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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
2,294
World Rank
77
Country Rank
2
University
Ranking Based On Selection:
1
Engineering & Technology / Energy Engineering
Energy storage | Li-S batteries | Lithium metal anode | Carbon nanomaterials | Fluidized be
Energy storage | Li-S batteries | Lithium metal anode | Carbon nanomaterials | Fluidized be
H-Index Metrics
-
H-Index147
-
i10 Index401
-
Citation Counts76,758
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* Total H Index Rankings
Rankings
3,491
World Rank
3
Country Rank
2
University
Ranking Based On Selection:
2
Engineering & Technology / Energy Engineering
Renewable Energy | Energy Storage Systems | CAD and Design | Smart Material
Renewable Energy | Energy Storage Systems | CAD and Design | Smart Material
H-Index Metrics
-
H-Index133
-
i10 Index514
-
Citation Counts61,368
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* Total H Index Rankings
Rankings
5,423
World Rank
222
Country Rank
2
University
Ranking Based On Selection:
3
Engineering & Technology / Energy Engineering
solar energy conversion materials (potocatalysis | photoelectrochemical | solar cells
solar energy conversion materials (potocatalysis | photoelectrochemical | solar cells
H-Index Metrics
-
H-Index119
-
i10 Index756
-
Citation Counts76,529
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* Total H Index Rankings
Rankings
5,810
World Rank
240
Country Rank
2
University
Ranking Based On Selection:
4
* Total H Index Rankings
Rankings
6,878
World Rank
297
Country Rank
2
University
Ranking Based On Selection:
5
* Total H Index Rankings
Rankings
7,598
World Rank
10
Country Rank
1
University
Ranking Based On Selection:
6
Engineering & Technology / Energy Engineering
• Renewable Energy Systems. • Desiccant Dehumidification Systems. • Refrigeration and Ai
• Renewable Energy Systems. • Desiccant Dehumidification Systems. • Refrigeration and Ai
H-Index Metrics
-
H-Index109
-
i10 Index385
-
Citation Counts35,053
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* Total H Index Rankings
Rankings
8,762
World Rank
409
Country Rank
16
University
Ranking Based On Selection:
7
Engineering & Technology / Energy Engineering
Energy materials | Energy storage and conversion | MOFs | Phase change materials | Nanoporous material
Energy materials | Energy storage and conversion | MOFs | Phase change materials | Nanoporous material
H-Index Metrics
-
H-Index105
-
i10 Index276
-
Citation Counts43,560
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* Total H Index Rankings
Rankings
10,170
World Rank
476
Country Rank
10
University
Ranking Based On Selection:
8
Engineering & Technology / Energy Engineering
Heat transfer | Energy conservation | Electronics cooling | Porous media | Nano-scale heat transfe
Heat transfer | Energy conservation | Electronics cooling | Porous media | Nano-scale heat transfe
H-Index Metrics
-
H-Index101
-
i10 Index948
-
Citation Counts58,832
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* Total H Index Rankings
Rankings
10,968
World Rank
519
Country Rank
12
University
Ranking Based On Selection:
9
Engineering & Technology / Energy Engineering
Thermal Sciences | Heat Transfer | Phase-Change Heat Transfer | Thermal Storage | Thermal Managemen
Thermal Sciences | Heat Transfer | Phase-Change Heat Transfer | Thermal Storage | Thermal Managemen
H-Index Metrics
-
H-Index99
-
i10 Index284
-
Citation Counts45,371
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* Total H Index Rankings
Rankings
10,970
World Rank
520
Country Rank
13
University
Ranking Based On Selection:
10
Engineering & Technology / Energy Engineering
Energy Storage Materials | Lithium/Sodium Ion Batteries | Supercapacitor
Energy Storage Materials | Lithium/Sodium Ion Batteries | Supercapacitor
H-Index Metrics
-
H-Index99
-
i10 Index233
-
Citation Counts30,204
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* Total H Index Rankings
Rankings
12,282
World Rank
579
Country Rank
19
University
Ranking Based On Selection:
11
* Total H Index Rankings
Rankings
12,693
World Rank
605
Country Rank
11
University
Ranking Based On Selection:
12
Engineering & Technology / Energy Engineering
Energy chemistry | Lithium-sulfur battery | Lithium metal batter
Energy chemistry | Lithium-sulfur battery | Lithium metal batter
H-Index Metrics
-
H-Index95
-
i10 Index169
-
Citation Counts28,935
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* Total H Index Rankings
Rankings
13,708
World Rank
656
Country Rank
6
University
Ranking Based On Selection:
