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 01, 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
Environmental Sustainability | Clean Energy | Nanomaterials | Catalysi
H-Index Metrics
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H-Index69
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i10 Index239
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Citation Counts15,851
Rankings
Sustainable Materials | Biofuels Production | Solid Waste Recycling | Biocha
H-Index Metrics
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H-Index58
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i10 Index210
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Citation Counts11,344
Rankings
Applied Geosciences | Environmental Science | Water/soil/air & human health | Natural hazards | AI & M
H-Index Metrics
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H-Index52
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i10 Index119
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Citation Counts7,132
Rankings
Polymer Nanocomposites | Hybrid Bionanocomposites | Fire Retardancy | Engineering Textile
H-Index Metrics
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H-Index50
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i10 Index111
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Citation Counts6,901
Rankings
Microbiology | Biotechnology | and Nanotechnolog
H-Index Metrics
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H-Index48
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i10 Index276
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Citation Counts14,668
Rankings
Wastewater treatment | Biomass | Biogas | Modeling and Optimization | Chemical Engineerin
H-Index Metrics
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H-Index47
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i10 Index120
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Citation Counts7,334
Rankings
Science | computer and environmental education | quality assurance in higher educatio
H-Index Metrics
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H-Index47
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i10 Index138
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Citation Counts8,645
Rankings
Food microbiology | Food safety | Fungal taxonomy | Mycotoxicolog
H-Index Metrics
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H-Index46
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i10 Index108
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Citation Counts6,718
Rankings
Rankings
Physical Metallurgy | Mechanical Behavior of Materials | Composite Materials | Structural Integrity | Failure Analysi
H-Index Metrics
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H-Index45
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i10 Index115
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Citation Counts8,311
Rankings
Functional Foods | Nutraceuticals and Phytomedicine. Invertebrates | Drosophila and Lobster Cockroac
H-Index Metrics
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H-Index45
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i10 Index90
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Citation Counts8,206
Rankings
Rankings
Kinetics and catalysis | composite Studies | Adsorption/Coagulation Studies | Corrosion | Bioenerg
H-Index Metrics
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H-Index43
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i10 Index212
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Citation Counts7,901
Rankings
Chemical Engineering | Alternative energy and Nanotechnolog
H-Index Metrics
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H-Index43
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i10 Index140
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Citation Counts7,439
Rankings
Biofuel Development | Bioprocessing | Catalysis | Process Modeling and Optimization | Process Intensificatio
H-Index Metrics
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H-Index43
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i10 Index74
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Citation Counts5,513
Rankings
Polymer Science and technology | composites and polymer processin
H-Index Metrics
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H-Index43
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i10 Index115
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Citation Counts7,082
Rankings
Carbon Technology | Energy Materials | Spectroscopy | Supercapacitors | LIB
H-Index Metrics
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H-Index42
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i10 Index88
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Citation Counts4,934
Rankings
Rankings
METALLURGICAL AND MATERIALS ENGINEERIN
H-Index Metrics
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H-Index40
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i10 Index148
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Citation Counts6,458
Rankings
Physics | Materials science | batteries | supercapacitors | solar cell
H-Index Metrics
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H-Index39
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i10 Index88
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Citation Counts5,289
Rankings
Rankings
Corrosion science and engineering | Metallurgy | Electrodeposition | Powder metallurgy | Electroless coatin
H-Index Metrics
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H-Index39
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i10 Index139
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Citation Counts5,524
Rankings
Cancer theranostics nanobiomaterial
H-Index Metrics
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H-Index38
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i10 Index90
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Citation Counts4,466
Rankings
Rankings
Energy Systems | Energy Informatics | Energy Systems' Dynamics | Low Carbon Energy System
H-Index Metrics
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H-Index38
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i10 Index73
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Citation Counts4,521
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