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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 Dec 31, 2025, 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 (1.131.755) 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
292
World Rank
5
Country Rank
2
University
Ranking Based On Selection:
1
* Total H Index Rankings
Rankings
1,067
World Rank
11
Country Rank
1
University
Ranking Based On Selection:
2
Engineering & Technology / Aerospace Engineering
Astroparticle Physics | Elementary Particle Physics | High Energy Physic
Astroparticle Physics | Elementary Particle Physics | High Energy Physic
H-Index Metrics
-
H-Index180
-
i10 Index925
-
Citation Counts146,084
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* Total H Index Rankings
Rankings
1,142
World Rank
13
Country Rank
1
University
Ranking Based On Selection:
3
Engineering & Technology / Biomedical Engineering
Tissue Engineering | Regenerative Medicine | Intelligent Polymer | Biomaterials | Drug Delivery System
Tissue Engineering | Regenerative Medicine | Intelligent Polymer | Biomaterials | Drug Delivery System
H-Index Metrics
-
H-Index177
-
i10 Index908
-
Citation Counts115,240
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* Total H Index Rankings
Rankings
1,311
World Rank
14
Country Rank
2
University
Ranking Based On Selection:
4
Engineering & Technology / Nanoscience and Nanotechnology
Biomaterials | Polymers | Drug Delivery | Nanotechnolog
Biomaterials | Polymers | Drug Delivery | Nanotechnolog
H-Index Metrics
-
H-Index170
-
i10 Index754
-
Citation Counts112,745
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* Total H Index Rankings
Rankings
1,495
World Rank
17
Country Rank
2
University
Ranking Based On Selection:
5
* Total H Index Rankings
Rankings
1,845
World Rank
22
Country Rank
3
University
Ranking Based On Selection:
6
Engineering & Technology / Nanoscience and Nanotechnology
Photocatalysis | Solar energy conversion | Photofunctional Materials | Nanomaterial
Photocatalysis | Solar energy conversion | Photofunctional Materials | Nanomaterial
H-Index Metrics
-
H-Index155
-
i10 Index653
-
Citation Counts89,747
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* Total H Index Rankings
Rankings
1,896
World Rank
23
Country Rank
1
University
Ranking Based On Selection:
7
Engineering & Technology / Computer Science
Pharmaceutical Development | Chemical Engineering | CFD | DEM Modelin
Pharmaceutical Development | Chemical Engineering | CFD | DEM Modelin
H-Index Metrics
-
H-Index154
-
i10 Index1,320
-
Citation Counts148,157
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* Total H Index Rankings
Rankings
2,109
World Rank
24
Country Rank
4
University
Ranking Based On Selection:
8
Engineering & Technology / Metallurgical & Materials Engineering
Materials Science | Physical Chemistr
Materials Science | Physical Chemistr
H-Index Metrics
-
H-Index151
-
i10 Index652
-
Citation Counts99,435
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* Total H Index Rankings
Rankings
2,307
World Rank
29
Country Rank
1
University
Ranking Based On Selection:
9
Engineering & Technology / Electrical & Electronic Engineering
Organic Electronics | OLED | Organic Semiconductors | Optoelectronic
Organic Electronics | OLED | Organic Semiconductors | Optoelectronic
H-Index Metrics
-
H-Index147
-
i10 Index707
-
Citation Counts110,700
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* Total H Index Rankings
Rankings
3,156
World Rank
39
Country Rank
5
University
Ranking Based On Selection:
10
Engineering & Technology / Nanoscience and Nanotechnology
Nanomaterials | Surface Science | Supramolecular Chemistry | Molecular Recognition | Self-assembl
Nanomaterials | Surface Science | Supramolecular Chemistry | Molecular Recognition | Self-assembl
H-Index Metrics
-
H-Index137
-
i10 Index786
-
Citation Counts73,614
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* Total H Index Rankings
Rankings
3,351
World Rank
42
Country Rank
6
University
Ranking Based On Selection:
11
Engineering & Technology / Metallurgical & Materials Engineering
Materials Science | Materials Science and Engineering | Magnetic Materials | Physical Metallurgy | Atom Probe Tomograph
Materials Science | Materials Science and Engineering | Magnetic Materials | Physical Metallurgy | Atom Probe Tomograph
H-Index Metrics
-
H-Index135
-
i10 Index709
-
Citation Counts61,493
