World Scientist and University Rankings 2025
Saudi Arabia Engineering & Technology 114 Scientists Subject Rankings - 2025
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 Feb 17, 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 (910.673) 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
Membranes
membrane separations
polymer synthesis
chemical engineering
Metrics
H-Index
i10 Index
Citation Counts
95
237
30,067
* Total H IndexRankings
Ranking Based On Selection: 2
Membranes and polymer science
Metrics
H-Index
i10 Index
Citation Counts
73
273
20,033
* Total H IndexRankings
Ranking Based On Selection: 3
polymeric membranes
self-assembly
hybrid materials
Metrics
H-Index
i10 Index
Citation Counts
70
178
17,811
* Total H IndexRankings
Ranking Based On Selection: 4
Polymerization
Block Copolymers
Chemical Synthesis
Macromolecular engineering
Functional polymers for biomedical application
Metrics
H-Index
i10 Index
Citation Counts
70
225
17,500
* Total H IndexRankings
Ranking Based On Selection: 5
Membranes
Gas Separations
Water Desalination
Porous Materials
Chemical Engineering
Metrics
H-Index
i10 Index
Citation Counts
66
151
17,682
* Total H IndexRankings
Ranking Based On Selection: 6
Acoustic Cavitation
Sonochemistry
Liquid Membrane
Advanced Oxidation
Separation Processes
Metrics
H-Index
i10 Index
Citation Counts
60
165
13,573
* Total H IndexRankings
Ranking Based On Selection: 7
Electrocoagulation
Electrochemical Disinfection
Environmental Engineering
Green Chemistry
Water Treatment
Metrics
H-Index
i10 Index
Citation Counts
57
156
8,940
* Total H IndexRankings
Ranking Based On Selection: 8
Catalysis
Reaction Engineering
Refining and Petrochemicals
CO2 capture
Renewable energy
Metrics
H-Index
i10 Index
Citation Counts
57
272
16,659
* Total H IndexRankings
Ranking Based On Selection: 9
Chemical Engineering
Energy and Fuels
Waste-to-Energy
Nanomaterials
Pyrolysis
Metrics
H-Index
i10 Index
Citation Counts
55
100
11,258
* Total H IndexRankings
Ranking Based On Selection: 10
Process Engineering
CBRN Defense
Reactors
Metrics
H-Index
i10 Index
Citation Counts
50
120
6,494
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* Total H IndexRankings
Ranking Based On Selection: 11
Chemical Engineering
Catalyst
Metrics
H-Index
i10 Index
Citation Counts
46
155
6,342
* Total H IndexRankings
Ranking Based On Selection: 12
Chemical Engineering
Metrics
H-Index
i10 Index
Citation Counts
46
172
7,591
* Total H IndexRankings
Ranking Based On Selection: 13
Polymers
Materials
Environmental Engineering
Metrics
H-Index
i10 Index
Citation Counts
42
128
6,608
* Total H IndexRankings
Ranking Based On Selection: 14
Chemical Engineering
Metrics
H-Index
i10 Index
Citation Counts
41
125
5,318
* Total H IndexRankings
Ranking Based On Selection: 15
Porous materials
Supercapacitors
Batteries
eCO2RR
Water splitting
Metrics
H-Index
i10 Index
Citation Counts
39
43
14,487
* Total H IndexRankings
Ranking Based On Selection: 16
Water Treatment and Desalination
Polymer Membranes
Metrics
H-Index
i10 Index
Citation Counts
38
70
4,135
* Total H IndexRankings
Ranking Based On Selection: 17
Head of Chemical Eng. Dept.
