University, Subject, Country, Region, World
National Institute of Standards and Technology 43 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 31, 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 (870.053) 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
Solid State Chemistry
Complex Hydrides and Oxides
Novel Porous Materials
X-ray and Neutron Diffraction
Neutron Scattering
Metrics
H-Index
i10 Index
Citation Counts
85
197
28,763
* Total H IndexRankings
Ranking Based On Selection: 2
chemistry
Metrics
H-Index
i10 Index
Citation Counts
71
155
23,559
* Total H IndexRankings
Ranking Based On Selection: 3
chemistry
physics
materials science
Metrics
H-Index
i10 Index
Citation Counts
69
161
17,987
* Total H IndexRankings
Ranking Based On Selection: 4
Chemical Kinetics
Thermodynamics
Atmospheric Chemistry
Free Radical Chemistry
Metrics
H-Index
i10 Index
Citation Counts
63
159
23,176
* Total H IndexRankings
Ranking Based On Selection: 5
chemistry
physics
chemical engineering
Metrics
H-Index
i10 Index
Citation Counts
60
161
21,186
* Total H IndexRankings
Ranking Based On Selection: 6
chemistry
chemical engineering
analytical chemistry
forensic science
renewable fuels
Metrics
H-Index
i10 Index
Citation Counts
56
211
29,686
* Total H IndexRankings
Ranking Based On Selection: 7
materials chemistry
nanotechnology
regulatory science
nanobiotechnology
particle metrology
Metrics
H-Index
i10 Index
Citation Counts
53
105
7,861
* Total H IndexRankings
Ranking Based On Selection: 8
Environmental Chemistry
Metrics
H-Index
i10 Index
Citation Counts
53
103
7,608
* Total H IndexRankings
Ranking Based On Selection: 9
Trace Explosives Detection
Mass Spectrometry
SIMS
Inkjet Printing
Metrics
H-Index
i10 Index
Citation Counts
37
78
4,967
* Total H IndexRankings
Ranking Based On Selection: 10
Thermophysics
Chemical Engineering
Metrics
H-Index
i10 Index
Citation Counts
34
72
3,902
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* Total H IndexRankings
Ranking Based On Selection: 11
biophysics
analytical chemistry
biosensors
electrochemistry
nanopores
Metrics
H-Index
i10 Index
Citation Counts
32
42
3,882
* Total H IndexRankings
Ranking Based On Selection: 12
Nanomaterials
Surface Analysis
XPS
Surface Chemistry
Metrics
H-Index
i10 Index
Citation Counts
31
49
3,285
* Total H IndexRankings
Ranking Based On Selection: 13
Advanced EPR spectroscopy
biophysical chemistry
metal ions in biological systems
Metrics
H-Index
i10 Index
Citation Counts
31
51
4,958
* Total H IndexRankings
Ranking Based On Selection: 14
phototoxicity
spectroscopy
nanotechnology standards
oxidative stress
Metrics
H-Index
i10 Index
Citation Counts
28
57
2,865
* Total H IndexRankings
Ranking Based On Selection: 15
analytical chemistry
Metrics
H-Index
i10 Index
Citation Counts
27
37
2,398
* Total H IndexRankings
Ranking Based On Selection: 16
Mass Spectrometry
Analytical Chemistry
Forensic Science
Metrics
H-Index
i10 Index
Citation Counts
25
53
1,951
* Total H IndexRankings
Ranking Based On Selection: 17
MRI
NMR
Hyperpolarization
Low field MRI
Metrics
H-Index
i10 Index
Citation Counts
24
34
1,800
* Total H IndexRankings
Ranking Based On Selection: 18
Analytical Chemistry
Metrics
H-Index
i10 Index
Citation Counts
24
38
1,680
* Total H IndexRankings
Ranking Based On Selection: 19
theoretical and computational chemistry - biophysical chemistry - structural biology
Metrics
H-Index
i10 Index
Citation Counts
23
25
2,280
* Total H IndexRankings
Ranking Based On Selection: 20
Chemical Physics
Optics
Laser Spectroscopy
Atmospheric Chemistry
Metrics
H-Index
i10 Index
Citation Counts
22
40
3,389
* Total H IndexRankings
Ranking Based On Selection: 21
SIMS
Mass Spectrometry
Bioimaging
Nanoparticle
Surface Chemistry
Metrics
H-Index
i10 Index
Citation Counts
22
30
1,350
* Total H IndexRankings
Ranking Based On Selection: 22
