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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 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
3,855
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
5,868
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
13,707
World Rank
112
Country Rank
40
University
Ranking Based On Selection:
3
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
21,592
World Rank
165
Country Rank
84
University
Ranking Based On Selection:
4
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
26,885
World Rank
206
Country Rank
110
University
Ranking Based On Selection:
5
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
39,813
World Rank
291
Country Rank
154
University
Ranking Based On Selection:
6
* Total H Index Rankings
Rankings
41,747
World Rank
312
Country Rank
165
University
Ranking Based On Selection:
7
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
42,625
World Rank
317
Country Rank
170
University
Ranking Based On Selection:
8
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
51,476
World Rank
386
Country Rank
10
University
Ranking Based On Selection:
9
* Total H Index Rankings
Rankings
51,928
World Rank
392
Country Rank
207
University
Ranking Based On Selection:
10
* Total H Index Rankings
Rankings
80,668
World Rank
578
Country Rank
307
University
Ranking Based On Selection:
11
* Total H Index Rankings
Rankings
96,794
World Rank
685
Country Rank
229
University
Ranking Based On Selection:
12
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
101,564
World Rank
721
Country Rank
378
University
Ranking Based On Selection:
13
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
118,465
World Rank
816
Country Rank
20
University
Ranking Based On Selection:
14
* Total H Index Rankings
Rankings
124,776
World Rank
863
Country Rank
447
University
Ranking Based On Selection:
15
Engineering & Technology / Energy Engineering
Energy material | Thin film | Perovskite solar cell | Organic photovoltaic | Redox flow batter
Energy material | Thin film | Perovskite solar cell | Organic photovoltaic | Redox flow batter
H-Index Metrics
-
H-Index44
-
i10 Index74
-
Citation Counts6,126
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* Total H Index Rankings
Rankings
131,641
World Rank
908
Country Rank
302
University
Ranking Based On Selection:
16
* Total H Index Rankings
Rankings
147,929
World Rank
1,009
Country Rank
344
University
Ranking Based On Selection:
17
* Total H Index Rankings
Rankings
162,955
World Rank
1,098
Country Rank
546
University
Ranking Based On Selection:
18
Engineering & Technology / Energy Engineering
Renewable Energy | Optimization | Solar Energy | Electrical Engineerin
Renewable Energy | Optimization | Solar Energy | Electrical Engineerin
H-Index Metrics
-
H-Index39
-
i10 Index56
-
Citation Counts3,699
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* Total H Index Rankings
Rankings
172,379
World Rank
1,143
Country Rank
396
University
Ranking Based On Selection:
19
* Total H Index Rankings
Rankings
177,522
World Rank
1,172
Country Rank
575
University
Ranking Based On Selection:
20
* Total H Index Rankings
Rankings
181,633
World Rank
1,189
Country Rank
585
University
Ranking Based On Selection:
21
Engineering & Technology / Energy Engineering
Energy Storage | Catalyst | MOF | 3D printing | Nanomateria
Energy Storage | Catalyst | MOF | 3D printing | Nanomateria
H-Index Metrics
-
H-Index37
-
i10 Index51
-
Citation Counts7,719
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* Total H Index Rankings
Rankings
191,933
World Rank
1,244
Country Rank
431
University
Ranking Based On Selection:
22
Engineering & Technology / Energy Engineering
multi-energy systems | AI+Energy | green hydrogen | resilience | smart grids and ship
multi-energy systems | AI+Energy | green hydrogen | resilience | smart grids and ship
H-Index Metrics
-
H-Index36
-
i10 Index57
-
Citation Counts4,569
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* Total H Index Rankings
Rankings
204,499
World Rank
1,326
Country Rank
453
University
Ranking Based On Selection:
23
Engineering & Technology / Energy Engineering
Solar energy conversion | Photocatalysis | Photoelectrocatalysi
Solar energy conversion | Photocatalysis | Photoelectrocatalysi
H-Index Metrics
-
H-Index35
-
i10 Index46
-
Citation Counts4,145
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* Total H Index Rankings
Rankings
229,503
World Rank
1,478
Country Rank
501
University
Ranking Based On Selection:
24
Engineering & Technology / Energy Engineering
solar energy | photoelectrochemical water splitting | biomass/plastic waste upgradin
solar energy | photoelectrochemical water splitting | biomass/plastic waste upgradin
H-Index Metrics
-
H-Index33
-
i10 Index49
-
Citation Counts3,668
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* Total H Index Rankings
Rankings
241,825
World Rank
1,536
Country Rank
742
University
Ranking Based On Selection:
25
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