counts
219
1,464
216,298
Hideo Hosono
Metrics
H-Index
i10-Index
Citation Counts
156
1,113
183,545
Kazuhito Hashimoto
Metrics
H-Index
i10-Index
Citation Counts
149
650
97,255
Materials Science
Physical Chemistry
Kazuhiro Hono
Metrics
H-Index
i10-Index
Citation Counts
129
690
56,783
Materials Science
Materials Science and Engineering
Magnetic Materials
Physical Metallurgy
Atom Probe Tomography
Morinobu Endo
Shinshu University
Matsumoto, Japan
Metrics
H-Index
i10-Index
Citation Counts
119
622
62,003
Carbon Science
Applications of novel carbon materials
nanostructured carbons
Nanocarbons
Zenji Horita
Kyushu University
Fukuoka, Japan
Metrics
H-Index
i10-Index
Citation Counts
117
456
54,268
Takayoshi Sasaki
Metrics
H-Index
i10-Index
Citation Counts
115
513
54,511
Layered compounds
2D materials
nanosheets
Hiromi Yamashita
Osaka University
Suita, Japan
Metrics
H-Index
i10-Index
Citation Counts
99
477
37,248
Takashi Kato
University of Tokyo
Tokyo, Japan
Metrics
H-Index
i10-Index
Citation Counts
99
573
44,710
Materials Chemistry
Polymer Materials
Self-Assembly
Kazu Suenaga|Kazutomo Suenaga
Osaka University
Suita, Japan
Metrics
H-Index
i10-Index
Citation Counts
95
280
42,136
Single atom spectroscopy
Single molecular imaging
Low-dimensional materials
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Nobuhiro Tsuji
Kyoto University
Kyoto, Japan
Metrics
H-Index
i10-Index
Citation Counts
89
326
35,449
physical metallurgy
mechanical property
bulk nanostructured metals
computational materials science
materials informatics
materials design
Orimo Shin Ichi
Tohoku University
Sendai, Japan
Metrics
H-Index
i10-Index
Citation Counts
85
281
27,028
Materials Science
Hydrogen
Hydrides
Energy Materials
Battery
Takeshi Fujita
Metrics
H-Index
i10-Index
Citation Counts
84
215
38,258
Tadakatsu Ohkubo
Metrics
H-Index
i10-Index
Citation Counts
83
314
22,927
Magnetic Materials
Electron Microscopy
Atom Probe Tomography
Kazunari Yoshizawa
Kyushu University
Fukuoka, Japan
Metrics
H-Index
i10-Index
Citation Counts
83
435
23,795
Chemistry
Applied Quantum Chemistry
Yabing Qi
Metrics
H-Index
i10-Index
Citation Counts
82
182
25,912
surface science
scanning probe microscopy
perovskite solar cell
Li battery
organic electronics
松井良夫
Metrics
H-Index
i10-Index
Citation Counts
81
521
34,959
Kaneaki Tsuzaki
Kyushu University
Fukuoka, Japan
Metrics
H-Index
i10-Index
Citation Counts
78
304
21,000
Steel
Materials Science & Engineering
Physical Metallurgy
Phase Transformations
Hydrogen Embrittlement
Shinji Yuasa
Metrics
H-Index
i10-Index
Citation Counts
75
292
28,495
Materials Science
Physics
Magnetics
Spintronics
Atsushi Harada
Metrics
H-Index
i10-Index
Citation Counts
74
204
25,068
DDS
nanomedicine
biomaterials
Shigeharu Kamado
Nagaoka University of Technology
Nagaoka, Japan
Metrics
H-Index
i10-Index
Citation Counts
73
232
17,428
Materials Science
Mechanical Engineering
Mitsuru Itoh
Metrics
H-Index
i10-Index
Citation Counts
72
373
21,914
Solid state chemistry and physics
Akihiko Hirata
Waseda University
Tokyo, Japan
Metrics
H-Index
i10-Index
Citation Counts
71
152
21,256
Shinji Inagaki
Toyota Central R&D Labs., Inc
Toyota, Japan
Metrics
H-Index
i10-Index
Citation Counts
71
217
21,966