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" (901,365 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.

Sanjay K Ram
Plasmonic Sensors
Oxides
Silicon Photovoltaics
Nanophotonics
Carbon Thin Films
Metrics
H-Index
i10 Index
Citation
16
21
590
M Sivakumar
Laser Materials Processing
Synthesis and Characterization of Nanostructures
Metrics
H-Index
i10 Index
Citation
15
25
628
CO Sreekala
Organic thin film sensors
Thin film solar cells
Dye sensitized solar cells
Quantum dot sensitized solar cells
e
Metrics
H-Index
i10 Index
Citation
11
15
603
Venkatachalaiah KN
Nanophosphors and its Applications
Metrics
H-Index
i10 Index
Citation
11
12
498
Saravana Veni
Soliton' theory
Nonlinear Dynamics
Optical Solitons
Ultracold atoms
Quantum Chaos
Metrics
H-Index
i10 Index
Citation
10
11
253
Lakshmi S Bose
Astronomy & Astrophysics
Education & Computing
Nano Materials
Metrics
H-Index
i10 Index
Citation
8
7
682
Harish V
Radiation Shielding
Polymer Composites
Radiation Effects
Metrics
H-Index
i10 Index
Citation
8
7
532
Sks Nair
Applied Optics
Laser
Spectroscopy
Metrics
H-Index
i10 Index
Citation
7
7
115
R. Shabu
Thinfilm
Nano Materials
Crystal growth and Characterization
Metrics
H-Index
i10 Index
Citation
6
4
177
Delmar Marshall
Nonlinear Dynamics
Chemical Physics
Metrics
H-Index
i10 Index
Citation
5
4
77
Rankings
Ranking Based On Selection: 1
Sanjay K Ram
Metrics
H-Index
i10 Index
Citation Counts
16
21
590
Plasmonic Sensors
Oxides
Silicon Photovoltaics
Nanophotonics
Carbon Thin Films
Rankings
Ranking Based On Selection: 2
M Sivakumar
Metrics
H-Index
i10 Index
Citation Counts
15
25
628
Laser Materials Processing
Synthesis and Characterization of Nanostructures
Rankings
Ranking Based On Selection: 3
CO Sreekala
Metrics
H-Index
i10 Index
Citation Counts
11
15
603
Organic thin film sensors
Thin film solar cells
Dye sensitized solar cells
Quantum dot sensitized solar cells
e
Rankings
Ranking Based On Selection: 4
Venkatachalaiah KN
Metrics
H-Index
i10 Index
Citation Counts
11
12
498
Rankings
Ranking Based On Selection: 5
Saravana Veni
Metrics
H-Index
i10 Index
Citation Counts
10
11
253
Soliton' theory
Nonlinear Dynamics
Optical Solitons
Ultracold atoms
Quantum Chaos
Rankings
Ranking Based On Selection: 6
Lakshmi S Bose
Metrics
H-Index
i10 Index
Citation Counts
8
7
682
Astronomy & Astrophysics
Education & Computing
Nano Materials
Rankings
Ranking Based On Selection: 7
Harish V
Metrics
H-Index
i10 Index
Citation Counts
8
7
532
Radiation Shielding
Polymer Composites
Radiation Effects
Rankings
Ranking Based On Selection: 8
Sks Nair
Metrics
H-Index
i10 Index
Citation Counts
7
7
115
Rankings
Ranking Based On Selection: 9
R. Shabu
Metrics
H-Index
i10 Index
Citation Counts
6
4
177
Thinfilm
Nano Materials
Crystal growth and Characterization
Rankings
Ranking Based On Selection: 10
P Prema|Prema P
Metrics
H-Index
i10 Index
Citation Counts
6
5
121
Rankings
Ranking Based On Selection: 11
Babulakshmanan Ramachandran
Metrics
H-Index
i10 Index
Citation Counts
6
4
155
Astrophysics
Physics Education
Pedagogy
Rankings
Ranking Based On Selection: 12
Delmar Marshall
Metrics
H-Index
i10 Index
Citation Counts
5
4
77
Rankings
Ranking Based On Selection: 13
Dharani Marappan
Metrics
H-Index
i10 Index
Citation Counts
4
1
41
Rankings
Ranking Based On Selection: 14
Raj Preethi P
Metrics
H-Index
i10 Index
Citation Counts
2
0
4
Rankings
Ranking Based On Selection: 15
Pe Sravan Krishnan
Metrics
H-Index
i10 Index
Citation Counts
1
0
9