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World Scientist and University Rankings 2026
Portugal Engineering & Technology 1.484 Scientists Subject Rankings
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 (1.131.755) 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].
* Total H Index Rankings
Rankings
1,491
World Rank
8
Country Rank
2
University
Ranking Based On Selection:
1
Engineering & Technology / Biomaterials and Tissue Engineering
tissue engineering | regenerative medicine | biomaterials | stem cells | biomedical engineerin
tissue engineering | regenerative medicine | biomaterials | stem cells | biomedical engineerin
H-Index Metrics
-
H-Index164
-
i10 Index1,375
-
Citation Counts126,435
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* Total H Index Rankings
Rankings
4,175
World Rank
10
Country Rank
1
University
Ranking Based On Selection:
2
Engineering & Technology / Computer Science
Sensor Networks and IoT | eHealth and mHealth | Vehicular Networks | Mobile and Cloud Computin
Sensor Networks and IoT | eHealth and mHealth | Vehicular Networks | Mobile and Cloud Computin
H-Index Metrics
-
H-Index127
-
i10 Index844
-
Citation Counts60,188
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* Total H Index Rankings
Rankings
6,008
World Rank
13
Country Rank
3
University
Ranking Based On Selection:
3
Engineering & Technology / Food Science and Engineering
Food technology and food processing (edible films and coatings | nanotechnology applied to films and coatings formulation | ohmi
Food technology and food processing (edible films and coatings | nanotechnology applied to films and coatings formulation | ohmi
H-Index Metrics
-
H-Index116
-
i10 Index466
-
Citation Counts47,298
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* Total H Index Rankings
Rankings
8,579
World Rank
17
Country Rank
1
University
Ranking Based On Selection:
4
Engineering & Technology / Metallurgical & Materials Engineering
Engenharia de Materiais | Materials Science | Electrochemistr
Engenharia de Materiais | Materials Science | Electrochemistr
H-Index Metrics
-
H-Index106
-
i10 Index317
-
Citation Counts35,508
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* Total H Index Rankings
Rankings
8,833
World Rank
18
Country Rank
2
University
Ranking Based On Selection:
5
Engineering & Technology / Metallurgical & Materials Engineering
Transparent electronics | Paper electronics | Biosensors | Chromogenic materials | Microelectronic
Transparent electronics | Paper electronics | Biosensors | Chromogenic materials | Microelectronic
H-Index Metrics
-
H-Index105
-
i10 Index622
-
Citation Counts47,824
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* Total H Index Rankings
Rankings
8,845
World Rank
19
Country Rank
3
University
Ranking Based On Selection:
6
* Total H Index Rankings
Rankings
9,152
World Rank
20
Country Rank
5
University
Ranking Based On Selection:
7
Engineering & Technology / Civil Engineering
Structural Engineering | Masonry | Conservation | Earthquake Engineering | Historical Constructio
Structural Engineering | Masonry | Conservation | Earthquake Engineering | Historical Constructio
H-Index Metrics
-
H-Index104
-
i10 Index646
-
Citation Counts45,913
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* Total H Index Rankings
Rankings
10,227
World Rank
23
Country Rank
5
University
Ranking Based On Selection:
8
* Total H Index Rankings
Rankings
10,232
World Rank
24
Country Rank
5
University
Ranking Based On Selection:
9
Engineering & Technology / Earth Sciences
Geoscience | Climatology | Hydrology | Environmental Sciences | Astronom
Geoscience | Climatology | Hydrology | Environmental Sciences | Astronom
H-Index Metrics
-
H-Index101
-
i10 Index303
-
Citation Counts39,696
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* Total H Index Rankings
Rankings
22,696
World Rank
66
Country Rank
8
University
Ranking Based On Selection:
10
Engineering & Technology / Biomaterials and Tissue Engineering
Tissue Engineering | Tendon tissue regeneration | magnetic based tissue engineering | 3D bioprintin
Tissue Engineering | Tendon tissue regeneration | magnetic based tissue engineering | 3D bioprintin
H-Index Metrics
-
H-Index81
-
i10 Index262
-
Citation Counts23,913
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* Total H Index Rankings
Rankings
23,290
World Rank
67
Country Rank
9
University
Ranking Based On Selection:
11
Engineering & Technology / Metallurgical & Materials Engineering
Biomaterials Science | Bioprinting | Nanotechnology | Tissue Eng.& Regenerative Med. | ln vitro model
Biomaterials Science | Bioprinting | Nanotechnology | Tissue Eng.& Regenerative Med. | ln vitro model
H-Index Metrics
-
H-Index80
-
i10 Index303
-
Citation Counts24,046
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* Total H Index Rankings
Rankings
23,492
World Rank
68
Country Rank
5
University
Ranking Based On Selection:
12
Engineering & Technology / Metallurgical & Materials Engineering
Materials Science | Waste recycling | Sustainable use of resource
Materials Science | Waste recycling | Sustainable use of resource
H-Index Metrics
-
H-Index80
-
i10 Index326
-
Citation Counts23,338
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* Total H Index Rankings
Rankings
29,346
World Rank
81
Country Rank
19
University
Ranking Based On Selection:
13
Engineering & Technology / Computer Science
machine learning | optimization | signal and image processing | information theory | causalit
