World Scientist and University Rankings 2025
World Engineering & Technology 417.306 Scientists Subject Rankings - 2025
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 6 years. As of May 21, 2025, 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 (1.121.241) 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 IndexRankings
Ranking Based On Selection: 1
nanogenerator
self-powered sensors/systems
blue energy
piezotronics
piezo-phototronic
Metrics
H-Index
i10 Index
Citation Counts
331
2,515
484,757
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* Total H IndexRankings
Ranking Based On Selection: 2
drug delivery
tissue engineering
biomaterials
nanotechnology
chemistr
Metrics
H-Index
i10 Index
Citation Counts
330
1,897
447,290
* Total H IndexRankings
Ranking Based On Selection: 3
Solar energy conversio
Metrics
H-Index
i10 Index
Citation Counts
312
1,561
509,113
* Total H IndexRankings
Ranking Based On Selection: 4
nanotechnology
energy
environment
2D materials
nanobi
Metrics
H-Index
i10 Index
Citation Counts
285
841
326,460
* Total H IndexRankings
Ranking Based On Selection: 5
microbiome
human microbiome
environmental microbiolog
Metrics
H-Index
i10 Index
Citation Counts
256
846
460,817
* Total H IndexRankings
Ranking Based On Selection: 6
Nanomaterials
Biomedicine
Imaging
Energy
Catalysi
Metrics
H-Index
i10 Index
Citation Counts
255
873
272,243
* Total H IndexRankings
Ranking Based On Selection: 7
Carbon
nanomaterials
energy storage
supercapacitors
MXen
Metrics
H-Index
i10 Index
Citation Counts
248
922
304,300
* Total H IndexRankings
Ranking Based On Selection: 8
Machine learning
deep learning
artificial intelligenc
Metrics
H-Index
i10 Index
Citation Counts
247
935
934,630
* Total H IndexRankings
Ranking Based On Selection: 9
Software Engineering
Computational Biology
HPC
Physic
Metrics
H-Index
i10 Index
Citation Counts
238
1,411
306,066
* Total H IndexRankings
Ranking Based On Selection: 10
biomedical engineering
materials
medicine
mechanical engineering
electrical engineerin
Metrics
H-Index
i10 Index
Citation Counts
237
1,153
222,330
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* Total H IndexRankings
Ranking Based On Selection: 11
Materials Science
Nanotechnology
Chemistry
Physic
Metrics
H-Index
i10 Index
Citation Counts
235
1,150
232,767
* Total H IndexRankings
Ranking Based On Selection: 12
Metrics
H-Index
i10 Index
Citation Counts
233
660
268,887
* Total H IndexRankings
Ranking Based On Selection: 13
Metrics
H-Index
i10 Index
Citation Counts
230
779
192,672
* Total H IndexRankings
Ranking Based On Selection: 14
hollow structures
batteries
electrocatalysis
supercapacitors
photocatalysi
Metrics
H-Index
i10 Index
Citation Counts
229
402
148,851
* Total H IndexRankings
Ranking Based On Selection: 15
medical imaging
machine learning
computer vision
and graphic
Metrics
H-Index
i10 Index
Citation Counts
226
931
197,435
* Total H IndexRankings
Ranking Based On Selection: 16
Materials Scienc
Metrics
H-Index
i10 Index
Citation Counts
224
1,493
227,661
* Total H IndexRankings
Ranking Based On Selection: 17
Statistics
Machine Learning
Renewable Energy
Building Physics
Particle Physic
Metrics
H-Index
i10 Index
Citation Counts
224
714
209,734
* Total H IndexRankings
Ranking Based On Selection: 18
High energy physics
Astroparticle physics
Instrumentatio
Metrics
H-Index
i10 Index
Citation Counts
222
945
241,841
* Total H IndexRankings
Ranking Based On Selection: 19
Biometrics
Computer vision
Pattern recognition
Machine learning
Image processin
Metrics
H-Index
i10 Index
Citation Counts
221
821
278,466
* Total H IndexRankings
Ranking Based On Selection: 20
Electronic
Metrics
H-Index
i10 Index
Citation Counts
218
944
247,322
* Total H IndexRankings
Ranking Based On Selection: 21
biomaterials
drug delivery
chemical engineering
hydrogels
biomedical engineerin
Metrics
H-Index
i10 Index
Citation Counts
218
1,170
232,454
* Total H IndexRankings
Ranking Based On Selection: 22
biosensors
electrochemistry
nanomotors
modified electrodes
microfabricatio
Metrics
H-Index
i10 Index
Citation Counts
216
1,208
179,321
* Total H IndexRankings
Ranking Based On Selection: 23
biomaterials
tissue engineering
silk
regenerative medicin
Metrics
H-Index
i10 Index
Citation Counts
215
1,566
209,347
* Total H IndexRankings
Ranking Based On Selection: 24
machine learning
