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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
3,403
World Rank
18
Country Rank
13
University
Ranking Based On Selection:
1
Engineering & Technology / Chemical Engineering
aggregation-induced-emission | conjugated polymer | conjugated polyelectrolyte | sensing and imaging | cancer therap
aggregation-induced-emission | conjugated polymer | conjugated polyelectrolyte | sensing and imaging | cancer therap
H-Index Metrics
-
H-Index134
-
i10 Index554
-
Citation Counts69,021
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* Total H Index Rankings
Rankings
5,261
World Rank
9
Country Rank
2
University
Ranking Based On Selection:
2
Engineering & Technology / Chemical Engineering
Reaction Engineering & Catalysis | Air Pollution and Waste Water Control Engineering | Fuel Technology | Nanoscience & Nanotechno
Reaction Engineering & Catalysis | Air Pollution and Waste Water Control Engineering | Fuel Technology | Nanoscience & Nanotechno
H-Index Metrics
-
H-Index120
-
i10 Index558
-
Citation Counts56,467
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* Total H Index Rankings
Rankings
5,730
World Rank
42
Country Rank
22
University
Ranking Based On Selection:
3
* Total H Index Rankings
Rankings
5,971
World Rank
44
Country Rank
23
University
Ranking Based On Selection:
4
Engineering & Technology / Chemical Engineering
Biomaterials | Nanotechnology | Surface Science and Engineerin
Biomaterials | Nanotechnology | Surface Science and Engineerin
H-Index Metrics
-
H-Index117
-
i10 Index588
-
Citation Counts50,290
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* Total H Index Rankings
Rankings
7,909
World Rank
57
Country Rank
29
University
Ranking Based On Selection:
5
Engineering & Technology / Chemical Engineering
nanoclusters | metal nanomaterials | cluster chemistry | nanomedicin
nanoclusters | metal nanomaterials | cluster chemistry | nanomedicin
H-Index Metrics
-
H-Index108
-
i10 Index245
-
Citation Counts39,197
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* Total H Index Rankings
Rankings
8,743
World Rank
63
Country Rank
33
University
Ranking Based On Selection:
6
Engineering & Technology / Chemical Engineering
Synchrotron Radiation for Materials Science Application
Synchrotron Radiation for Materials Science Application
H-Index Metrics
-
H-Index105
-
i10 Index341
-
Citation Counts38,940
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* Total H Index Rankings
Rankings
11,823
World Rank
93
Country Rank
45
University
Ranking Based On Selection:
7
Engineering & Technology / Chemical Engineering
Porous Materials | Membranes | Gas Separation | Nanofiltration | Chemical Sensin
Porous Materials | Membranes | Gas Separation | Nanofiltration | Chemical Sensin
H-Index Metrics
-
H-Index97
-
i10 Index232
-
Citation Counts32,538
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* Total H Index Rankings
Rankings
13,324
World Rank
110
Country Rank
55
University
Ranking Based On Selection:
8
Engineering & Technology / Chemical Engineering
Particle Technology | Drug Delivery System | Biomass Gasificatio
Particle Technology | Drug Delivery System | Biomass Gasificatio
H-Index Metrics
-
H-Index94
-
i10 Index359
-
Citation Counts29,514
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* Total H Index Rankings
Rankings
15,449
World Rank
124
Country Rank
61
University
Ranking Based On Selection:
9
* Total H Index Rankings
Rankings
17,090
World Rank
136
Country Rank
69
University
Ranking Based On Selection:
10
* Total H Index Rankings
Rankings
18,117
World Rank
29
Country Rank
4
University
Ranking Based On Selection:
11
Engineering & Technology / Chemical Engineering
2D Materials | Photocatalysis | Green hydrogen | Energy storage | CO2 conversio
2D Materials | Photocatalysis | Green hydrogen | Energy storage | CO2 conversio
H-Index Metrics
-
H-Index86
-
i10 Index286
-
Citation Counts21,932
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* Total H Index Rankings
Rankings
18,337
World Rank
144
Country Rank
73
University
Ranking Based On Selection:
12
Engineering & Technology / Chemical Engineering
Molecular Simulation | Machine Learning | MOFs | Polymer Membrane
Molecular Simulation | Machine Learning | MOFs | Polymer Membrane
H-Index Metrics
-
H-Index86
-
i10 Index269
-
Citation Counts21,825
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* Total H Index Rankings
Rankings
18,992
World Rank
147
Country Rank
50
University
Ranking Based On Selection:
13
Engineering & Technology / Chemical Engineering
Electrochemistry | Electrocatalysis | Lithium-ion batteries | Li-Air batteries | Supercapacitor
Electrochemistry | Electrocatalysis | Lithium-ion batteries | Li-Air batteries | Supercapacitor
H-Index Metrics
-
H-Index85
-
i10 Index194
-
Citation Counts35,507
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* Total H Index Rankings
Rankings
19,005
World Rank
148
Country Rank
