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 04, 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].
Rankings
MXene (Nano-Materials) | Solar Energy | Energy storage | nanofluids | Heat Transfe
H-Index Metrics
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H-Index145
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i10 Index605
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Citation Counts85,743
Rankings
Combustion | Nanofluid Heat Transfer | Renewable Energy | Computational Fluid Dynamic
H-Index Metrics
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H-Index91
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i10 Index292
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Citation Counts24,966
Rankings
Advanced Ceramics | Engineering and Technology | Materials Scienc
H-Index Metrics
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H-Index80
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i10 Index287
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Citation Counts20,353
Rankings
Rankings
Green Hydrogen | Biorenewables | Solar energy | Sustainability of energy systems | Exergy analysi
H-Index Metrics
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H-Index71
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i10 Index201
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Citation Counts19,652
Rankings
Mechanical & Materials Engineering | biocomposites | natural fibre composites | polymer composite
H-Index Metrics
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H-Index70
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i10 Index191
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Citation Counts16,363
Rankings
Heat Transfer | Fluid Mechanics | Nano Fluids and Heat Exchanger Fouling Mitingatio
H-Index Metrics
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H-Index70
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i10 Index210
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Citation Counts16,905
Rankings
Advanced material | Mxene | Nanofluid | MOF | Energ
H-Index Metrics
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H-Index64
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i10 Index280
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Citation Counts15,696
Rankings
Rankings
2D nanomaterials | Nanofluids/lubricants | TES/EES | PCM | Waste Recyclin
H-Index Metrics
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H-Index58
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i10 Index153
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Citation Counts11,488
Rankings
Fuels | Carbonaceous Solid Waste Thermal Conversion | Sustainable and Renewable Energy and Materials Research
H-Index Metrics
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H-Index57
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i10 Index159
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Citation Counts13,452
Rankings
Heat Transfer | Fluid mechanics | Aeration (Mixing of water) | CFD | Aquacultur
H-Index Metrics
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H-Index54
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i10 Index142
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Citation Counts11,985
Rankings
powder metallurgy (PM) | metal injection moulding (MIM) | NiTi alloy | shape memory alloy | porous biometalli
H-Index Metrics
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H-Index52
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i10 Index308
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Citation Counts13,849
Rankings
Mechanical Engineering | Renewable Energy | BTMS | Nano Fluid | PC
H-Index Metrics
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H-Index52
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i10 Index161
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Citation Counts8,253
Rankings
Stability derivatives for wing | Active & Passive Control of Base Pressure and Supersonic Jets | Drag Reduction Techniques
H-Index Metrics
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H-Index50
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i10 Index303
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Citation Counts11,516
Rankings
Rankings
Rankings
Thermochemical process | Advanced porous carbon | Energy | Waste conversion | Environmental remediatio
H-Index Metrics
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H-Index47
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i10 Index76
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Citation Counts8,246
Rankings
Structural Dynamics | Stochastic Processes | Offshore Engineering | Energy Transitio
H-Index Metrics
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H-Index47
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i10 Index131
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Citation Counts8,128
Rankings
Rankings
Machining - Sustainability - Membrane Manufacture - Industrial Engineerin
H-Index Metrics
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H-Index46
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i10 Index120
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Citation Counts7,528
Rankings
Rankings
Combustion | Heat Transfer | Thermodynamics | High Speed Combustio
H-Index Metrics
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H-Index44
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i10 Index104
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Citation Counts11,395
Rankings
Rankings
Environmental Hydrology | River Modelling | Water Quality Modeling | Statisti
H-Index Metrics
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H-Index44
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i10 Index158
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Citation Counts6,496
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