Atmospheric Chemistry
Metrics
H-Index
i10 Index
Citation Counts
21
25
2,108
* Total H IndexRankings
Ranking Based On Selection: 23
Mass Spectrometry
Analytical Chemistry
Metabolomics
Precision Medicine
Metrology
Metrics
H-Index
i10 Index
Citation Counts
21
28
1,962
* Total H IndexRankings
Ranking Based On Selection: 24
analytical chemistry
nanoscience and nanotechnology
Metrics
H-Index
i10 Index
Citation Counts
20
25
1,516
* Total H IndexRankings
Ranking Based On Selection: 25
Analytical Chemistry
Environmental
Polycyclic Aromatic Hydrocarbons
Metrics
H-Index
i10 Index
Citation Counts
20
44
1,107
Hui Wu
Metrics
H-Index
i10-Index
Citation Counts
85
197
28,763
Solid State Chemistry
Complex Hydrides and Oxides
Novel Porous Materials
X-ray and Neutron Diffraction
Neutron Scattering
Stephen E Stein
Metrics
H-Index
i10-Index
Citation Counts
71
155
23,559
Lee J Richter
Metrics
H-Index
i10-Index
Citation Counts
69
161
17,987
chemistry
physics
materials science
Robert Huie
Metrics
H-Index
i10-Index
Citation Counts
63
159
23,176
Chemical Kinetics
Thermodynamics
Atmospheric Chemistry
Free Radical Chemistry
Marcia Huber
Metrics
H-Index
i10-Index
Citation Counts
60
161
21,186
chemistry
physics
chemical engineering
Tom Bruno
Metrics
H-Index
i10-Index
Citation Counts
56
211
29,686
chemistry
chemical engineering
analytical chemistry
forensic science
renewable fuels
Vincent A Hackley
Metrics
H-Index
i10-Index
Citation Counts
53
105
7,861
materials chemistry
nanotechnology
regulatory science
nanobiotechnology
particle metrology
John Kucklick
Metrics
H-Index
i10-Index
Citation Counts
53
103
7,608
Gillen G Or Gillen J Or Gillen Jg Or Gillen Greg Or Gillen J Greg Or Gillen John G
Metrics
H-Index
i10-Index
Citation Counts
37
78
4,967
Trace Explosives Detection
Mass Spectrometry
SIMS
Inkjet Printing
Vladimir Diky
Metrics
H-Index
i10-Index
Citation Counts
34
72
3,902
Thermophysics
Chemical Engineering
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Joseph Robertson
Metrics
H-Index
i10-Index
Citation Counts
32
42
3,882
biophysics
analytical chemistry
biosensors
electrochemistry
nanopores
Justin Gorham
Metrics
H-Index
i10-Index
Citation Counts
31
49
3,285
Nanomaterials
Surface Analysis
XPS
Surface Chemistry
Veronika Szalai
Metrics
H-Index
i10-Index
Citation Counts
31
51
4,958
Advanced EPR spectroscopy
biophysical chemistry
metal ions in biological systems
Vytas Reipa
Metrics
H-Index
i10-Index
Citation Counts
28
57
2,865
phototoxicity
spectroscopy
nanotechnology standards
oxidative stress
Jessica L Reiner
Metrics
H-Index
i10-Index
Citation Counts
27
37
2,398
Edward Sisco
Metrics
H-Index
i10-Index
Citation Counts
25
53
1,951
Mass Spectrometry
Analytical Chemistry
Forensic Science
Karl Stupic
Metrics
H-Index
i10-Index
Citation Counts
24
34
1,800
MRI
NMR
Hyperpolarization
Low field MRI
Michael Epstein
Metrics
H-Index
i10-Index
Citation Counts
24
38
1,680
Demian Riccardi
Metrics
H-Index
i10-Index
Citation Counts
23
25
2,280
theoretical and computational chemistry - biophysical chemistry - structural biology
Adam J Fleisher
Metrics
H-Index
i10-Index
Citation Counts
22
40
3,389
Chemical Physics
Optics
Laser Spectroscopy
Atmospheric Chemistry
Christopher Szakal
Metrics
H-Index
i10-Index
Citation Counts
22
30
1,350
SIMS
Mass Spectrometry
Bioimaging
Nanoparticle
Surface Chemistry
Eleanor Waxman
Metrics
H-Index
i10-Index
Citation Counts
21
25
2,108
Christina M Jones
Metrics
H-Index
i10-Index
Citation Counts
21
28
1,962
Mass Spectrometry
Analytical Chemistry
Metabolomics
Precision Medicine
Metrology
Antonio Rafael Montoro Bustos
Metrics
H-Index
i10-Index
Citation Counts
20
25
1,516
analytical chemistry
nanoscience and nanotechnology
Walter B Wilson
Metrics
H-Index
i10-Index
Citation Counts
20
44
1,107
Analytical Chemistry
Environmental
Polycyclic Aromatic Hydrocarbons