13
* Total H Index Rankings
Rankings
14,242
World Rank
685
Country Rank
10
University
Ranking Based On Selection:
14
* Total H Index Rankings
Rankings
14,829
World Rank
723
Country Rank
6
University
Ranking Based On Selection:
15
Engineering & Technology / Energy Engineering
Energy Storage Materials | Carbon | Supercapacitor | Batter
Energy Storage Materials | Carbon | Supercapacitor | Batter
H-Index Metrics
-
H-Index91
-
i10 Index264
-
Citation Counts29,703
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* Total H Index Rankings
Rankings
14,851
World Rank
731
Country Rank
16
University
Ranking Based On Selection:
16
* Total H Index Rankings
Rankings
14,935
World Rank
748
Country Rank
8
University
Ranking Based On Selection:
17
Engineering & Technology / Energy Engineering
Solar Energy | Catalysis | Photovoltaic | Functional Material
Solar Energy | Catalysis | Photovoltaic | Functional Material
H-Index Metrics
-
H-Index91
-
i10 Index254
-
Citation Counts37,048
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* Total H Index Rankings
Rankings
15,419
World Rank
762
Country Rank
62
University
Ranking Based On Selection:
18
* Total H Index Rankings
Rankings
21,376
World Rank
1,101
Country Rank
3
University
Ranking Based On Selection:
19
* Total H Index Rankings
Rankings
21,377
World Rank
1,102
Country Rank
80
University
Ranking Based On Selection:
20
Engineering & Technology / Energy Engineering
Power system planning | Low carbon | Multi-energy systems | Energy Interne
Power system planning | Low carbon | Multi-energy systems | Energy Interne
H-Index Metrics
-
H-Index82
-
i10 Index286
-
Citation Counts22,237
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* Total H Index Rankings
Rankings
22,328
World Rank
1,162
Country Rank
18
University
Ranking Based On Selection:
21
Engineering & Technology / Energy Engineering
Flue gas cleaning | Renewable energy | Waste managemen
Flue gas cleaning | Renewable energy | Waste managemen
H-Index Metrics
-
H-Index81
-
i10 Index212
-
Citation Counts18,819
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* Total H Index Rankings
Rankings
22,568
World Rank
170
Country Rank
3
University
Ranking Based On Selection:
22
Engineering & Technology / Energy Engineering
Solar Energy | Solar Cooling | Passive Buildings | Exergy Analysis | Finite Time Thermodynamic
Solar Energy | Solar Cooling | Passive Buildings | Exergy Analysis | Finite Time Thermodynamic
H-Index Metrics
-
H-Index81
-
i10 Index286
-
Citation Counts26,775
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* Total H Index Rankings
Rankings
23,263
World Rank
84
Country Rank
8
University
Ranking Based On Selection:
23
Engineering & Technology / Energy Engineering
Solar energy | nanofluid | heat transfer | energy optimizatio
Solar energy | nanofluid | heat transfer | energy optimizatio
H-Index Metrics
-
H-Index80
-
i10 Index220
-
Citation Counts19,396
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* Total H Index Rankings
Rankings
23,345
World Rank
1,229
Country Rank
19
University
Ranking Based On Selection:
24
Engineering & Technology / Energy Engineering
Solar energy conversion | Photocatalysis | Water splitting | Nanostructured material
Solar energy conversion | Photocatalysis | Water splitting | Nanostructured material
H-Index Metrics
-
H-Index80
-
i10 Index217
-
Citation Counts30,140
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* Total H Index Rankings
Rankings
24,272
World Rank
1,272
Country Rank
14
University
Ranking Based On Selection:
25
Engineering & Technology / Energy Engineering
Perovskite solar cells/Perovskite LEDs/photodetectors | Quantum-dots LEDs | Organic solar cells | OLEDs | flexible electronic
Perovskite solar cells/Perovskite LEDs/photodetectors | Quantum-dots LEDs | Organic solar cells | OLEDs | flexible electronic
H-Index Metrics
-
H-Index79
-
i10 Index166
-
Citation Counts22,670
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Premium Data
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Track your performance in real time — benchmark, compare, and improve. Stay ahead with instant insights and global peer comparisons.
Attract world-class talent across 211 disciplines. Find, connect, and recruit the brightest minds worldwide.
Unlock researcher and institutional impact with transparent contribution scores. Recognize, measure, and reward academic excellence at every level.
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Advancing global partnerships, mobility, and international visibility.
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