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 02, 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].
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Lithium ion batteries | All Solid State Battery | Na ion and Potassium ion batteries | Cathode for batteries | Li sulfur and Li oxy
H-Index Metrics
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H-Index175
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i10 Index745
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Citation Counts117,635
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Metabolic engineering | synthetic biology | biochemical engineering | bioprocess engineerin
H-Index Metrics
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H-Index158
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i10 Index700
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Citation Counts90,852
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Materials Application | Air Quality | Environmental analysis | Odor VOC | Metal-Organic Framework
H-Index Metrics
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H-Index153
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i10 Index1,155
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Citation Counts114,172
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Marine Biotechnology | Natural Products | Marine Biomaterial
H-Index Metrics
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H-Index135
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i10 Index505
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Citation Counts65,334
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Materials Science | Batteries | First principles calculations | Water splitting | Materials Engineerin
H-Index Metrics
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H-Index128
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i10 Index334
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Citation Counts59,262
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Polymer Membranes | Fuel Cell | Water Electrolysis | Gas Separation | Wa
H-Index Metrics
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H-Index128
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i10 Index517
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Citation Counts54,245
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Photocatalysis | Solar fuel | Advanced oxidation process | Environmental chemistry | Environmental engineerin
H-Index Metrics
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H-Index127
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i10 Index344
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Citation Counts82,016
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machine learning | quantum chemistry | nano science | physical chemistry | condensed matte
H-Index Metrics
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H-Index124
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i10 Index571
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Citation Counts96,911
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