University, Subject, Country, Region, World
Japan 1.450 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 29, 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 (873.688) 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: 26
Catalysis
Nanoparticles
Solar Cell
Organic Electronics
Surface Science
Metrics
H-Index
i10 Index
Citation Counts
78
151
24,679
* Total H IndexRankings
Ranking Based On Selection: 27
Theoretical Chemistry
Computational Chemistry
Metrics
H-Index
i10 Index
Citation Counts
78
331
29,119
* Total H IndexRankings
Ranking Based On Selection: 28
theoretical chemistry
catalytic chemistry
Metrics
H-Index
i10 Index
Citation Counts
75
319
90,191
* Total H IndexRankings
Ranking Based On Selection: 29
UBL3
synuclein
dementia
imaging mass spectrometry
Metrics
H-Index
i10 Index
Citation Counts
74
256
21,883
* Total H IndexRankings
Ranking Based On Selection: 30
Catalysis，Physical Chemistry，Solid
Metrics
H-Index
i10 Index
Citation Counts
73
319
19,860
* Total H IndexRankings
Ranking Based On Selection: 31
organometallic chemistry
Metrics
H-Index
i10 Index
Citation Counts
73
297
18,329
* Total H IndexRankings
Ranking Based On Selection: 32
Solid State Chemistry
Ceramics
Solid State Ionics
Crystal Structure
Crystallography
Metrics
H-Index
i10 Index
Citation Counts
73
243
19,652
* Total H IndexRankings
Ranking Based On Selection: 33
Crystallography
Powder diffraction
Structure analysis
Metrics
H-Index
i10 Index
Citation Counts
73
222
56,816
* Total H IndexRankings
Ranking Based On Selection: 34
Chemistry
Photochemistry
Material Chemistry
Metrics
H-Index
i10 Index
Citation Counts
71
303
20,858
* Total H IndexRankings
Ranking Based On Selection: 35
Polymer Chemistry
Metrics
H-Index
i10 Index
Citation Counts
71
444
23,120
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* Total H IndexRankings
Ranking Based On Selection: 36
IC design
Metrics
H-Index
i10 Index
Citation Counts
70
393
19,905
* Total H IndexRankings
Ranking Based On Selection: 37
organic chemistry
Metrics
H-Index
i10 Index
Citation Counts
69
316
17,712
* Total H IndexRankings
Ranking Based On Selection: 38
Catalysis
Chemistry
Chemical engineering
Green Chemistry
Biomass
Metrics
H-Index
i10 Index
Citation Counts
69
151
14,148
* Total H IndexRankings
Ranking Based On Selection: 39
Inorganic Chemistry
Metal-Organic Frameworks
Glasses
Metrics
H-Index
i10 Index
Citation Counts
68
156
19,338
* Total H IndexRankings
Ranking Based On Selection: 40
organic chemistry
inorganic chemistry
organometallic chemistry
porphyrins
aromaticity
Metrics
H-Index
i10 Index
Citation Counts
68
293
16,756
* Total H IndexRankings
Ranking Based On Selection: 41
structural organic chemistry
Metrics
H-Index
i10 Index
Citation Counts
67
111
13,655
* Total H IndexRankings
Ranking Based On Selection: 42
Theoretical Chemistry
Quantum Chemistry
Photochemistry
Catalysis
Metrics
H-Index
i10 Index
Citation Counts
67
305
223,046
* Total H IndexRankings
Ranking Based On Selection: 43
Chitin
Chitosan
Polysaccharides
Biomaterials
Metrics
H-Index
i10 Index
Citation Counts
67
129
20,350
* Total H IndexRankings
Ranking Based On Selection: 44
parity
helicity
symmetry breaking
homochirality
polarized light
Metrics
H-Index
i10 Index
Citation Counts
67
268
14,115
* Total H IndexRankings
Ranking Based On Selection: 45
Chemistry
Quantum Chemistry
Physical Chemistry
Metrics
H-Index
i10 Index
Citation Counts
66
208
52,433
* Total H IndexRankings
Ranking Based On Selection: 46
Optical materials
Powder technology
Ceramics science
Materials chemistry
Metrics
H-Index
i10 Index
Citation Counts
66
262
15,067
* Total H IndexRankings
Ranking Based On Selection: 47
Main Group Chemistry
Metrics
