University, Subject, Country, Region, World
University of Hong Kong 9.662 Scientists Subject Rankings - 2025
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 6 years. As of Jun 18, 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 (1.121.299) 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
577
World Rank
1
Country Rank
1
University
Ranking Based On Selection:
1
Natural Sciences / Chemical Sciences
Aggregation-Induced Emission | Functional Polymers | Sensing and Imaging | Room Temperature Phosphorescence | Clusteroluminescenc
Aggregation-Induced Emission | Functional Polymers | Sensing and Imaging | Room Temperature Phosphorescence | Clusteroluminescenc
H-Index Metrics
-
H-Index207
-
i10 Index2,109
-
Citation Counts225,741
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* Total H Index Rankings
Rankings
709
World Rank
2
Country Rank
1
University
Ranking Based On Selection:
2
Engineering & Technology / Nanoscience and Nanotechnology
Phase engineering of nanomaterials (PEN) and controlled epitaxial growth of heterostructure
Phase engineering of nanomaterials (PEN) and controlled epitaxial growth of heterostructure
H-Index Metrics
-
H-Index197
-
i10 Index565
-
Citation Counts158,894
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* Total H Index Rankings
Rankings
1,112
World Rank
3
Country Rank
2
University
Ranking Based On Selection:
3
* Total H Index Rankings
Rankings
1,250
World Rank
4
Country Rank
1
University
Ranking Based On Selection:
4
* Total H Index Rankings
Rankings
1,317
World Rank
5
Country Rank
1
University
Ranking Based On Selection:
5
* Total H Index Rankings
Rankings
1,363
World Rank
6
Country Rank
3
University
Ranking Based On Selection:
6
Engineering & Technology / Electrical & Electronic Engineering
Organic Photonics | Organic Electronics | Energy | Self-Assembl
Organic Photonics | Organic Electronics | Energy | Self-Assembl
H-Index Metrics
-
H-Index163
-
i10 Index822
-
Citation Counts102,085
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* Total H Index Rankings
Rankings
1,545
World Rank
7
Country Rank
2
University
Ranking Based On Selection:
7
* Total H Index Rankings
Rankings
1,697
World Rank
8
Country Rank
4
University
Ranking Based On Selection:
8
Engineering & Technology / Metallurgical & Materials Engineering
Materials Science and Engineering | Plasma Science | Surface Science | Biomaterial
Materials Science and Engineering | Plasma Science | Surface Science | Biomaterial
H-Index Metrics
-
H-Index154
-
i10 Index1,792
-
Citation Counts130,422
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* Total H Index Rankings
Rankings
1,730
World Rank
9
Country Rank
2
University
Ranking Based On Selection:
9
Engineering & Technology / Electrical & Electronic Engineering
Computer vision | pattern recognition | machine learnin
Computer vision | pattern recognition | machine learnin
H-Index Metrics
-
H-Index153
-
i10 Index262
-
Citation Counts135,412
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* Total H Index Rankings
Rankings
1,762
World Rank
11
Country Rank
3
University
Ranking Based On Selection:
10
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* Total H Index Rankings
Rankings
1,780
World Rank
12
Country Rank
5
University
Ranking Based On Selection:
11
Others
Aqueous batteries | Zinc batteries | Solid state batteries | Energy storage devices | Catalysts for sustainable developmen
Aqueous batteries | Zinc batteries | Solid state batteries | Energy storage devices | Catalysts for sustainable developmen
H-Index Metrics
-
H-Index152
-
i10 Index531
-
Citation Counts80,073
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* Total H Index Rankings
Rankings
1,853
World Rank
14
Country Rank
6
University
Ranking Based On Selection:
12
Engineering & Technology / Nanoscience and Nanotechnology
nanomaterials | quantum dots | nanotechnolog
nanomaterials | quantum dots | nanotechnolog
H-Index Metrics
-
H-Index151
-
i10 Index523
-
Citation Counts80,912
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* Total H Index Rankings
Rankings
2,068
World Rank
16
Country Rank
3
University
Ranking Based On Selection:
13
* Total H Index Rankings
Rankings
2,133
World Rank
17
Country Rank
7
University
Ranking Based On Selection:
14
Engineering & Technology / Metallurgical & Materials Engineering
Materials | organic electronics | photovoltaic
Materials | organic electronics | photovoltaic
H-Index Metrics
-
H-Index146
-
i10 Index952
-
Citation Counts86,905
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* Total H Index Rankings
Rankings
2,145
World Rank
18
Country Rank
1
University
Ranking Based On Selection:
15
Education / Education (Other, All)
Environmental Science | Environmental Toxicology | Environmental Restoration | Waste Recycling | Aquacultur
Environmental Science | Environmental Toxicology | Environmental Restoration | Waste Recycling | Aquacultur
H-Index Metrics
-
H-Index146
-
i10 Index785
-
Citation Counts80,773
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* Total H Index Rankings
Rankings
2,208
World Rank
19
Country Rank
8
University
Ranking Based On Selection:
16
Engineering & Technology / Electrical & Electronic Engineering
Organic electronics devices and nanomaterials for energy | environmental and biomedical application
Organic electronics devices and nanomaterials for energy | environmental and biomedical application
H-Index Metrics
-
H-Index145
-
i10 Index902
-
Citation Counts84,810
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* Total H Index Rankings
Rankings
2,289
World Rank
67
Country Rank
1
University
Ranking Based On Selection:
17
* Total H Index Rankings
Rankings
2,301
World Rank
20
Country Rank
4
University
Ranking Based On Selection:
18
* Total H Index Rankings
Rankings
2,342
World Rank
21
Country Rank
2
University
Ranking Based On Selection:
19
Engineering & Technology / Computer Science
Artificial Intelligence | Transfer Learning | Federated Learning | Machine Learning and Data Minin
Artificial Intelligence | Transfer Learning | Federated Learning | Machine Learning and Data Minin
H-Index Metrics
-
H-Index143
-
i10 Index646
-
Citation Counts115,415
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* Total H Index Rankings
Rankings
2,481
World Rank
22
Country Rank
5
University
Ranking Based On Selection:
20
* Total H Index Rankings
Rankings
2,546
World Rank
23
Country Rank
4
University
Ranking Based On Selection:
21
* Total H Index Rankings
Rankings
2,548
World Rank
24
Country Rank
3
University
Ranking Based On Selection:
22
Engineering & Technology / Computer Science
Clusters-Endohedral metallofullerenes-Nanomaterials-Energy Conversion and Storag
Clusters-Endohedral metallofullerenes-Nanomaterials-Energy Conversion and Storag
H-Index Metrics
-
H-Index140
-
i10 Index622
-
Citation Counts73,309
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* Total H Index Rankings
Rankings
2,897
World Rank
25
Country Rank
6
University
Ranking Based On Selection:
23
* Total H Index Rankings
Rankings
2,914
World Rank
26
Country Rank
5
University
Ranking Based On Selection:
24
Natural Sciences / Geography
Geography | Remote Sensing | Land Cover | Urban Systems | Global Sustainabilit
Geography | Remote Sensing | Land Cover | Urban Systems | Global Sustainabilit
H-Index Metrics
-
H-Index136
-
i10 Index559
-
Citation Counts81,943
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* Total H Index Rankings
Rankings
2,974
World Rank
27
Country Rank
7
University
Ranking Based On Selection:
25
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