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 rankings in world, region, country, and university are in Beta version and are subject to real-time updates, since the subject field “Others” (1,121,291 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded. These rankings will dynamically evolve in real time as the “Others” profiles are revised and classified. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.

* Rankings
Ranking Based On Selection: 1
Rangabhashiyam Selvasembian
Bioremediation
Biosorption
Wastewater Treatment
Waste Valorizatio
Metrics
 
H-Index
i10 Index
Citation
52
130
8,907
* Rankings
Ranking Based On Selection: 2
Lakhveer Singh
Chemistry
Engineering technology
Bioelectrochemical systems
Energy and Water treatment
Nano material
Metrics
 
H-Index
i10 Index
Citation
51
108
7,879
* Rankings
Ranking Based On Selection: 3
Ranjit Thapa
DFT/ML
Electrocatalyst
Descriptor Theory
Storage
CO Oxidatio
Metrics
 
H-Index
i10 Index
Citation
44
137
6,616
* Rankings
Ranking Based On Selection: 4
Karthik Rajendran
Techno economic analysis
Anaerobic Digestion
Electrofuels
Power to gas
Energy&A
Metrics
 
H-Index
i10 Index
Citation
42
72
6,295
* Rankings
Ranking Based On Selection: 5
Goutam Kumar Dalapati
Green Hydrogen
Photovoltaic
Net Zero
Machine Learning
Energy storag
Metrics
 
H-Index
i10 Index
Citation
38
95
5,006
* Rankings
Ranking Based On Selection: 6
Kshira Sagar Sahoo
IoT
SDN
edge computing
Machine Learning
DDoS Anomaly Detectio
Metrics
 
H-Index
i10 Index
Citation
34
75
3,224
* Rankings
Ranking Based On Selection: 8
Durga Rao C
Virology
Molecular Biology
Cell Biology
Biotechnology
health Science
Metrics
 
H-Index
i10 Index
Citation
28
45
2,719
* Rankings
Ranking Based On Selection: 9
Nimai Mishra
Semiconductor Nanocrystals
Perovskite Nanocrystals
Optoelectronic Applicatio
Metrics
 
H-Index
i10 Index
Citation
26
38
1,692
* Rankings
Ranking Based On Selection: 10
Mallikarjuna Rao Motapothula
In situ Ion Beam analysis of chemical and biological interface
Metrics
 
H-Index
i10 Index
Citation
26
46
2,627
* Rankings
Ranking Based On Selection: 11
Sabyasachi Chakrabortty
Colloidal Nanocrystals
Catalysis
Theranostics
Carbon Materials
Renewable Energ
Metrics
 
H-Index
i10 Index
Citation
24
38
2,292
* Rankings
Ranking Based On Selection: 12
Rajapandiyan Panneerselvam
Surface-Enhanced Raman Spectroscopy
Microfluidic Devices
Spectroelectrochemistry
Analytical Chemistr
Metrics
 
H-Index
i10 Index
Citation
23
29
4,723
* Rankings
Ranking Based On Selection: 14
Sujith Kalluri
Renewable Energy
Rechargeable Batteries
Battery Diagnostics & Management
Electronic Material
Metrics
 
H-Index
i10 Index
Citation
19
24
1,971
* Rankings
Ranking Based On Selection: 15
Salla Gangi Reddy
Partially coherent beams with optical vortices
Entanglement and polarizatio
Metrics
 
H-Index
i10 Index
Citation
18
23
821
* Rankings
Ranking Based On Selection: 16
Soumyajyoti Biswas
statistical mechanics
fracture
earthquakes
econophysics
sociophysic
Metrics
 
H-Index
i10 Index
Citation
17
27
1,136
* Rankings
Ranking Based On Selection: 17
Pardha Saradhi Maram
Solid state chemistry
Thermodynamics
photoluminescence of solids
surface and interface energetic
Metrics
 
H-Index
i10 Index
Citation
17
25
1,277
* Rankings
Ranking Based On Selection: 19
Syed Akhil
Colliodal Semiconductors nanocrystals
Perovskite nanocrystals
Graphene nanocomposite
Metrics
 
H-Index
i10 Index
Citation
16
21
723
* Rankings
Ranking Based On Selection: 20
Tarkeshwar Mahto
hybrid power system
Electic Vehicles
Machine Lerning
Deep Lernin
Metrics
 
H-Index
i10 Index
Citation
16
18
885
* Rankings
Ranking Based On Selection: 21
Ramesh Vaddi
Hardware security
In-memory Computing for AI
IoT
Energy Efficient Circuits
Post CMOS device
Metrics
 
H-Index
i10 Index
Citation
16
25
960
* Rankings
Ranking Based On Selection: 23
Siddhartha Ghosh
Pulsed Laser Deposition
Oxide Thin film
Surfaces and Interfaces
Inter-facial Magnetism
solid-liquid interfac
Metrics
 
H-Index
i10 Index
Citation
14
20
1,242
* Rankings
Ranking Based On Selection: 24
Vg Vasavi Dutt
Semiconductor Nanocrystals
Metal Halide Perovskite Nanocrystal
Metrics
 
H-Index
i10 Index
Citation
14
18
664
Rankings
Ranking Based On Selection: 1
Rangabhashiyam Selvasembian
Metrics
 
H-Index
i10 Index
Citation Counts
52
130
8,907
Bioremediation
Biosorption
Wastewater Treatment
Waste Valorizatio
Rankings
Ranking Based On Selection: 2
Lakhveer Singh
Metrics
 