H-Index
i10 Index
Citation Counts
66
359
18,342
* Total H IndexRankings
Ranking Based On Selection: 48
Polymer Colloids
Metrics
H-Index
i10 Index
Citation Counts
66
284
15,832
* Total H IndexRankings
Ranking Based On Selection: 49
Organic Chemistry
Metrics
H-Index
i10 Index
Citation Counts
65
257
17,866
* Total H IndexRankings
Ranking Based On Selection: 50
Organic Synthesis
Glycoscience
Innate Immunity
Chemical Biology
Peptide Chemistry
Metrics
H-Index
i10 Index
Citation Counts
65
278
22,911
Luis K Ono
Metrics
H-Index
i10-Index
Citation Counts
78
151
24,679
Catalysis
Nanoparticles
Solar Cell
Organic Electronics
Surface Science
Kimihiko Hirao|k hirao
Kyoto University
Kyoto, Japan
Metrics
H-Index
i10-Index
Citation Counts
78
331
29,119
Theoretical Chemistry
Computational Chemistry
Jun Ya Hasegawa
Hokkaido University
Sapporo, Japan
Metrics
H-Index
i10-Index
Citation Counts
75
319
90,191
theoretical chemistry
catalytic chemistry
Mitsutoshi Setou
Hamamatsu University School of Medicine
Hamamatsu, Japan
Metrics
H-Index
i10-Index
Citation Counts
74
256
21,883
UBL3
synuclein
dementia
imaging mass spectrometry
田中庸裕|Tsunehiro Tanaka
Kyoto University
Kyoto, Japan
Metrics
H-Index
i10-Index
Citation Counts
73
319
19,860
Catalysis，Physical Chemistry，Solid
Munetaka Akita
Metrics
H-Index
i10-Index
Citation Counts
73
297
18,329
Masatomo Yashima
Metrics
H-Index
i10-Index
Citation Counts
73
243
19,652
Solid State Chemistry
Ceramics
Solid State Ionics
Crystal Structure
Crystallography
Crystallography
Powder diffraction
Structure analysis
Tsuyoshi Kawai
Metrics
H-Index
i10-Index
Citation Counts
71
303
20,858
Chemistry
Photochemistry
Material Chemistry
Hiroyuki Nishide
Waseda University
Tokyo, Japan
Metrics
H-Index
i10-Index
Citation Counts
71
444
23,120
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Tadahiro Kuroda
Keio University
Tokyo, Japan
Metrics
H-Index
i10-Index
Citation Counts
70
393
19,905
Ken Tanaka
Metrics
H-Index
i10-Index
Citation Counts
69
316
17,712
Tomoo Mizugaki
Osaka University
Suita, Japan
Metrics
H-Index
i10-Index
Citation Counts
69
151
14,148
Catalysis
Chemistry
Chemical engineering
Green Chemistry
Biomass
Satoshi Horike
Kyoto University
Kyoto, Japan
Metrics
H-Index
i10-Index
Citation Counts
68
156
19,338
Inorganic Chemistry
Metal-Organic Frameworks
Glasses
Hiroshi Shinokubo
Nagoya University
Nagoya, Japan
Metrics
H-Index
i10-Index
Citation Counts
68
293
16,756
organic chemistry
inorganic chemistry
organometallic chemistry
porphyrins
aromaticity
Yasutomo Segawa
Institute for Molecular Science
Okazaki, Japan
Metrics
H-Index
i10-Index
Citation Counts
67
111
13,655
Masahiro Ehara
Institute for Molecular Science
Okazaki, Japan
Metrics
H-Index
i10-Index
Citation Counts
67
305
223,046
Theoretical Chemistry
Quantum Chemistry
Photochemistry
Catalysis
Hiroshi Tamura
Kansai University
Suita, Japan
Metrics
H-Index
i10-Index
Citation Counts
67
129
20,350
Chitin
Chitosan
Polysaccharides
Biomaterials
Michiya Fujiki
Metrics
H-Index
i10-Index
Citation Counts
67
268
14,115
parity
helicity
symmetry breaking
homochirality
polarized light
Masahiko Hada
Tokyo Metropolitan University
Hachioji, Japan
Metrics
H-Index
i10-Index
Citation Counts
66
208
52,433
Chemistry
Quantum Chemistry
Physical Chemistry
Ji-Guang Li
Metrics
H-Index
i10-Index
Citation Counts
66
262
15,067
Optical materials
Powder technology
Ceramics science
Materials chemistry
Norihiro Tokitoh
Kyoto University
Kyoto, Japan
Metrics
H-Index
i10-Index
Citation Counts
66
359
18,342
Hajime Ito
Hokkaido University
Sapporo, Japan
Metrics
H-Index
i10-Index
Citation Counts
65
257
17,866
Organic Synthesis
Glycoscience
Innate Immunity
Chemical Biology
Peptide Chemistry