The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 197 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 Jan 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 (873.690) 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 IndexRankings
Ranking Based On Selection: 1
Physical Chemistry
Electrochemistry
Corrosion
Nanotechnology
Energy
Metrics
H-Index
i10 Index
Citation Counts
61
115
7,119
* Total H IndexRankings
Ranking Based On Selection: 2
Bionanotechnology
Metrics
H-Index
i10 Index
Citation Counts
58
144
10,812
* Total H IndexRankings
Ranking Based On Selection: 3
Nanotechnology
Metrics
H-Index
i10 Index
Citation Counts
54
172
8,221
* Total H IndexRankings
Ranking Based On Selection: 4
Nanomaterials
Energy
Supercapacitors
Environment
Recycling
Metrics
H-Index
i10 Index
Citation Counts
53
120
7,566
* Total H IndexRankings
Ranking Based On Selection: 5
Engineering & Technology
PV technology
Thin Film chalcogenide Solar cells
Photoelectrochemistry
Nanosciences
Metrics
H-Index
i10 Index
Citation Counts
53
108
9,449
* Total H IndexRankings
Ranking Based On Selection: 6
Thermal analysis
Energetic materials
Cellulose nanomaterials
Composites
Nanomaterials
Metrics
H-Index
i10 Index
Citation Counts
46
135
9,992
* Total H IndexRankings
Ranking Based On Selection: 7
Nanotechnology
Optics and Photonics
3D Laser Nanoprinting and Nonlinear Optics
Plasmonics and Waveguide Optics
Smart Materia
Metrics
H-Index
i10 Index
Citation Counts
46
108
8,043
* Total H IndexRankings
Ranking Based On Selection: 8
Nanotechnology and Photonic Glasses
Metrics
H-Index
i10 Index
Citation Counts
45
122
6,065
* Total H IndexRankings
Ranking Based On Selection: 9
Analytical Environmental Chemistry
Nanotechnology for Water
Adsorption Chemistry
Metrics
H-Index
i10 Index
Citation Counts
45
142
6,475
* Total H IndexRankings
Ranking Based On Selection: 10
nanotechnology
Metrics
H-Index
i10 Index
Citation Counts
42
139
6,324
* Total H IndexRankings
Ranking Based On Selection: 11
Minerals Processing
S/L separation
waste recycling
photocatalytic degradation of organic matrials
nanomaterials synthesis &
Metrics
H-Index
i10 Index
Citation Counts
42
140
9,314
* Total H IndexRankings
Ranking Based On Selection: 12
Advanced oxidation processes
Nanomaterial synthesis
Heterogeneous catalysis
Water treatment
Metrics
H-Index
i10 Index
Citation Counts
41
106
5,208
* Total H IndexRankings
Ranking Based On Selection: 13
Nanostructural Materials
Thin Semiconductor Films
Materials Physics
Metrics
H-Index
i10 Index
Citation Counts
40
44
5,126
* Total H IndexRankings
Ranking Based On Selection: 14
Carbon Technology
Energy Materials
Spectroscopy
Supercapacitors
LIBs
Metrics
H-Index
i10 Index
Citation Counts
40
79
4,296
* Total H IndexRankings
Ranking Based On Selection: 15
Nanocomposites
polymer nanocomposites
Energy storage
Nanotechnology
Metrics
H-Index
i10 Index
Citation Counts
38
58
3,846
* Total H IndexRankings
Ranking Based On Selection: 16
Biomaterials
Regenerative Medicine
NanoMedicine
NanoBiotechnology
NanoToxicology
Metrics
H-Index
i10 Index
Citation Counts
37
76
5,316
* Total H IndexRankings
Ranking Based On Selection: 17
Conservation of Natural Resources
Phytoremediation
Phytosynthesis of Nanomaterials
Metrics
H-Index
i10 Index
Citation Counts
37
61
3,714
* Total H IndexRankings
Ranking Based On Selection: 18
Nanobiotechnology
Metrics
H-Index
i10 Index
Citation Counts
36
80
3,678
* Total H IndexRankings
Ranking Based On Selection: 19
ieee
Metrics
H-Index
i10 Index
Citation Counts
36
70
3,887
* Total H IndexRankings
Ranking Based On Selection: 20
Biomaterials
Nanomaterials
electrocatalysis
Metrics
H-Index
i10 Index
Citation Counts
36
74
4,207
* Total H IndexRankings
Ranking Based On Selection: 21
Nanomaterials
Metal and Metal oxides NPs
Multi-functional applications
Photocatalysis
Sensor
Metrics
H-Index
i10 Index
Citation Counts
35
106
4,471
* Total H IndexRankings
Ranking Based On Selection: 22
Natural Organic Matter
Urban Water Cycle
Nanotechnology for Water Treatment
Drinking Water Treatment
Membrane Science and Te
Metrics
H-Index
i10 Index
Citation Counts
35
89
3,750
* Total H IndexRankings
Ranking Based On Selection: 23
Nanocellulose
Nanomaterials Functionalisation
Environmental remediation
Phosphorylation
Metrics
H-Index
i10 Index
Citation Counts
34
55
