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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 02, 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
3,853
World Rank
27
Country Rank
11
University
Ranking Based On Selection:
1
Engineering & Technology / Energy Engineering
energy storage materials | graphene 2D materials | photonics | hybrid perovskite
energy storage materials | graphene 2D materials | photonics | hybrid perovskite
H-Index Metrics
-
H-Index130
-
i10 Index455
-
Citation Counts69,594
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* Total H Index Rankings
Rankings
5,865
World Rank
43
Country Rank
15
University
Ranking Based On Selection:
2
Engineering & Technology / Energy Engineering
Energy storage | Batteries | E-waste/Batteries recycling | Sustainability | Circular econom
Energy storage | Batteries | E-waste/Batteries recycling | Sustainability | Circular econom
H-Index Metrics
-
H-Index117
-
i10 Index408
-
Citation Counts45,487
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* Total H Index Rankings
Rankings
6,860
World Rank
10
Country Rank
2
University
Ranking Based On Selection:
3
Engineering & Technology / Energy Engineering
Renewable Energy | Power Electronics | Drives | Electrical Engineerin
Renewable Energy | Power Electronics | Drives | Electrical Engineerin
H-Index Metrics
-
H-Index112
-
i10 Index496
-
Citation Counts49,614
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* Total H Index Rankings
Rankings
13,702
World Rank
112
Country Rank
40
University
Ranking Based On Selection:
4
Engineering & Technology / Energy Engineering
Microgrids | Power System Stability | Smart Grid | Data-Analytic
Microgrids | Power System Stability | Smart Grid | Data-Analytic
H-Index Metrics
-
H-Index93
-
i10 Index332
-
Citation Counts26,944
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* Total H Index Rankings
Rankings
14,316
World Rank
4
Country Rank
1
University
Ranking Based On Selection:
5
Engineering & Technology / Energy Engineering
Computational Engineering | Biomorphic Intelligence | Bioinspired Material Design | 3D Printin
Computational Engineering | Biomorphic Intelligence | Bioinspired Material Design | 3D Printin
H-Index Metrics
-
H-Index92
-
i10 Index280
-
Citation Counts26,010
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* Total H Index Rankings
Rankings
18,849
World Rank
30
Country Rank
5
University
Ranking Based On Selection:
6
Engineering & Technology / Energy Engineering
Energy Finance | Green Finance | Climate Change | Equity Market | Sustainable Developmen
Energy Finance | Green Finance | Climate Change | Equity Market | Sustainable Developmen
H-Index Metrics
-
H-Index85
-
i10 Index192
-
Citation Counts24,896
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* Total H Index Rankings
Rankings
21,583
World Rank
165
Country Rank
84
University
Ranking Based On Selection:
7
Engineering & Technology / Energy Engineering
Energy Studies | Performance Indicators | Decomposition Analysis | LMD
Energy Studies | Performance Indicators | Decomposition Analysis | LMD
H-Index Metrics
-
H-Index82
-
i10 Index153
-
Citation Counts38,616
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* Total H Index Rankings
Rankings
26,877
World Rank
206
Country Rank
110
University
Ranking Based On Selection:
8
Engineering & Technology / Energy Engineering
Energy and thermal systems | microscale combustion | micro thrusters and propulsion | energy managemen
Energy and thermal systems | microscale combustion | micro thrusters and propulsion | energy managemen
H-Index Metrics
-
H-Index77
-
i10 Index172
-
Citation Counts19,010
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* Total H Index Rankings
Rankings
39,801
World Rank
291
Country Rank
154
University
Ranking Based On Selection:
9
* Total H Index Rankings
Rankings
41,734
World Rank
312
Country Rank
165
University
Ranking Based On Selection:
10
Engineering & Technology / Energy Engineering
Solar cells | supercapacitors | Water Splitting Materials and Systems | Transparent Semiconductors | Electronic and Functional Mate
Solar cells | supercapacitors | Water Splitting Materials and Systems | Transparent Semiconductors | Electronic and Functional Mate
H-Index Metrics
-
H-Index67
-
i10 Index198
-
Citation Counts19,142
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* Total H Index Rankings
Rankings
42,615
World Rank
317
Country Rank
170
University
Ranking Based On Selection:
11
Engineering & Technology / Energy Engineering
