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 03, 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
Rankings
Energy | Materials Engineering | Renewable Energy | Composite Material
H-Index Metrics
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H-Index36
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i10 Index81
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Citation Counts3,917
Rankings
Energy Conversion | Geothermal Energy | Thermodynamic Analysis | Renewable Energy | Energy Educatio
H-Index Metrics
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H-Index33
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i10 Index73
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Citation Counts4,247
Rankings
Rankings
Rankings
Renewable Energy | Energy Storage | Sustainability and the Environmen
H-Index Metrics
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H-Index28
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i10 Index81
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Citation Counts2,305
Rankings
Rankings
Heterogeneous catalysis | Pump-probe spectroscopy | Synchrotron spectroscop
H-Index Metrics
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H-Index27
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i10 Index48
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Citation Counts1,776
Rankings
Renewable Energy | Control System | Modeling | Robotic | Aeronauti
H-Index Metrics
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H-Index25
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i10 Index144
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Citation Counts3,284
Rankings
Rankings
Disaster Risk Reduction | Climate Policy | Spatial Planning | Renewable Energy | Community Resilienc
H-Index Metrics
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H-Index24
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i10 Index58
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Citation Counts2,318
Rankings
Rankings
Solar Thermal Systems | Solar Drying System | Heat Pump | Solar Water Heating | Renewable Energy Technolog
H-Index Metrics
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H-Index23
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i10 Index47
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Citation Counts2,229
Rankings
Perovskite solar cells | Supercapacitors | Solar-steam generatio
H-Index Metrics
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H-Index21
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i10 Index32
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Citation Counts1,666
Rankings
Rankings
Bioenergy | renewable energy | thermal process engineerin
H-Index Metrics
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H-Index21
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i10 Index38
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Citation Counts2,340
Rankings
Rankings
Grid Forming Inverter | Grid Following Inverter | Power System Dynamics and Stability | Renewabl
H-Index Metrics
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H-Index20
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i10 Index35
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Citation Counts1,060
Rankings
Pirolisis Biomassa | Pengolahan Limbah | Renewable energy | Fitoremediasi | Fertilizer dari Sekam Pad
H-Index Metrics
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H-Index19
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i10 Index31
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Citation Counts1,445
Rankings
Energy Education | Renewable Energy | Engineering Educatio
H-Index Metrics
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H-Index19
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i10 Index27
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Citation Counts1,439
Rankings
Rankings
Renewable energy | Bioenergy | Waste to energy | Pyrolysis | Gasificatio
H-Index Metrics
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H-Index19
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i10 Index29
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Citation Counts2,318
Rankings
energy engineering | solar PV & PVT | energy efficiency | industrial productivity | project managemen
H-Index Metrics
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H-Index18
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i10 Index28
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Citation Counts837
Rankings
Rankings
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