machine learning | optimization | signal and image processing | information theory | causalit
H-Index Metrics
-
H-Index75
-
i10 Index186
-
Citation Counts37,300
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* Total H Index Rankings
Rankings
31,859
World Rank
93
Country Rank
4
University
Ranking Based On Selection:
14
Engineering & Technology / Food Science and Engineering
Food Microbiology | Food Safety | Listeria monocytogenes | Listeriosis | Biocontro
Food Microbiology | Food Safety | Listeria monocytogenes | Listeriosis | Biocontro
H-Index Metrics
-
H-Index73
-
i10 Index253
-
Citation Counts19,471
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* Total H Index Rankings
Rankings
32,773
World Rank
98
Country Rank
3
University
Ranking Based On Selection:
15
Engineering & Technology / Bioengineering
Biomaterials | Tissue Engineering | Wound Healing | Nanomaterials | Drug Deliver
Biomaterials | Tissue Engineering | Wound Healing | Nanomaterials | Drug Deliver
H-Index Metrics
-
H-Index72
-
i10 Index168
-
Citation Counts17,069
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* Total H Index Rankings
Rankings
33,592
World Rank
101
Country Rank
3
University
Ranking Based On Selection:
16
Engineering & Technology / Environmental Science & Engineering
Environmetal Sciences | Marine Sciences | Ecotoxicology | Analytical Chemistry | Nanoparticle
Environmetal Sciences | Marine Sciences | Ecotoxicology | Analytical Chemistry | Nanoparticle
H-Index Metrics
-
H-Index72
-
i10 Index211
-
Citation Counts17,006
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* Total H Index Rankings
Rankings
34,455
World Rank
107
Country Rank
9
University
Ranking Based On Selection:
17
Engineering & Technology / Metallurgical & Materials Engineering
Biomaterials | Smart Materials | Piezoelectric Properties | Polymer Characterization | Electroactive Propertie
Biomaterials | Smart Materials | Piezoelectric Properties | Polymer Characterization | Electroactive Propertie
H-Index Metrics
-
H-Index71
-
i10 Index169
-
Citation Counts16,196
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* Total H Index Rankings
Rankings
34,999
World Rank
108
Country Rank
10
University
Ranking Based On Selection:
18
Engineering & Technology / Electrical & Electronic Engineering
Luminescence | Organic-Inorganic Hybrids | Photonics | Solar Energy | Optical Sensor
Luminescence | Organic-Inorganic Hybrids | Photonics | Solar Energy | Optical Sensor
H-Index Metrics
-
H-Index71
-
i10 Index322
-
Citation Counts19,985
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* Total H Index Rankings
Rankings
35,622
World Rank
110
Country Rank
3
University
Ranking Based On Selection:
19
Engineering & Technology / Mechanical Engineering
Coatings | Tribology | Materials | Manufacturing | Lea
Coatings | Tribology | Materials | Manufacturing | Lea
H-Index Metrics
-
H-Index70
-
i10 Index251
-
Citation Counts14,819
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* Total H Index Rankings
Rankings
36,054
World Rank
113
Country Rank
25
University
Ranking Based On Selection:
20
Engineering & Technology / Computer Science
Artificial Intelligence | Human-Robot Interaction | Virtual Agents | Multiagent Systems | Affective Computin
Artificial Intelligence | Human-Robot Interaction | Virtual Agents | Multiagent Systems | Affective Computin
H-Index Metrics
-
H-Index70
-
i10 Index327
-
Citation Counts20,158
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* Total H Index Rankings
Rankings
37,973
World Rank
118
Country Rank
14
University
Ranking Based On Selection:
21
Engineering & Technology / Chemical Engineering
Chemical Engineering | Membrane Science and Engineering | Bioengineerin
Chemical Engineering | Membrane Science and Engineering | Bioengineerin
H-Index Metrics
-
H-Index69
-
i10 Index282
-
Citation Counts16,178
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* Total H Index Rankings
Rankings
39,124
World Rank
122
Country Rank
17
University
Ranking Based On Selection:
22
Engineering & Technology / Civil Engineering
Civil engineering | Eco-efficient construction and building material
Civil engineering | Eco-efficient construction and building material
H-Index Metrics
-
H-Index68
-
i10 Index152
-
Citation Counts17,973
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* Total H Index Rankings
Rankings
39,341
World Rank
123
Country Rank
4
University
Ranking Based On Selection:
23
Engineering & Technology / Electrical & Electronic Engineering
Power Systems | Smart grids | Artificial Intelligence | Demand response | Electricity Market
Power Systems | Smart grids | Artificial Intelligence | Demand response | Electricity Market
H-Index Metrics
-
H-Index68
-
i10 Index442
-
Citation Counts21,488
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* Total H Index Rankings
Rankings
40,238
World Rank
126
Country Rank
27
University
Ranking Based On Selection:
24
Engineering & Technology / Metallurgical & Materials Engineering
Charged particle interactions with solids | ion beam analysis and materials processin
Charged particle interactions with solids | ion beam analysis and materials processin
H-Index Metrics
-
H-Index68
-
i10 Index494
-
Citation Counts20,553
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* Total H Index Rankings
Rankings
41,350
World Rank
128
Country Rank
19
University
Ranking Based On Selection:
25
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