Energy System Modeling | Input-Output Analysis | Decomposition Analysis | Global Value Chain
Energy System Modeling | Input-Output Analysis | Decomposition Analysis | Global Value Chain
H-Index Metrics
-
H-Index66
-
i10 Index155
-
Citation Counts16,066
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* Total H Index Rankings
Rankings
51,295
World Rank
143
Country Rank
23
University
Ranking Based On Selection:
12
Engineering & Technology / Energy Engineering
Energy Engineering | Renewable Energy | Hydrogen Energy | Energy Policy | Electric Vehicl
Energy Engineering | Renewable Energy | Hydrogen Energy | Energy Policy | Electric Vehicl
H-Index Metrics
-
H-Index62
-
i10 Index168
-
Citation Counts15,341
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* Total H Index Rankings
Rankings
51,461
World Rank
386
Country Rank
10
University
Ranking Based On Selection:
13
* Total H Index Rankings
Rankings
51,917
World Rank
392
Country Rank
207
University
Ranking Based On Selection:
14
* Total H Index Rankings
Rankings
71,348
World Rank
79
Country Rank
4
University
Ranking Based On Selection:
15
Engineering & Technology / Energy Engineering
Energy and environment management | Renewable Energy | Solar Energy | Waste Managemen
Energy and environment management | Renewable Energy | Solar Energy | Waste Managemen
H-Index Metrics
-
H-Index55
-
i10 Index150
-
Citation Counts10,741
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* Total H Index Rankings
Rankings
78,964
World Rank
45
Country Rank
1
University
Ranking Based On Selection:
16
* Total H Index Rankings
Rankings
80,646
World Rank
578
Country Rank
307
University
Ranking Based On Selection:
17
* Total H Index Rankings
Rankings
92,316
World Rank
113
Country Rank
3
University
Ranking Based On Selection:
18
Engineering & Technology / Energy Engineering
Nanotech | Supercapacitors | Batteries | Electrocatalysis | Graphen
Nanotech | Supercapacitors | Batteries | Electrocatalysis | Graphen
H-Index Metrics
-
H-Index50
-
i10 Index155
-
Citation Counts8,159
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* Total H Index Rankings
Rankings
96,776
World Rank
685
Country Rank
229
University
Ranking Based On Selection:
19
Engineering & Technology / Energy Engineering
Solid Batteries | Electrochemistry | Polymer Electrolytes | Hydrogels | Ionogel
Solid Batteries | Electrochemistry | Polymer Electrolytes | Hydrogels | Ionogel
H-Index Metrics
-
H-Index49
-
i10 Index67
-
Citation Counts13,993
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* Total H Index Rankings
Rankings
101,545
World Rank
721
Country Rank
378
University
Ranking Based On Selection:
20
Engineering & Technology / Energy Engineering
Power System Automation | Cyber-physical Energy System
Power System Automation | Cyber-physical Energy System
H-Index Metrics
-
H-Index48
-
i10 Index112
-
Citation Counts7,283
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* Total H Index Rankings
Rankings
102,310
World Rank
11
Country Rank
6
University
Ranking Based On Selection:
21
Engineering & Technology / Energy Engineering
Energy | Functional Materials | Fuel Cells | Biomass | Photocatalys
Energy | Functional Materials | Fuel Cells | Biomass | Photocatalys
H-Index Metrics
-
H-Index48
-
i10 Index140
-
Citation Counts12,525
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* Total H Index Rankings
Rankings
112,641
World Rank
148
Country Rank
1
University
Ranking Based On Selection:
22
Engineering & Technology / Energy Engineering
Algae Biofuels | Energy Engineering | Food Microbiology | Bioprocess Technology | Biotechnolog
Algae Biofuels | Energy Engineering | Food Microbiology | Bioprocess Technology | Biotechnolog
H-Index Metrics
-
H-Index46
-
i10 Index145
-
Citation Counts6,697
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* Total H Index Rankings
Rankings
113,602
World Rank
150
Country Rank
10
University
Ranking Based On Selection:
23
Engineering & Technology / Energy Engineering
Energy Engineering | Biomass Conversion | Aerosol Technolog
Energy Engineering | Biomass Conversion | Aerosol Technolog
H-Index Metrics
-
H-Index46
-
i10 Index180
-
Citation Counts7,405
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* Total H Index Rankings
Rankings
114,809
World Rank
499
Country Rank
41
University
Ranking Based On Selection:
24
* Total H Index Rankings
Rankings
118,436
World Rank
816
Country Rank
20
University
Ranking Based On Selection:
25
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