World Scientist and University Rankings 2025
Japan Natural Sciences 1.448 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 Feb 03, 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 (870.053) 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
Photocatalysis
Boron-doped diamond electrode
Metrics
H-Index
i10 Index
Citation Counts
154
858
170,787
* Total H IndexRankings
Ranking Based On Selection: 2
Chemistry of Coordination Space
Porous Coordination Polymers
Metal-Organic Frameworks
Metrics
H-Index
i10 Index
Citation Counts
143
673
99,459
* Total H IndexRankings
Ranking Based On Selection: 3
asymmetric synthesis
catalysis
organic chemistry
organic synthesis
organometallic chemistry
Metrics
H-Index
i10 Index
Citation Counts
140
493
90,087
* Total H IndexRankings
Ranking Based On Selection: 4
Molecular Machine
Supramolecular Chemistry
Self-assembly
Molecular Recognition
Polymer
Metrics
H-Index
i10 Index
Citation Counts
124
901
70,900
* Total H IndexRankings
Ranking Based On Selection: 5
Organic Synthesis
Catalysis
Organometallic
Total synthesis
Metrics
H-Index
i10 Index
Citation Counts
122
679
56,585
* Total H IndexRankings
Ranking Based On Selection: 6
Artificial photosynthesis
Solar energy conversion
Solar cells
Photochemistry
Materials chemistry
Metrics
H-Index
i10 Index
Citation Counts
98
375
34,720
* Total H IndexRankings
Ranking Based On Selection: 7
Artificial photosynthesis
CO2 fixation
Heterogeneous photocatalysis
Solar energy conversion
Metrics
H-Index
i10 Index
Citation Counts
97
255
56,959
* Total H IndexRankings
Ranking Based On Selection: 8
Polymer and supramolecular chemistry and chiral materials
Metrics
H-Index
i10 Index
Citation Counts
96
336
31,384
* Total H IndexRankings
Ranking Based On Selection: 9
Electrochemstry
Li/Na/K/Rb-ion batteries
Biofuel cells
Ion sensors
Metrics
H-Index
i10 Index
Citation Counts
91
254
44,368
* Total H IndexRankings
Ranking Based On Selection: 10
chemistry
organic chemistry
catalysis
asymmetric catalysis
iodine
Metrics
H-Index
i10 Index
Citation Counts
91
326
27,713
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* Total H IndexRankings
Ranking Based On Selection: 11
photocatalysis
anisotropic particles
Metrics
H-Index
i10 Index
Citation Counts
89
308
29,199
* Total H IndexRankings
Ranking Based On Selection: 12
Polymer Science
Metrics
H-Index
i10 Index
Citation Counts
88
480
30,932
* Total H IndexRankings
Ranking Based On Selection: 13
polymer chemistry
Metrics
H-Index
i10 Index
Citation Counts
88
333
35,137
* Total H IndexRankings
Ranking Based On Selection: 14
Chemistry
Metrics
H-Index
i10 Index
Citation Counts
87
347
28,374
* Total H IndexRankings
Ranking Based On Selection: 15
Department of Chemistry
Metrics
H-Index
i10 Index
Citation Counts
87
519
31,139
* Total H IndexRankings
Ranking Based On Selection: 16
porous materials
sol-gel
silica
hplc
catalyst
Metrics
H-Index
i10 Index
Citation Counts
84
312
29,457
* Total H IndexRankings
Ranking Based On Selection: 17
Electrochemistry
Photocatalysis
Photoelectrochemistry
Fuel cells
Metrics
H-Index
i10 Index
Citation Counts
84
229
41,858
* Total H IndexRankings
Ranking Based On Selection: 18
catalysis
Metrics
H-Index
i10 Index
Citation Counts
83
317
21,448
* Total H IndexRankings
Ranking Based On Selection: 19
Polymer Materials
Radiation Chemistry
Photochemistry
Conductivity
Functional Materials ...