computer science
statistics
artificial intelligence
optimizatio
Metrics
H-Index
i10 Index
Citation Counts
214
785
324,787
* Total H IndexRankings
Ranking Based On Selection: 25
environmental engineering
membrane separations
environmental nanotechnology
desalination
wate
Metrics
H-Index
i10 Index
Citation Counts
213
570
164,402
Zhong Lin Wang
Metrics
H-Index
i10-Index
Citation Counts
331
2,515
484,757
nanogenerator
self-powered sensors/systems
blue energy
piezotronics
piezo-phototronic
Robert Langer
Metrics
H-Index
i10-Index
Citation Counts
330
1,897
447,290
drug delivery
tissue engineering
biomaterials
nanotechnology
chemistr
Yi Cui
Stanford University
Stanford, United States
Metrics
H-Index
i10-Index
Citation Counts
285
841
326,460
nanotechnology
energy
environment
2D materials
nanobi
Rob Knight
University of California San Diego
San Diego, United States
Metrics
H-Index
i10-Index
Citation Counts
256
846
460,817
microbiome
human microbiome
environmental microbiolog
Younan Xia
Metrics
H-Index
i10-Index
Citation Counts
255
873
272,243
Nanomaterials
Biomedicine
Imaging
Energy
Catalysi
Yury Gogotsi
Drexel University
Philadelphia, United States
Metrics
H-Index
i10-Index
Citation Counts
248
922
304,300
Carbon
nanomaterials
energy storage
supercapacitors
MXen
Yoshua Bengio
Université de Montréal
Montréal, Canada
Metrics
H-Index
i10-Index
Citation Counts
247
935
934,630
Machine learning
deep learning
artificial intelligenc
Thomas Doherty
University of Strathclyde
Glasgow, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
238
1,411
306,066
Software Engineering
Computational Biology
HPC
Physic
John A Rogers
Northwestern University
Evanston, United States
Metrics
H-Index
i10-Index
Citation Counts
237
1,153
222,330
biomedical engineering
materials
medicine
mechanical engineering
electrical engineerin
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Gain insights from detailed performance analyses of scientists across 13 major disciplines, identify your strengths, improve weaknesses, and gain a competitive edge.. Check Your Free Sample Performance Analysis
Ajayan PM
Rice University
Houston, United States
Metrics
H-Index
i10-Index
Citation Counts
235
1,150
232,767
Materials Science
Nanotechnology
Chemistry
Physic
Jens Norskov
Technical University of Denmark
Kongens Lyngby, Denmark
Metrics
H-Index
i10-Index
Citation Counts
233
660
268,887
Zhenan Bao
Stanford University
Stanford, United States
Metrics
H-Index
i10-Index
Citation Counts
230
779
192,672
Xiong Wen David Lou
Nanyang Technological University
Jurong West, Singapore
Metrics
H-Index
i10-Index
Citation Counts
229
402
148,851
hollow structures
batteries
electrocatalysis
supercapacitors
photocatalysi
medical imaging
machine learning
computer vision
and graphic
Kenji Watanabe
Metrics
H-Index
i10-Index
Citation Counts
224
1,493
227,661
Roberto Castello
Metrics
H-Index
i10-Index
Citation Counts
224
714
209,734
Statistics
Machine Learning
Renewable Energy
Building Physics
Particle Physic
Ivica Puljak
University of Split
Split, Croatia
Metrics
H-Index
i10-Index
Citation Counts
222
945
241,841
High energy physics
Astroparticle physics
Instrumentatio
Anil K Jain
Michigan State University
East Lansing, United States
Metrics
H-Index
i10-Index
Citation Counts
221
821
278,466
Biometrics
Computer vision
Pattern recognition
Machine learning
Image processin
Mauro Citterio
Metrics
H-Index
i10-Index
Citation Counts
218
944
247,322
Nicholas A Peppas
Metrics
H-Index
i10-Index
Citation Counts
218
1,170
232,454
biomaterials
drug delivery
chemical engineering
hydrogels
biomedical engineerin
Joseph Wang
University of California San Diego
San Diego, United States
Metrics
H-Index
i10-Index
Citation Counts
216
1,208
179,321
biosensors
electrochemistry
nanomotors
modified electrodes
microfabricatio
David L Kaplan
Tufts University
Medford, United States
Metrics
H-Index
i10-Index
Citation Counts
215
1,566
209,347
biomaterials
tissue engineering
silk
regenerative medicin
Michael I Jordan
Metrics
H-Index
i10-Index
Citation Counts
214
785
324,787
machine learning
computer science
statistics
artificial intelligence
optimizatio
Menachem Elimelech
Rice University
Houston, United States
Metrics
H-Index
i10-Index
Citation Counts
213
570
164,402
environmental engineering
membrane separations
environmental nanotechnology
desalination
wate