World Scientist and University Rankings 2025
United States Engineering & Technology 1.655 Scientists Subject Rankings - 2025
The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 197 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 Jan 28, 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 (873.688) 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
drug delivery
tissue engineering
biomaterials
nanotechnology
chemistry
Metrics
H-Index
i10 Index
Citation Counts
328
1,898
441,116
* Total H IndexRankings
Ranking Based On Selection: 2
microbial diversity
microbiome
environmental microbiology
Metrics
H-Index
i10 Index
Citation Counts
253
828
445,219
* Total H IndexRankings
Ranking Based On Selection: 3
biomaterials
tissue engineering
silk
regenerative medicine
Metrics
H-Index
i10 Index
Citation Counts
212
1,546
202,797
* Total H IndexRankings
Ranking Based On Selection: 4
bioengineering & cell biology
Metrics
H-Index
i10 Index
Citation Counts
195
506
155,537
* Total H IndexRankings
Ranking Based On Selection: 5
cancer
bioengineering
proteomics
Metrics
H-Index
i10 Index
Citation Counts
190
867
263,173
* Total H IndexRankings
Ranking Based On Selection: 6
Biomaterials
Drug Delivery
Nanotechnology
Regenerative Medicine
Tissue Engineering
Metrics
H-Index
i10 Index
Citation Counts
169
611
108,795
* Total H IndexRankings
Ranking Based On Selection: 7
Bioengineering
Metrics
H-Index
i10 Index
Citation Counts
158
509
92,289
* Total H IndexRankings
Ranking Based On Selection: 8
biomaterials
gene delivery
nanomedicine
Metrics
H-Index
i10 Index
Citation Counts
152
477
95,821
* Total H IndexRankings
Ranking Based On Selection: 9
Photonics
Nanobioengineering
Nanoscience
Nanochemistry
Biophotonics
Metrics
H-Index
i10 Index
Citation Counts
141
772
89,734
* Total H IndexRankings
Ranking Based On Selection: 10
Drug Delivery
Bioengineering
Pharmaceutics
immunoengineering
biotechnology
Metrics
H-Index
i10 Index
Citation Counts
135
362
72,703
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* Total H IndexRankings
Ranking Based On Selection: 11
Biomaterials
Tissue Engineering
Bioengineering
Hydrogels
Metrics
H-Index
i10 Index
Citation Counts
132
304
60,228
* Total H IndexRankings
Ranking Based On Selection: 12
bioengineering
systems biology
computational biology
Metrics
H-Index
i10 Index
Citation Counts
131
387
64,453
* Total H IndexRankings
Ranking Based On Selection: 13
Muscle
Rehabilitation
Biomechanics
Bioengineering
Locomotion
Metrics
H-Index
i10 Index
Citation Counts
129
333
61,796
* Total H IndexRankings
Ranking Based On Selection: 14
bioengineering
Metrics
H-Index
i10 Index
Citation Counts
126
276
59,200
* Total H IndexRankings
Ranking Based On Selection: 15
biomaterials
tissue engineering
biosurface science
Metrics
H-Index
i10 Index
Citation Counts
122
446
58,167
* Total H IndexRankings
Ranking Based On Selection: 16
Drug delivery
nanomedicine
polymers
biomaterials
bioengineering
Metrics
H-Index
i10 Index
Citation Counts
118
365
54,307
* Total H IndexRankings
Ranking Based On Selection: 17
neurotechnology
bioengineering
neuroscience
expansion microscopy
optogenetics
Metrics
H-Index
i10 Index
Citation Counts
114
445
64,208
* Total H IndexRankings
Ranking Based On Selection: 18
Cryo-Electron Microscopy and Tomography
Biophysics
Metrics
H-Index
i10 Index
Citation Counts
113
403
46,456
* Total H IndexRankings
Ranking Based On Selection: 19
Bioengineering
Global health
Metrics
H-Index
i10 Index
Citation Counts
112
399
41,010
* Total H IndexRankings
Ranking Based On Selection: 20
bioengineering
cell and molecular biology
stem cell engineering
drug delivery systems
mechanotransduction
Metrics
H-Index
i10 Index
Citation Counts
110
268
86,230
* Total H IndexRankings
Ranking Based On Selection: 21
human-computer interaction
collaboration
human-robot interaction
social computing
online communities
Metrics
H-Index
i10 Index
Citation Counts
109
231
83,481
* Total H IndexRankings
Ranking Based On Selection: 22
diabetes
bioengineering
tissue engineering
microfluidics
wound healing
Metrics
H-Index
i10 Index
Citation Counts
106
323
53,075
* Total H IndexRankings
Ranking Based On Selection: 23
biomaterials
regenerative medicine
cell adhesion
mechanotransduction
Metrics
H-Index
i10 Index
Citation Counts
106
276
34,551
* Total H IndexRankings
Ranking Based On Selection: 24
Drug delivery systems
Self-Assembly of Macromolecules
Biomaterials
Polymers
Hydrogels
Metrics
H-Index
i10 Index
Citation Counts
105