H-Index
i10 Index
Citation Counts
51
108
7,879
Chemistry
Engineering technology
Bioelectrochemical systems
Energy and Water treatment
Nano material
Rankings
Ranking Based On Selection: 3
Ranjit Thapa
Metrics
 
H-Index
i10 Index
Citation Counts
44
137
6,616
DFT/ML
Electrocatalyst
Descriptor Theory
Storage
CO Oxidatio
Rankings
Ranking Based On Selection: 4
Karthik Rajendran
Metrics
 
H-Index
i10 Index
Citation Counts
42
72
6,295
Techno economic analysis
Anaerobic Digestion
Electrofuels
Power to gas
Energy&A
Rankings
Ranking Based On Selection: 5
Goutam Kumar Dalapati
Metrics
 
H-Index
i10 Index
Citation Counts
38
95
5,006
Green Hydrogen
Photovoltaic
Net Zero
Machine Learning
Energy storag
Rankings
Ranking Based On Selection: 6
Kshira Sagar Sahoo
Metrics
 
H-Index
i10 Index
Citation Counts
34
75
3,224
IoT
SDN
edge computing
Machine Learning
DDoS Anomaly Detectio
Rankings
Ranking Based On Selection: 7
Mahesh Kumar Ravva
Metrics
 
H-Index
i10 Index
Citation Counts
28
54
2,976
Rankings
Ranking Based On Selection: 8
Durga Rao C
Metrics
 
H-Index
i10 Index
Citation Counts
28
45
2,719
Virology
Molecular Biology
Cell Biology
Biotechnology
health Science
Rankings
Ranking Based On Selection: 9
Nimai Mishra
Metrics
 
H-Index
i10 Index
Citation Counts
26
38
1,692
Semiconductor Nanocrystals
Perovskite Nanocrystals
Optoelectronic Applicatio
Rankings
Ranking Based On Selection: 10
Mallikarjuna Rao Motapothula
Metrics
 
H-Index
i10 Index
Citation Counts
26
46
2,627
In situ Ion Beam analysis of chemical and biological interface
Rankings
Ranking Based On Selection: 11
Sabyasachi Chakrabortty
Metrics
 
H-Index
i10 Index
Citation Counts
24
38
2,292
Colloidal Nanocrystals
Catalysis
Theranostics
Carbon Materials
Renewable Energ
Rankings
Ranking Based On Selection: 12
Rajapandiyan Panneerselvam
Metrics
 
H-Index
i10 Index
Citation Counts
23
29
4,723
Surface-Enhanced Raman Spectroscopy
Microfluidic Devices
Spectroelectrochemistry
Analytical Chemistr
Rankings
Ranking Based On Selection: 13
Anil K Suresh
Metrics
 
H-Index
i10 Index
Citation Counts
21
30
4,171
Rankings
Ranking Based On Selection: 14
Sujith Kalluri
Metrics
 
H-Index
i10 Index
Citation Counts
19
24
1,971
Renewable Energy
Rechargeable Batteries
Battery Diagnostics & Management
Electronic Material
Rankings
Ranking Based On Selection: 15
Salla Gangi Reddy
Metrics
 
H-Index
i10 Index
Citation Counts
18
23
821
Partially coherent beams with optical vortices
Entanglement and polarizatio
Rankings
Ranking Based On Selection: 16
Soumyajyoti Biswas
Metrics
 
H-Index
i10 Index
Citation Counts
17
27
1,136
statistical mechanics
fracture
earthquakes
econophysics
sociophysic
Rankings
Ranking Based On Selection: 17
Pardha Saradhi Maram
Metrics
 
H-Index
i10 Index
Citation Counts
17
25
1,277
Solid state chemistry
Thermodynamics
photoluminescence of solids
surface and interface energetic
Rankings
Ranking Based On Selection: 18
Jatis Kumar Dash
Metrics
 
H-Index
i10 Index
Citation Counts
17
24
1,005
Rankings
Ranking Based On Selection: 19
Syed Akhil
Metrics
 
H-Index
i10 Index
Citation Counts
16
21
723
Colliodal Semiconductors nanocrystals
Perovskite nanocrystals
Graphene nanocomposite
Rankings
Ranking Based On Selection: 20
Tarkeshwar Mahto
Metrics
 
H-Index
i10 Index
Citation Counts
16
18
885
hybrid power system
Electic Vehicles
Machine Lerning
Deep Lernin
Rankings
Ranking Based On Selection: 21
Ramesh Vaddi
Metrics
 
H-Index
i10 Index
Citation Counts
16
25
960
Hardware security
In-memory Computing for AI
IoT
Energy Efficient Circuits
Post CMOS device
Rankings
Ranking Based On Selection: 22
Writoban Basu Ball
Metrics
 
H-Index
i10 Index
Citation Counts
15
16
1,060
Rankings
Ranking Based On Selection: 23
Siddhartha Ghosh
Metrics
 
H-Index
i10 Index
Citation Counts
14
20
1,242
Pulsed Laser Deposition
Oxide Thin film
Surfaces and Interfaces
Inter-facial Magnetism
solid-liquid interfac
Rankings
Ranking Based On Selection: 24
Vg Vasavi Dutt
Metrics
 
H-Index
i10 Index
Citation Counts
14
18
664
Semiconductor Nanocrystals
Metal Halide Perovskite Nanocrystal
Rankings
Ranking Based On Selection: 25
Abinash Pujahari
Metrics
 
H-Index
i10 Index
Citation Counts
14
15
660