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 06, 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 (1.131.911) 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
electrochemistry | metal phthalocyanines | electrocatalysis | O2 reduction | energy conversio
H-Index Metrics
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H-Index63
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i10 Index192
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Citation Counts12,240
Rankings
environmental biotechnology | bioprocesses | sanitation | membrane technolog
H-Index Metrics
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H-Index45
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i10 Index91
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Citation Counts7,275
Rankings
Chemical Engineering | membrane processes | supercritical fluids | ionic liquids | polymer
H-Index Metrics
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H-Index38
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i10 Index90
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Citation Counts4,169
Rankings
electrochemistry | bioelectrochemistry | electrocatalysts | molecular electrochemistr
H-Index Metrics
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H-Index32
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i10 Index52
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Citation Counts2,822
Rankings
Rankings
Chemical Engineering | Catalysis | Process design and simulatio
H-Index Metrics
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H-Index28
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i10 Index56
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Citation Counts2,138
Rankings
Rankings
Rankings
Chemical Engineering | Heterogeneous catalysis | CO2 valorization | Hydrogen | Biomass upgradin
H-Index Metrics
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H-Index20
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i10 Index26
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Citation Counts2,443
Rankings
Rankings
separation technologies | ionic liquids | green solvent design | liquid-liquid extraction
H-Index Metrics
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H-Index19
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i10 Index33
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Citation Counts1,488
Rankings
Rankings
Electrochemistry | electroanalysis | nanomaterials | (bio)sensor
H-Index Metrics
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H-Index16
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i10 Index21
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Citation Counts795
Rankings
Circular Economy | Urban Metabolism | Sustainability | Process Systems Engineering | Industrial Symbiosi
H-Index Metrics
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H-Index12
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i10 Index14
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Citation Counts852
Rankings
Nanotechnology | Micro-nanomotors | Biosensors | Biomedicine | Electrochemistr
H-Index Metrics
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H-Index12
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i10 Index12
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Citation Counts879
Rankings
Biochemical engineering | Bioprocess | Microbial biotechnolog
H-Index Metrics
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H-Index12
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i10 Index13
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Citation Counts517
Rankings
Rankings
Rankings
Chemical Engineering | Biomass | Gasification | Fast Pyrolysis | Catalysi
H-Index Metrics
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H-Index8
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i10 Index6
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Citation Counts347
Rankings
Rankings
Rankings
Chemical Engineering | Materials Science | Nanotechnology | Fuel Cells | Impedance Spectroscop
H-Index Metrics
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H-Index6
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i10 Index3
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Citation Counts175
Rankings
Rankings
Rankings
Process Optimization | Water Networks | Process Systems Engineerin
H-Index Metrics
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H-Index2
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i10 Index1
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Citation Counts75
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