418
40,139
* Total H IndexRankings
Ranking Based On Selection: 25
bioengineering
biomechanics
bone
osteoporosis
mechanobiology
Metrics
H-Index
i10 Index
Citation Counts
104
265
44,216
Robert Langer
Metrics
H-Index
i10-Index
Citation Counts
328
1,898
441,116
drug delivery
tissue engineering
biomaterials
nanotechnology
chemistry
Rob Knight
University of California San Diego
San Diego, United States
Metrics
H-Index
i10-Index
Citation Counts
253
828
445,219
microbial diversity
microbiome
environmental microbiology
David L Kaplan
Tufts University
Medford, United States
Metrics
H-Index
i10-Index
Citation Counts
212
1,546
202,797
biomaterials
tissue engineering
silk
regenerative medicine
Donald Ingber
Harvard University
Cambridge, United States
Metrics
H-Index
i10-Index
Citation Counts
195
506
155,537
bioengineering & cell biology
Lance Liotta
George Mason University
Fairfax, United States
Metrics
H-Index
i10-Index
Citation Counts
190
867
263,173
cancer
bioengineering
proteomics
Antonios G Mikos
Rice University
Houston, United States
Metrics
H-Index
i10-Index
Citation Counts
169
611
108,795
Biomaterials
Drug Delivery
Nanotechnology
Regenerative Medicine
Tissue Engineering
Jeffrey Hubbell
University of Chicago
Chicago, United States
Metrics
H-Index
i10-Index
Citation Counts
158
509
92,289
Daniel G Anderson
Metrics
H-Index
i10-Index
Citation Counts
152
477
95,821
biomaterials
gene delivery
nanomedicine
Paras N Prasad
University at Buffalo
Buffalo, United States
Metrics
H-Index
i10-Index
Citation Counts
141
772
89,734
Photonics
Nanobioengineering
Nanoscience
Nanochemistry
Biophotonics
Samir Mitragotri
Harvard University
Cambridge, United States
Metrics
H-Index
i10-Index
Citation Counts
135
362
72,703
Drug Delivery
Bioengineering
Pharmaceutics
immunoengineering
biotechnology
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Jason A Burdick
University of Pennsylvania
Philadelphia, United States
Metrics
H-Index
i10-Index
Citation Counts
132
304
60,228
Biomaterials
Tissue Engineering
Bioengineering
Hydrogels
Douglas Lauffenburger
Metrics
H-Index
i10-Index
Citation Counts
131
387
64,453
bioengineering
systems biology
computational biology
Scott Delp
Stanford University
Stanford, United States
Metrics
H-Index
i10-Index
Citation Counts
129
333
61,796
Muscle
Rehabilitation
Biomechanics
Bioengineering
Locomotion
Van C Mow
Columbia University New York
New York, United States
Metrics
H-Index
i10-Index
Citation Counts
126
276
59,200
Buddy Ratner
University of Washington
Seattle, United States
Metrics
H-Index
i10-Index
Citation Counts
122
446
58,167
biomaterials
tissue engineering
biosurface science
Alexander Kabanov
University of North Carolina Chapel Hill
Chapel Hill, United States
Metrics
H-Index
i10-Index
Citation Counts
118
365
54,307
Drug delivery
nanomedicine
polymers
biomaterials
bioengineering
Ed Boyden
Metrics
H-Index
i10-Index
Citation Counts
114
445
64,208
neurotechnology
bioengineering
neuroscience
expansion microscopy
optogenetics
Wah Chiu
Stanford University
Stanford, United States
Metrics
H-Index
i10-Index
Citation Counts
113
403
46,456
Cryo-Electron Microscopy and Tomography
Biophysics
Rebecca Richards Kortum
Rice University
Houston, United States
Metrics
H-Index
i10-Index
Citation Counts
112
399
41,010
Bioengineering
Global health
Dennis Discher
University of Pennsylvania
Philadelphia, United States
Metrics
H-Index
i10-Index
Citation Counts
110
268
86,230
bioengineering
cell and molecular biology
stem cell engineering
drug delivery systems
mechanotransduction
Sara Kiesler
Carnegie Mellon University
Pittsburgh, United States
Metrics
H-Index
i10-Index
Citation Counts
109
231
83,481
human-computer interaction
collaboration
human-robot interaction
social computing
online communities
Geoffrey C Gurtner
Stanford University
Stanford, United States
Metrics
H-Index
i10-Index
Citation Counts
106
323
53,075
diabetes
bioengineering
tissue engineering
microfluidics
wound healing
Andres J Garcia
Metrics
H-Index
i10-Index
Citation Counts
106
276
34,551
biomaterials
regenerative medicine
cell adhesion
mechanotransduction
Jindrich Kopecek
University of Utah
Salt Lake City, United States
Metrics
H-Index
i10-Index
Citation Counts
105
418
40,139
Drug delivery systems
Self-Assembly of Macromolecules
Biomaterials
Polymers
Hydrogels
Clinton Rubin
Stony Brook University
Stony Brook, United States
Metrics
H-Index
i10-Index
Citation Counts
104
265
44,216
bioengineering
biomechanics
bone
osteoporosis
mechanobiology