Top 100 Scientists

World Top 100 Scientists 2025

Top 100 scientists can be ranked globally or specific to the following regions including Africa, Asia, Europe, North America, Latin America, Oceania, Arab League, ASEAN, EECA, and BRICS based on total H-index scores without any breakdown by subject areas. Top 100 rankings in the world, in a continent, or a region include standardized subjects areas of Agriculture & Forestry, Arts, Design and Architecture, Business & Management, Economics & Econometrics, Education, Engineering & Technology, History, Philosophy, Theology, Law/Law and Legal Studies, Medical and Health Sciences, Natural Sciences, Social Sciences, Art and Humanities Rankings and Social Sciences and Humanities Rankings BETA VERSION. Subject field ranking in world, region, country and university is beta version since subject field "others" (870,057 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded, so the ranking will change as the others fields are edited. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.

* Rankings
Ranking Based On Selection: 1
Yujie Sun
Inorganic Chemistry
Electrochemistry
Photochemistry
Metrics
H-Index
i10 Index
Citation
59
85
17,576
Ryan J White
Electrochemistry
Analytical Chemistry
Nanoscience
Metrics
H-Index
i10 Index
Citation
43
76
6,279
Guanqun Han
electro/photocatalysis
organic transformations
hydrogen production
biomass upgrading
Metrics
H-Index
i10 Index
Citation
41
59
5,353
Bruce Ault
Physical Chemistry
Spectroscopy
Molecular Structure
Matrix Isolation
Metrics
H-Index
i10 Index
Citation
41
171
6,290
Hairong Guan
catalysis
organometallic chemistry
reaction mechanisms
metal hydrides
Metrics
H-Index
i10 Index
Citation
33
53
5,948
Joo Youp Lee
Catalysis and Reaction Engineering
Separations
Gene and Drug Delivery
Metrics
H-Index
i10 Index
Citation
27
42
2,173
* Rankings
Ranking Based On Selection: 10
Laura Sagle
nanoscience
LSPR and SERS
nano-biology
nanobiotechnology
Metrics
H-Index
i10 Index
Citation
25
30
3,358

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* Rankings
Ranking Based On Selection: 11
Devaiah Damma
Heterogeneous Catalysis
Environmental
Hydrogen Generation
Syngas Conversion
CO2 Conversion
Metrics
H-Index
i10 Index
Citation
24
31
1,647
* Rankings
Ranking Based On Selection: 16
Ashley E Ross
Analytical chemistry
neuroscience
electrochemistry
microfluidics
immunology
Metrics
H-Index
i10 Index
Citation
20
27
1,300
* Rankings
Ranking Based On Selection: 17
Aruna Wijeratne
Mass Spectrometry
Chemical Proteomics
Bioanalytical Chemistry
Separation Sciences
Metrics
H-Index
i10 Index
Citation
18
24
1,031
* Rankings
Ranking Based On Selection: 20
In Kwon Kim
Mechanism and Drug Discovery of ADP-ribosylation Cycle
Metrics
H-Index
i10 Index
Citation
17
20
1,127
* Rankings
Ranking Based On Selection: 21
Ramana Reddy Mittapalli
Organic Synthesis
Bio-Organic and Medicinal Chemistry
Drug Discovery
Process Development
Total Synthesis of Natural Products
Metrics
H-Index
i10 Index
Citation