76
University
Ranking Based On Selection:
14
Engineering & Technology / Chemical Engineering
Biochemical engineering | Anaerobic digestion | Food waste | Biomaterial
Biochemical engineering | Anaerobic digestion | Food waste | Biomaterial
H-Index Metrics
-
H-Index85
-
i10 Index227
-
Citation Counts20,162
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* Total H Index Rankings
Rankings
19,757
World Rank
38
Country Rank
2
University
Ranking Based On Selection:
15
Engineering & Technology / Chemical Engineering
Heterogeneous Catalysts | Biodiesel | Nano-magnetic Catalysts | Bio-based Catalyst
Heterogeneous Catalysts | Biodiesel | Nano-magnetic Catalysts | Bio-based Catalyst
H-Index Metrics
-
H-Index84
-
i10 Index338
-
Citation Counts24,189
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* Total H Index Rankings
Rankings
20,235
World Rank
153
Country Rank
78
University
Ranking Based On Selection:
16
Engineering & Technology / Chemical Engineering
Nanomedicine | Biomaterials | Drug Delivery | Cancer Nanotechnolog
Nanomedicine | Biomaterials | Drug Delivery | Cancer Nanotechnolog
H-Index Metrics
-
H-Index84
-
i10 Index173
-
Citation Counts26,454
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* Total H Index Rankings
Rankings
21,436
World Rank
162
Country Rank
83
University
Ranking Based On Selection:
17
Engineering & Technology / Chemical Engineering
Gas Hydrates | Clathrate Hydrates | Chemical Engineering | Energy | Decarbonizatio
Gas Hydrates | Clathrate Hydrates | Chemical Engineering | Energy | Decarbonizatio
H-Index Metrics
-
H-Index82
-
i10 Index202
-
Citation Counts24,518
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* Total H Index Rankings
Rankings
21,623
World Rank
43
Country Rank
2
University
Ranking Based On Selection:
18
Engineering & Technology / Chemical Engineering
Chemical engineering | fuel cell | hydrogen energy | drying technology | food technology
Chemical engineering | fuel cell | hydrogen energy | drying technology | food technology
H-Index Metrics
-
H-Index82
-
i10 Index292
-
Citation Counts26,701
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* Total H Index Rankings
Rankings
26,367
World Rank
203
Country Rank
108
University
Ranking Based On Selection:
19
Engineering & Technology / Chemical Engineering
Bionanotechnology | NanoEL | TMD | Nano-biology | Nano-safet
Bionanotechnology | NanoEL | TMD | Nano-biology | Nano-safet
H-Index Metrics
-
H-Index77
-
i10 Index156
-
Citation Counts21,683
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* Total H Index Rankings
Rankings
27,462
World Rank
2
Country Rank
1
University
Ranking Based On Selection:
20
Engineering & Technology / Chemical Engineering
Nanotechnology | Ultrasound | Pharmaceuticals | Water treatment | Extractio
Nanotechnology | Ultrasound | Pharmaceuticals | Water treatment | Extractio
H-Index Metrics
-
H-Index76
-
i10 Index263
-
Citation Counts18,162
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* Total H Index Rankings
Rankings
27,744
World Rank
64
Country Rank
8
University
Ranking Based On Selection:
21
Engineering & Technology / Chemical Engineering
Chemical reaction | renewable energy | environmental engineering | oleochemical engineerin
Chemical reaction | renewable energy | environmental engineering | oleochemical engineerin
H-Index Metrics
-
H-Index76
-
i10 Index218
-
Citation Counts21,220
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* Total H Index Rankings
Rankings
30,109
World Rank
70
Country Rank
5
University
Ranking Based On Selection:
22
Engineering & Technology / Chemical Engineering
Process System Engineering | Modelling and Process Optimization | Direct Methanol fuel cell | Fuel cell technolog
Process System Engineering | Modelling and Process Optimization | Direct Methanol fuel cell | Fuel cell technolog
H-Index Metrics
-
H-Index74
-
i10 Index226
-
Citation Counts23,188
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* Total H Index Rankings
Rankings
32,211
World Rank
238
Country Rank
126
University
Ranking Based On Selection:
23
Engineering & Technology / Chemical Engineering
crystallisation | formulation science | life cycle assessmen
crystallisation | formulation science | life cycle assessmen
H-Index Metrics
-
H-Index73
-
i10 Index205
-
Citation Counts17,238
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* Total H Index Rankings
Rankings
33,327
World Rank
246
Country Rank
131
University
Ranking Based On Selection:
24
* Total H Index Rankings
Rankings
34,067
World Rank
81
Country Rank
4
University
Ranking Based On Selection:
25
Engineering & Technology / Chemical Engineering
Renewable energy | biomass | biodiesel | bioethanol | microalga
Renewable energy | biomass | biodiesel | bioethanol | microalga
H-Index Metrics
-
H-Index71
-
i10 Index167
-
Citation Counts17,662
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Premium Data
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