Metrics
H-Index
i10 Index
Citation Counts
37
107
4,105
* Total H IndexRankings
Ranking Based On Selection: 18
Nanostructures Fabrication
Photocatalysis
WasteWater Treatment
Hydrogen Production
Sensing
Metrics
H-Index
i10 Index
Citation Counts
36
73
4,064
* Total H IndexRankings
Ranking Based On Selection: 19
Hybrid Intelligent Systems
DSP
Adaptive Communication
Softcomputing
AI & ML
Metrics
H-Index
i10 Index
Citation Counts
34
113
3,955
* Total H IndexRankings
Ranking Based On Selection: 20
Biomass
Coal
Thermochemical conversion
Metrics
H-Index
i10 Index
Citation Counts
32
82
4,190
* Total H IndexRankings
Ranking Based On Selection: 21
High-throughput
Automation
Catalysis
Metrics
H-Index
i10 Index
Citation Counts
31
55
4,503
* Total H IndexRankings
Ranking Based On Selection: 22
Electrochemistry
Catalysis
Energy Conversion
Surface Science
Nanomaterials
Metrics
H-Index
i10 Index
Citation Counts
31
87
2,790
* Total H IndexRankings
Ranking Based On Selection: 23
Graph Algorithms
Graph Theory
Graph labeling
Distance in graphs
topological indices
Metrics
H-Index
i10 Index
Citation Counts
29
98
3,205
* Total H IndexRankings
Ranking Based On Selection: 24
Chemical Engineering
Metrics
H-Index
i10 Index
Citation Counts
29
49
2,772
* Total H IndexRankings
Ranking Based On Selection: 25
Gas Hydrates
Hydrate based Technologies
District Cooling
Flow Assurance
Hydrate Desalination
Metrics
H-Index
i10 Index
Citation Counts
28
46
2,368
Ingo Pinnau
Metrics
H-Index
i10-Index
Citation Counts
95
237
30,067
Membranes
membrane separations
polymer synthesis
chemical engineering
Klaus Viktor Peinemann
Metrics
H-Index
i10-Index
Citation Counts
70
178
17,811
polymeric membranes
self-assembly
hybrid materials
Yves Gnanou
Metrics
H-Index
i10-Index
Citation Counts
70
225
17,500
Polymerization
Block Copolymers
Chemical Synthesis
Macromolecular engineering
Functional polymers for biomedical application
Zhiping Lai
Metrics
H-Index
i10-Index
Citation Counts
66
151
17,682
Membranes
Gas Separations
Water Desalination
Porous Materials
Chemical Engineering
Oualid Hamdaoui
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
60
165
13,573
Acoustic Cavitation
Sonochemistry
Liquid Membrane
Advanced Oxidation
Separation Processes
Djamel Ghernaout
Metrics
H-Index
i10-Index
Citation Counts
57
156
8,940
Electrocoagulation
Electrochemical Disinfection
Environmental Engineering
Green Chemistry
Water Treatment
Mohammad M Hossain
Metrics
H-Index
i10-Index
Citation Counts
57
272
16,659
Catalysis
Reaction Engineering
Refining and Petrochemicals
CO2 capture
Renewable energy
Mohammad Rehan
Metrics
H-Index
i10-Index
Citation Counts
55
100
11,258
Chemical Engineering
Energy and Fuels
Waste-to-Energy
Nanomaterials
Pyrolysis
Aymen Amin Assadi
Metrics
H-Index
i10-Index
Citation Counts
50
120
6,494
Process Engineering
CBRN Defense
Reactors
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Ahmed Alfatesh|Ahmed Alfatesh, Ahmed S. Al-Fatesh
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
46
155
6,342
Chemical Engineering
Catalyst
Saeed M Al Zahrani
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
46
172
7,591
Mamdouh A Al Harthi
Metrics
H-Index
i10-Index
Citation Counts
42
128
6,608
Polymers
Materials
Environmental Engineering
Anis Fakeeha
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
41
125
5,318
Sharath Kandambeth
Metrics
H-Index
i10-Index
Citation Counts
39
43
14,487
Porous materials
Supercapacitors
Batteries
eCO2RR
Water splitting
Mansour Alhoshan
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
38
70
4,135
Water Treatment and Desalination
Polymer Membranes
Noureddine Elboughdiri|Elboughdiri Noureddine, Elboughdiri N, N Elboughdiri
Metrics
H-Index
i10-Index
Citation Counts
37
107
4,105
Head of Chemical Eng. Dept.
Mohammad Ehtisham Khan
Jazan University
Chiba, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
36
73
4,064
Nanostructures Fabrication
Photocatalysis
WasteWater Treatment
Hydrogen Production
Sensing
Atta Ur Rahman|Atta-ur Rahman, Atta Rahman
Metrics
H-Index
i10-Index
Citation Counts
34
113
3,955
Hybrid Intelligent Systems
DSP
Adaptive Communication
Softcomputing
AI & ML
Long Jiang
Metrics
H-Index
i10-Index
Citation Counts
32
82
4,190
Biomass
Coal
Thermochemical conversion
Adrian Ramirez Galilea
Metrics
H-Index
i10-Index
Citation Counts
31
55
4,503
High-throughput
Automation
Catalysis
Arafat Toghan
Metrics
H-Index
i10-Index
Citation Counts
31
87
2,790
Electrochemistry
Catalysis
Energy Conversion
Surface Science
Nanomaterials
Ali Ahmad
Jazan University
Chiba, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
29
98
3,205
Graph Algorithms
Graph Theory
Graph labeling
Distance in graphs
topological indices
Mohamed Kamel Hadj-Kali
King Saud University
Riyadh, Saudi Arabia
Metrics
H-Index
i10-Index
Citation Counts
29
49
2,772
Muhammad Saad Khan
Metrics
H-Index
i10-Index
Citation Counts
28
46
2,368
Gas Hydrates
Hydrate based Technologies
District Cooling
Flow Assurance
Hydrate Desalination