6,204
* Total H IndexRankings
Ranking Based On Selection: 24
Nanoscience and Nanotechnology
Metrics
H-Index
i10 Index
Citation Counts
34
106
4,571
* Total H IndexRankings
Ranking Based On Selection: 25
Electrocatalysis - HER - Fuel Cells
Metrics
H-Index
i10 Index
Citation Counts
33
53
3,252
MA Deyab
Metrics
H-Index
i10-Index
Citation Counts
61
115
7,119
Physical Chemistry
Electrochemistry
Corrosion
Nanotechnology
Energy
Mohamed T. El-Saadony
Zagazig University
Sharqia, Egypt
Metrics
H-Index
i10-Index
Citation Counts
58
144
10,812
Lassaad El Mir
Université de Gabès
Gabès, Tunisia
Metrics
H-Index
i10-Index
Citation Counts
54
172
8,221
Gomaa AM Ali
Al Azhar University
Cairo, Egypt
Metrics
H-Index
i10-Index
Citation Counts
53
120
7,566
Nanomaterials
Energy
Supercapacitors
Environment
Recycling
Ahmed Ennaoui
Metrics
H-Index
i10-Index
Citation Counts
53
108
9,449
Engineering & Technology
PV technology
Thin Film chalcogenide Solar cells
Photoelectrochemistry
Nanosciences
Djalal Trache
Ecole Militaire Polytechnique
Bordj El Bahri, Algeria
Metrics
H-Index
i10-Index
Citation Counts
46
135
9,992
Thermal analysis
Energetic materials
Cellulose nanomaterials
Composites
Nanomaterials
Zouheir Sekkat
Metrics
H-Index
i10-Index
Citation Counts
46
108
8,043
Nanotechnology
Optics and Photonics
3D Laser Nanoprinting and Nonlinear Optics
Plasmonics and Waveguide Optics
Smart Materia
Habib Elhouichet
Metrics
H-Index
i10-Index
Citation Counts
45
122
6,065
Nanotechnology and Photonic Glasses
Jane Catherine Ngila
University of Johannesburg
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
45
142
6,475
Analytical Environmental Chemistry
Nanotechnology for Water
Adsorption Chemistry
Samuel Oluwatobi Oluwafemi
University of Johannesburg
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
42
139
6,324
IA Ibrahim
Metrics
H-Index
i10-Index
Citation Counts
42
140
9,314
Minerals Processing
S/L separation
waste recycling
photocatalytic degradation of organic matrials
nanomaterials synthesis &
Alex Kuvarega
University of South Africa
Pretoria, South Africa
Metrics
H-Index
i10-Index
Citation Counts
41
106
5,208
Advanced oxidation processes
Nanomaterial synthesis
Heterogeneous catalysis
Water treatment
Ahmed Saeed Hassanien
Benha University
Qalyubia, Egypt
Metrics
H-Index
i10-Index
Citation Counts
40
44
5,126
Nanostructural Materials
Thin Semiconductor Films
Materials Physics
Abdulhakeem Bello
Metrics
H-Index
i10-Index
Citation Counts
40
79
4,296
Carbon Technology
Energy Materials
Spectroscopy
Supercapacitors
LIBs
Abdelwahab Rajeh
Mansoura University
Mansoura, Egypt
Metrics
H-Index
i10-Index
Citation Counts
38
58
3,846
Nanocomposites
polymer nanocomposites
Energy storage
Nanotechnology
Shivendu Ranjan|Shivendu R, S Ranjan
University of Johannesburg
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
37
76
5,316
Biomaterials
Regenerative Medicine
NanoMedicine
NanoBiotechnology
NanoToxicology
Manal Fawzy
Alexandria University
Alexandria, Egypt
Metrics
H-Index
i10-Index
Citation Counts
37
61
3,714
Conservation of Natural Resources
Phytoremediation
Phytosynthesis of Nanomaterials
Mervin Meyer
University of the Western Cape
Bellville, South Africa
Metrics
H-Index
i10-Index
Citation Counts
36
80
3,678
Abdallah Abdelhay
South Valley University
Qena, Egypt
Metrics
H-Index
i10-Index
Citation Counts
36
70
3,887
Nasser Y. Mostafa
Suez Canal University
Ismailia, Egypt
Metrics
H-Index
i10-Index
Citation Counts
36
74
4,207
Biomaterials
Nanomaterials
electrocatalysis
HC Ananda Murthy
Metrics
H-Index
i10-Index
Citation Counts
35
106
4,471
Nanomaterials
Metal and Metal oxides NPs
Multi-functional applications
Photocatalysis
Sensor
Thabo Ti Nkambule
University of South Africa
Pretoria, South Africa
Metrics
H-Index
i10-Index
Citation Counts
35
89
3,750
Natural Organic Matter
Urban Water Cycle
Nanotechnology for Water Treatment
Drinking Water Treatment
Membrane Science and Te
Houssine Sehaqui
Mohammed VI Polytechnic University
Ben Guerir, Morocco
Metrics
H-Index
i10-Index
Citation Counts
34
55
6,204
Nanocellulose
Nanomaterials Functionalisation
Environmental remediation
Phosphorylation
Patrick Ndungu
University of Johannesburg
Johannesburg, South Africa
Metrics
H-Index
i10-Index
Citation Counts
34
106
4,571
Nanoscience and Nanotechnology
Electrocatalysis - HER - Fuel Cells