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University, Subject, Country, Region, World
Institute of Science Tokyo 1.411 Scientists Subject Rankings
The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 211 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 5 years. As of Jan 03, 2026, 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 (1.131.752) 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 Index Rankings
Rankings
66
World Rank
2
Country Rank
1
University
Ranking Based On Selection:
1
* Total H Index Rankings
Rankings
1,495
World Rank
17
Country Rank
2
University
Ranking Based On Selection:
2
* Total H Index Rankings
Rankings
7,524
World Rank
90
Country Rank
3
University
Ranking Based On Selection:
3
* Total H Index Rankings
Rankings
7,756
World Rank
93
Country Rank
4
University
Ranking Based On Selection:
4
* Total H Index Rankings
Rankings
11,098
World Rank
142
Country Rank
5
University
Ranking Based On Selection:
5
Natural Sciences / Chemical Sciences
Artificial photosynthesis | CO2 fixation | Heterogeneous photocatalysis | Solar energy conversio
Artificial photosynthesis | CO2 fixation | Heterogeneous photocatalysis | Solar energy conversio
H-Index Metrics
-
H-Index99
-
i10 Index285
-
Citation Counts61,875
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* Total H Index Rankings
Rankings
15,024
World Rank
202
Country Rank
6
University
Ranking Based On Selection:
6
Natural Sciences / Molecular Biology & Genetics
Gene expression | Chromatin regulation | Chromosome dynamics | Epigenetics | Histone modificatio
Gene expression | Chromatin regulation | Chromosome dynamics | Epigenetics | Histone modificatio
H-Index Metrics
-
H-Index91
-
i10 Index245
-
Citation Counts29,880
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* Total H Index Rankings
Rankings
18,501
World Rank
266
Country Rank
7
University
Ranking Based On Selection:
7
* Total H Index Rankings
Rankings
24,572
World Rank
377
Country Rank
8
University
Ranking Based On Selection:
8
* Total H Index Rankings
Rankings
29,272
World Rank
442
Country Rank
9
University
Ranking Based On Selection:
9
* Total H Index Rankings
Rankings
29,633
World Rank
455
Country Rank
10
University
Ranking Based On Selection:
10
* Total H Index Rankings
Rankings
30,076
World Rank
469
Country Rank
11
University
Ranking Based On Selection:
11
Engineering & Technology / Mechanical Engineering
computational mechanics | material failure | composites | solid mechanics | topology optimizatio
computational mechanics | material failure | composites | solid mechanics | topology optimizatio
H-Index Metrics
-
H-Index74
-
i10 Index256
-
Citation Counts15,446
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* Total H Index Rankings
Rankings
32,051
World Rank
493
Country Rank
12
University
Ranking Based On Selection:
12
Natural Sciences / Chemical Sciences
Ionics | Structural Science | Proton Conductor | Oxide_Ion_Conductor | Ceramic Material
Ionics | Structural Science | Proton Conductor | Oxide_Ion_Conductor | Ceramic Material
H-Index Metrics
-
H-Index73
-
i10 Index253
-
Citation Counts19,065
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* Total H Index Rankings
Rankings
33,597
World Rank
524
Country Rank
13
University
Ranking Based On Selection:
13
* Total H Index Rankings
Rankings
34,871
World Rank
551
Country Rank
14
University
Ranking Based On Selection:
14
Engineering & Technology / Earth Sciences
Isotope Biogeochemistry | Environmental Chemistry | Isotopomer | Isotopologu
Isotope Biogeochemistry | Environmental Chemistry | Isotopomer | Isotopologu
H-Index Metrics
-
H-Index71
-
i10 Index304
-
Citation Counts18,616
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* Total H Index Rankings
Rankings
36,680
World Rank
587
Country Rank
15
University
Ranking Based On Selection:
15
* Total H Index Rankings
Rankings
36,996
World Rank
600
Country Rank
16
University
Ranking Based On Selection:
16
Engineering & Technology / Chemical Engineering
electrochemistry | bioelectrochemistry | energy chemistry | analytical electrochemistr
electrochemistry | bioelectrochemistry | energy chemistry | analytical electrochemistr
H-Index Metrics
-
H-Index70
-
i10 Index340
-
Citation Counts16,878
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* Total H Index Rankings
Rankings
38,386
World Rank
623
Country Rank
17
University
Ranking Based On Selection:
17
* Total H Index Rankings
Rankings
39,251
World Rank
638
Country Rank
18
University
Ranking Based On Selection:
18
Engineering & Technology / Civil Engineering
water resources | hydrology | climate change | monsoon | civil engineerin
water resources | hydrology | climate change | monsoon | civil engineerin
H-Index Metrics
-
H-Index68
-
i10 Index167
-
Citation Counts37,235
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* Total H Index Rankings
Rankings
39,972
World Rank
655
Country Rank
19
University
Ranking Based On Selection:
19
Agriculture & Forestry / Plant Science
Plant lipids | Plant hormones | Microalgae | Colonization of land by plants | Biofue
Plant lipids | Plant hormones | Microalgae | Colonization of land by plants | Biofue
H-Index Metrics
-
H-Index68
-
i10 Index166
-
Citation Counts16,113
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* Total H Index Rankings
Rankings
40,527
World Rank
678
Country Rank
20
University
Ranking Based On Selection:
20
* Total H Index Rankings
Rankings
40,545
World Rank
679
Country Rank
21
University
Ranking Based On Selection:
21
Engineering & Technology / Metallurgical & Materials Engineering
Liquid Crystal | Polymer | Optical Material | Material Engineerin
Liquid Crystal | Polymer | Optical Material | Material Engineerin
H-Index Metrics
-
H-Index68
-
i10 Index350
-
Citation Counts20,164
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* Total H Index Rankings
Rankings
41,790
World Rank
695
Country Rank
22
University
Ranking Based On Selection:
22
* Total H Index Rankings
Rankings
43,991
World Rank
730
Country Rank
23
University
Ranking Based On Selection:
23
Natural Sciences / Chemical Sciences
Polymer Science | Polymer Spectroscopy | Polyimides | Fluoropolymers | DFT calculatio
Polymer Science | Polymer Spectroscopy | Polyimides | Fluoropolymers | DFT calculatio
H-Index Metrics
-
H-Index66
-
i10 Index251
-
Citation Counts14,017
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* Total H Index Rankings
Rankings
44,177
World Rank
736
Country Rank
24
University
Ranking Based On Selection:
24
* Total H Index Rankings
Rankings
47,493
World Rank
793
Country Rank
25
University
Ranking Based On Selection:
25
Engineering & Technology / Metallurgical & Materials Engineering
Computational materials science | first principles calculations | semiconductors | defect
Computational materials science | first principles calculations | semiconductors | defect
H-Index Metrics
-
H-Index64
-
i10 Index156
-
Citation Counts21,869
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Premium Data
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