14
19
723
* Rankings
Ranking Based On Selection: 23
Xuefei Guo
Method Development&Validation
Sensors
Bioanalytical Chemistry
ICP-MS
LC-MS
Metrics
H-Index
i10 Index
Citation
12
12
1,021
Michael T Cryan
Chemistry
Bioanalytical chemistry
Neurochemistry
Electrochemistry
Microfluidics
Metrics
H-Index
i10 Index
Citation
8
6
193
Xian Cao
Photon Upconversion
Analytical Chemistry
Photochemistry
Nanomaterials
Metrics
H-Index
i10 Index
Citation
7
7
417
Ashwin Chaturvedi
organic synthesis
electrocatalysis
materials chemistry
Metrics
H-Index
i10 Index
Citation
7
6
112
Colby E Witt
Analytical Chemistry
Bioanalytical Chemistry
Neurochemistry
Metrics
H-Index
i10 Index
Citation
6
5
196
Andrew E Eisenhart
Computational Chemistry
High-Performance Computing
Machine Learning
Metrics
H-Index
i10 Index
Citation
4
2
60
Der Vang
SERS
Nanoparticles
Nanostars
Synthesis
Chemistry
Metrics
H-Index
i10 Index
Citation
3
1
28
Madolynn R Johnson
Pharmacology
Toxicology
Biochemistry
Organic Chemistry
Polymer Chemistry
Metrics
H-Index
i10 Index
Citation
2
1
18
Noorul Bashar
Photocatalysis
PCET
Inorganic & organic chemistry
Nanomaterials
Metrics
H-Index
i10 Index
Citation
2
1
17
Leanna J Patton
organic chemistry
photochemistry
crystallography
dynamic crystals
physical organic chemistry
Metrics
H-Index
i10 Index
Citation
1
0
9
Sarbeshwar Ojha
Fast Scan Cyclic Voltammetry
Neuroimmune Chemistry
Analytical Chemistry
Optogenetics
Organic synthesis.
Metrics
H-Index
i10 Index
Citation
1
0
8
Rankings
Ranking Based On Selection: 1
Yujie Sun
Metrics
H-Index
i10 Index
Citation Counts
59
85
17,576
Inorganic Chemistry
Electrochemistry
Photochemistry
Rankings
Ranking Based On Selection: 2
Ryan J White
Metrics
H-Index
i10 Index
Citation Counts
43
76
6,279
Electrochemistry
Analytical Chemistry
Nanoscience
Rankings
Ranking Based On Selection: 3
Guanqun Han
Metrics
H-Index
i10 Index
Citation Counts
41
59
5,353
electro/photocatalysis
organic transformations
hydrogen production
biomass upgrading
Rankings
Ranking Based On Selection: 4
Bruce Ault
Metrics
H-Index
i10 Index
Citation Counts
41
171
6,290
Physical Chemistry
Spectroscopy
Molecular Structure
Matrix Isolation
Rankings
Ranking Based On Selection: 5
Peng Zhang
Metrics
H-Index
i10 Index
Citation Counts
36
70
6,917
Rankings
Ranking Based On Selection: 6
Hairong Guan
Metrics
H-Index
i10 Index
Citation Counts
33
53
5,948
catalysis
organometallic chemistry
reaction mechanisms
metal hydrides
Rankings
Ranking Based On Selection: 7
Julio A Landero Figueroa
Metrics
H-Index
i10 Index
Citation Counts
27
50
2,195
Rankings
Ranking Based On Selection: 8
Joo Youp Lee
Metrics
H-Index
i10 Index
Citation Counts
27
42
2,173
Catalysis and Reaction Engineering
Separations
Gene and Drug Delivery
Rankings
Ranking Based On Selection: 9
Albert Bobst
Metrics
H-Index
i10 Index
Citation Counts
27
62
1,976
Rankings
Ranking Based On Selection: 10
Laura Sagle
Metrics
H-Index
i10 Index
Citation Counts
25
30
3,358
nanoscience
LSPR and SERS
nano-biology
nanobiotechnology

Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast! 

Rankings
Ranking Based On Selection: 11
Devaiah Damma
Metrics
H-Index
i10 Index
Citation Counts
24
31
1,647
Heterogeneous Catalysis
Environmental
Hydrogen Generation
Syngas Conversion
CO2 Conversion
Rankings
Ranking Based On Selection: 12
George Stan
Metrics
H-Index
i10 Index
Citation Counts
23
38
2,580
Rankings
Ranking Based On Selection: 13
Wei Liu
Metrics
H-Index
i10 Index
Citation Counts
22
24
3,203
Rankings
Ranking Based On Selection: 14
Arnab Dawn
Metrics
H-Index
i10 Index
Citation Counts
22
31
1,662
Rankings
Ranking Based On Selection: 15
Gary Lim
Metrics
H-Index
i10 Index
Citation Counts
21
29
1,043
Rankings
Ranking Based On Selection: 16
Ashley E Ross
Metrics
H-Index
i10 Index
Citation Counts
20
27
1,300
Analytical chemistry
neuroscience
electrochemistry
microfluidics
immunology
Rankings
Ranking Based On Selection: 17
Aruna Wijeratne
Metrics
H-Index
i10 Index
Citation Counts
18
24
1,031
Mass Spectrometry
Chemical Proteomics
Bioanalytical Chemistry
Separation Sciences
Rankings
Ranking Based On Selection: 18
Robert L Ross
Metrics
H-Index
i10 Index
Citation Counts
17
18
2,567
Rankings
Ranking Based On Selection: 19
Milan KR Barman
Metrics
H-Index
i10 Index
Citation Counts
17
22
1,283
Rankings
Ranking Based On Selection: 20
In Kwon Kim
Metrics
H-Index
i10 Index
Citation Counts
17
20
1,127
Mechanism and Drug Discovery of ADP-ribosylation Cycle
Rankings
Ranking Based On Selection: 21
Ramana Reddy Mittapalli
Metrics
H-Index
i10 Index
Citation Counts
14
19
723
Organic Synthesis
Bio-Organic and Medicinal Chemistry
Drug Discovery
Process Development
Total Synthesis of Natural Products
Rankings
Ranking Based On Selection: 22
Chris Crutchfield
Metrics
H-Index
i10 Index
Citation Counts
13
14
1,513
Rankings
Ranking Based On Selection: 23
Xuefei Guo
Metrics
H-Index
i10 Index
Citation Counts
12
12
1,021
Method Development&Validation
Sensors
Bioanalytical Chemistry
ICP-MS
LC-MS
Rankings
Ranking Based On Selection: 24
Michael T Cryan
Metrics
H-Index
i10 Index
Citation Counts
8
6
193
Chemistry
Bioanalytical chemistry
Neurochemistry
Electrochemistry
Microfluidics
Rankings
Ranking Based On Selection: 25
Xian Cao
Metrics
H-Index
i10 Index
Citation Counts
7
7
417
Photon Upconversion
Analytical Chemistry
Photochemistry
Nanomaterials
Rankings
Ranking Based On Selection: 26
Ashwin Chaturvedi
Metrics
H-Index
i10 Index
Citation Counts
7
6
112
organic synthesis
electrocatalysis
materials chemistry
Rankings
Ranking Based On Selection: 27
Jie He
Metrics
H-Index
i10 Index
Citation Counts
7
7
948
Rankings
Ranking Based On Selection: 28
Bedraj Pandey
Metrics
H-Index
i10 Index
Citation Counts
6
5
214
Rankings
Ranking Based On Selection: 29
Colby E Witt
Metrics
H-Index
i10 Index
Citation Counts
6
5
196
Analytical Chemistry
Bioanalytical Chemistry
Neurochemistry
Rankings
Ranking Based On Selection: 30
Chao Wang
Metrics
H-Index
i10 Index
Citation Counts
6
4
137
Rankings
Ranking Based On Selection: 31
Xiaoyu Cui
Metrics
H-Index
i10 Index
Citation Counts
5
5
290
Rankings
Ranking Based On Selection: 32
Scott Abernathy
Metrics
H-Index
i10 Index
Citation Counts
5
5
120
Rankings
Ranking Based On Selection: 33
Natalie J Norman
Metrics
H-Index
i10 Index
Citation Counts
5
2
98
Rankings
Ranking Based On Selection: 34
Adam Azman
Metrics
H-Index
i10 Index
Citation Counts
5
2
74
Rankings
Ranking Based On Selection: 35
Cliff Larrabee
Metrics
H-Index
i10 Index
Citation Counts
5
5
353
nanotechnology
surfactants
micelles
clathrates
Rankings
Ranking Based On Selection: 36
Sarah Unser
Metrics
H-Index
i10 Index
Citation Counts
4
4
677
Rankings
Ranking Based On Selection: 37
Andrew E Eisenhart
Metrics
H-Index
i10 Index
Citation Counts
4
2
60
Computational Chemistry
High-Performance Computing
Machine Learning
Rankings
Ranking Based On Selection: 38
Jiawei Gong
Metrics
H-Index
i10 Index
Citation Counts
3
3
469
Rankings
Ranking Based On Selection: 39
Der Vang
Metrics
H-Index
i10 Index
Citation Counts
3
1
28
SERS
Nanoparticles
Nanostars
Synthesis
Chemistry
Rankings
Ranking Based On Selection: 40
Computational Chemistry Protein Biophysics Protein degradation
Rankings
Ranking Based On Selection: 41
Kosala Rs Thenna Hewa
Metrics
H-Index
i10 Index
Citation Counts
3
1
23
Synthetic organic chemistry
Physical Organic chemistry
Rankings
Ranking Based On Selection: 42
Onyinye Osisioma
Metrics
H-Index
i10 Index
Citation Counts
2
2
63
Rankings
Ranking Based On Selection: 43
Madolynn R Johnson
Metrics
H-Index
i10 Index
Citation Counts
2
1
18
Pharmacology
Toxicology
Biochemistry
Organic Chemistry
Polymer Chemistry
Rankings
Ranking Based On Selection: 44
Noorul Bashar
Metrics
H-Index
i10 Index
Citation Counts
2
1
17
Photocatalysis
PCET
Inorganic & organic chemistry
Nanomaterials
Rankings
Ranking Based On Selection: 45
Sobiya George
Metrics
H-Index
i10 Index
Citation Counts
2
0
8
Rankings
Ranking Based On Selection: 46
Leanna J Patton
Metrics
H-Index
i10 Index
Citation Counts
1
0
9
organic chemistry
photochemistry
crystallography
dynamic crystals
physical organic chemistry
Rankings
Ranking Based On Selection: 47
Sarbeshwar Ojha
Metrics
H-Index
i10 Index
Citation Counts
1
0
8
Fast Scan Cyclic Voltammetry
Neuroimmune Chemistry
Analytical Chemistry
Optogenetics
Organic synthesis.