Metrics
H-Index
i10 Index
Citation Counts
83
375
29,037
* Total H IndexRankings
Ranking Based On Selection: 20
Asymmetric Catalysis
C-H Functionalization
Metrics
H-Index
i10 Index
Citation Counts
82
175
18,430
* Total H IndexRankings
Ranking Based On Selection: 21
Chemical Biology/Supramolecular Chemistry
Metrics
H-Index
i10 Index
Citation Counts
80
241
21,185
* Total H IndexRankings
Ranking Based On Selection: 22
Chemistry
Biochemical Engineering
Medical Engineering
Metrics
H-Index
i10 Index
Citation Counts
80
513
27,503
* Total H IndexRankings
Ranking Based On Selection: 23
photochemistry
solar cell
battery
Metrics
H-Index
i10 Index
Citation Counts
79
296
24,186
* Total H IndexRankings
Ranking Based On Selection: 24
Organic Chemistry
Metrics
H-Index
i10 Index
Citation Counts
79
376
34,043
* Total H IndexRankings
Ranking Based On Selection: 25
Luminescence
Optical Spectroscopy
Optoelectronics
Photovoltaics
Nanoscience
Metrics
H-Index
i10 Index
Citation Counts
79
360
25,286
Akira Fujishima
Tokyo University of Science
Tokyo, Japan
Metrics
H-Index
i10-Index
Citation Counts
154
858
170,787
Photocatalysis
Boron-doped diamond electrode
Susumu Kitagawa
Kyoto University
Kyoto, Japan
Metrics
H-Index
i10-Index
Citation Counts
143
673
99,459
Chemistry of Coordination Space
Porous Coordination Polymers
Metal-Organic Frameworks
Ryoji Noyori
Nagoya University
Nagoya, Japan
Metrics
H-Index
i10-Index
Citation Counts
140
493
90,087
asymmetric synthesis
catalysis
organic chemistry
organic synthesis
organometallic chemistry
Seiji Shinkai
Kyushu University
Fukuoka, Japan
Metrics
H-Index
i10-Index
Citation Counts
124
901
70,900
Molecular Machine
Supramolecular Chemistry
Self-assembly
Molecular Recognition
Polymer
Hisashi Yamamoto
Chubu University
Kasugai, Japan
Metrics
H-Index
i10-Index
Citation Counts
122
679
56,585
Organic Synthesis
Catalysis
Organometallic
Total synthesis
Hiroshi Imahori
Kyoto University
Kyoto, Japan
Metrics
H-Index
i10-Index
Citation Counts
98
375
34,720
Artificial photosynthesis
Solar energy conversion
Solar cells
Photochemistry
Materials chemistry
Kazuhiko Maeda
Metrics
H-Index
i10-Index
Citation Counts
97
255
56,959
Artificial photosynthesis
CO2 fixation
Heterogeneous photocatalysis
Solar energy conversion
Eiji Yashima
Nagoya University
Nagoya, Japan
Metrics
H-Index
i10-Index
Citation Counts
96
336
31,384
Polymer and supramolecular chemistry and chiral materials
Shinichi Komaba
Tokyo University of Science
Tokyo, Japan
Metrics
H-Index
i10-Index
Citation Counts
91
254
44,368
Electrochemstry
Li/Na/K/Rb-ion batteries
Biofuel cells
Ion sensors
Kazuaki Ishihara
Nagoya University
Nagoya, Japan
Metrics
H-Index
i10-Index
Citation Counts
91
326
27,713
chemistry
organic chemistry
catalysis
asymmetric catalysis
iodine
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Bunsho Ohtani
Hokkaido University
Sapporo, Japan
Metrics
H-Index
i10-Index
Citation Counts
89
308
29,199
photocatalysis
anisotropic particles
Atsushi Takahara
Kyushu University
Fukuoka, Japan
Metrics
H-Index
i10-Index
Citation Counts
88
480
30,932
Mitsuo Sawamoto
Chubu University
Kasugai, Japan
Metrics
H-Index
i10-Index
Citation Counts
88
333
35,137
Hiroshi Kitagawa
Kyoto University
Kyoto, Japan
Metrics
H-Index
i10-Index
Citation Counts
87
347
28,374
Hiroshi Sugiyama
Kyoto University
Kyoto, Japan
Metrics
H-Index
i10-Index
Citation Counts
87
519
31,139
porous materials
sol-gel
silica
hplc
catalyst
Donald Tryk
University of Yamanashi
Kofu, Japan
Metrics
H-Index
i10-Index
Citation Counts
84
229
41,858
Electrochemistry
Photocatalysis
Photoelectrochemistry
Fuel cells
Kenichi Shimizu
Hokkaido University
Sapporo, Japan
Metrics
H-Index
i10-Index
Citation Counts
83
317
21,448
Polymer Materials
Radiation Chemistry
Photochemistry
Conductivity
Functional Materials ...
Shigeki Matsunaga
Hokkaido University
Sapporo, Japan
Metrics
H-Index
i10-Index
Citation Counts
82
175
18,430
Asymmetric Catalysis
C-H Functionalization
Chemical Biology/Supramolecular Chemistry
Masahiro Goto
Kyushu University
Fukuoka, Japan
Metrics
H-Index
i10-Index
Citation Counts
80
513
27,503
Chemistry
Biochemical Engineering
Medical Engineering
Tingli Ma
Kyushu Institute of Technology
Kitakyushu, Japan
Metrics
H-Index
i10-Index
Citation Counts
79
296
24,186
photochemistry
solar cell
battery
Yoshihiko Kanemitsu
Kyoto University
Kyoto, Japan
Metrics
H-Index
i10-Index
Citation Counts
79
360
25,286
Luminescence
Optical Spectroscopy
Optoelectronics
Photovoltaics
Nanoscience