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* Total H Index Rankings
Rankings
3,421
World Rank
43
Country Rank
1
University
Ranking Based On Selection:
12
* Total H Index Rankings
Rankings
4,109
World Rank
55
Country Rank
4
University
Ranking Based On Selection:
13
Engineering & Technology / Biomedical Engineering
Biomedical Signal Processing | Neural Engineering | Tensor Decomposition | Analog_Electronics | BC
Biomedical Signal Processing | Neural Engineering | Tensor Decomposition | Analog_Electronics | BC
H-Index Metrics
-
H-Index128
-
i10 Index669
-
Citation Counts73,387
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* Total H Index Rankings
Rankings
5,145
World Rank
70
Country Rank
4
University
Ranking Based On Selection:
14
* Total H Index Rankings
Rankings
5,366
World Rank
74
Country Rank
1
University
Ranking Based On Selection:
15
Engineering & Technology / Metallurgical & Materials Engineering
Carbon Science | Applications of novel carbon materials | nanostructured carbons | Nanocarbon
Carbon Science | Applications of novel carbon materials | nanostructured carbons | Nanocarbon
H-Index Metrics
-
H-Index120
-
i10 Index641
-
Citation Counts64,818
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* Total H Index Rankings
Rankings
5,910
World Rank
77
Country Rank
7
University
Ranking Based On Selection:
16
Engineering & Technology / Metallurgical & Materials Engineering
Layered compounds | 2D materials | nanosheet
Layered compounds | 2D materials | nanosheet
H-Index Metrics
-
H-Index117
-
i10 Index525
-
Citation Counts57,128
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* Total H Index Rankings
Rankings
6,810
World Rank
85
Country Rank
5
University
Ranking Based On Selection:
17
Engineering & Technology / Electrical & Electronic Engineering
Semiconductor devices | Opto electronics | Power devices | High frequency devices | photocathod
Semiconductor devices | Opto electronics | Power devices | High frequency devices | photocathod
H-Index Metrics
-
H-Index113
-
i10 Index856
-
Citation Counts66,159
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* Total H Index Rankings
Rankings
7,267
World Rank
88
Country Rank
2
University
Ranking Based On Selection:
18
Engineering & Technology / Biomaterials and Tissue Engineering
Tissue Engineering | Regenerative Medicine | Stem Cell Biolog
Tissue Engineering | Regenerative Medicine | Stem Cell Biolog
H-Index Metrics
-
H-Index111
-
i10 Index415
-
Citation Counts46,766
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* Total H Index Rankings
Rankings
7,524
World Rank
90
Country Rank
3
University
Ranking Based On Selection:
19
* Total H Index Rankings
Rankings
7,952
World Rank
96
Country Rank
1
University
Ranking Based On Selection:
20
* Total H Index Rankings
Rankings
8,362
World Rank
102
Country Rank
9
University
Ranking Based On Selection:
21
Engineering & Technology / Nanoscience and Nanotechnology
oxidative stress | ferroptosis | cancer prevention | nanomaterials | plasma medicin
oxidative stress | ferroptosis | cancer prevention | nanomaterials | plasma medicin
H-Index Metrics
-
H-Index107
-
i10 Index375
-
Citation Counts62,543
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* Total H Index Rankings
Rankings
8,604
World Rank
108
Country Rank
2
University
Ranking Based On Selection:
22
Engineering & Technology / Earth Sciences
Geochemistry | Atmospheric Chemistry | Aerosol Chemistry | Geoscienc
Geochemistry | Atmospheric Chemistry | Aerosol Chemistry | Geoscienc
H-Index Metrics
-
H-Index106
-
i10 Index493
-
Citation Counts40,579
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* Total H Index Rankings
Rankings
8,876
World Rank
115
Country Rank
10
University
Ranking Based On Selection:
23
* Total H Index Rankings
Rankings
9,212
World Rank
119
Country Rank
1
University
Ranking Based On Selection:
24
Engineering & Technology / Marine Sciences and Engineering
Climate Dynamics | Physical Oceanography | Dynamic Meteorology | Geophysical Fluid Dynamic
Climate Dynamics | Physical Oceanography | Dynamic Meteorology | Geophysical Fluid Dynamic
H-Index Metrics
-
H-Index104
-
i10 Index256
-
Citation Counts47,897
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* Total H Index Rankings
Rankings
9,679
World Rank
125
Country Rank
10
University
Ranking Based On Selection:
25
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