Citation Rankings
Highly Cited Researchers
Highly Cited Researchers Citation Rankings (Sort by last 6 years Citation Index) 2025
The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 1
Biomass Conversion
Green Processes and Material Development
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,170
14,331
0.748
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 2
Environmental Science and Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,008
12,494
0.960
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 3
Renewable energy
biomass
biodiesel
bioethanol
microalgae
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,876
11,195
0.753
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 4
REE detection
H2S conversion
Ionic Liquids
MOF
Li-ion Battery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,399
7,282
0.700
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 5
Process Safety
CO2 Capture
Separation Processes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,669
7,146
0.739
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 6
Ionic liquids
biotechnology
environment
pharmaceutics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,422
6,938
0.736
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 7
Ionic liquids
Biopolymer and Polymer Composite ...
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,796
6,538
0.667
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 8
Chemical Engineering
Catalysis
Biomass
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,409
6,240
0.663
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 9
Civil Engineering
Project Management
Digital Twin
Automated Monitoring
and Sustainability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,240
6,149
0.985
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 10
Structural Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,211
6,104
0.846
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 11
concrete technology and materials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,415
6,003
0.810
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 12
Structural Dynamics
Stochastic Processes
Offshore Engineering
Energy Transition
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,270
5,590
0.892
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 13
Energy
Thermo-fluids
Mechanical Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,661
4,984
0.748
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 14
Artificial Intelligence
Control Automation & Robotics
Image and Signal Processing
Energy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,327
4,777
0.652
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 15
CO2 Gas Hydrate
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,627
4,762
0.846
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 16
GTL
CO2 reforming
biofuels
CFD
molecular simulations
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,230
4,754
0.909
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 17
Bio-Medical Engineering
EEG
FNIR
Signal Processing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,206
4,537
0.731
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 18
Wastewater Treatment
Environmental Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,730
4,432
0.773
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 19
Analytical chemistry
green separation methods
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,869
4,421
0.498
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 20
Chemical Engineering
Membrane
Absorption
Process Modeling and Scale-up
Computational Fluid
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,806
4,359
0.751
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 21
concrete technology
geopolymer concrete
cement replacement materials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,883
4,312
0.733
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 22
GIS & RS
Disaster Mgt. (Natural hazards)
Climate Change
Geo-AI
Smart Cities
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,516
4,312
0.955
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 23
Carbondioxide and Hydrogen Geo-Storage
Energy Security
Enhanced oil recovery
nanotechnology
unconventional resources
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,249
4,167
0.981
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 24
Chemical Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,598
4,118
0.542
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 25
Thermofluids
Energy Systems
Hybrid solar thermal
Two phase flows
CFD.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,236
4,086
0.780
* Last 6 Years Citation Counts Rankings
Rankings
21,170
64
1
Ranking Based On Selection: 1
Ir Suzana Yusup
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,170
14,331
0.748
* Last 6 Years Citation Counts Rankings
Rankings
26,106
89
2
Ranking Based On Selection: 2
Jun Wei Lim
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,008
12,494
0.960
Environmental Science and Engineering
* Last 6 Years Citation Counts Rankings
Rankings
30,792
105
3
Ranking Based On Selection: 3
Man Kee Lam
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,876
11,195
0.753
Renewable energy
biomass
biodiesel
bioethanol
microalgae
* Last 6 Years Citation Counts Rankings
Rankings
57,336
238
4
Ranking Based On Selection: 4
Mohamad Azmi Bustam
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,399
7,282
0.700
REE detection
H2S conversion
Ionic Liquids
MOF
Li-ion Battery
* Last 6 Years Citation Counts Rankings
Rankings
58,877
242
5
Ranking Based On Selection: 5
Azmi Mohd Shariff
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,669
7,146
0.739
Process Safety
CO2 Capture
Separation Processes
* Last 6 Years Citation Counts Rankings
Rankings
61,378
252
6
Ranking Based On Selection: 6
Muhammad Moniruzzaman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,422
6,938
0.736
Ionic liquids
biotechnology
environment
pharmaceutics
* Last 6 Years Citation Counts Rankings
Rankings
66,429
273
7
Ranking Based On Selection: 7
Zakaria Man
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,796
6,538
0.667
Ionic liquids
Biopolymer and Polymer Composite ...
* Last 6 Years Citation Counts Rankings
Rankings
70,767
298
8
Ranking Based On Selection: 8
Yoshimitsu Uemura
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,409
6,240
0.663
Chemical Engineering
Catalysis
Biomass
* Last 6 Years Citation Counts Rankings
Rankings
72,138
303
9
Ranking Based On Selection: 9
Wesam Alaloul
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,240
6,149
0.985
Civil Engineering
Project Management
Digital Twin
Automated Monitoring
and Sustainability
* Last 6 Years Citation Counts Rankings
Rankings
72,801
307
10
Ranking Based On Selection: 10
Bashar S. Mohammed
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,211
6,104
0.846
* Last 6 Years Citation Counts Rankings
Rankings
74,479
320
11
Ranking Based On Selection: 11
Nasir Shafiq
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,415
6,003
0.810
concrete technology and materials
* Last 6 Years Citation Counts Rankings
Rankings
81,715
357
12
Ranking Based On Selection: 12
MS Liew
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,270
5,590
0.892
Structural Dynamics
Stochastic Processes
Offshore Engineering
Energy Transition
* Last 6 Years Citation Counts Rankings
Rankings
94,518
441
13
Ranking Based On Selection: 13
Shaharin A Sulaiman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,661
4,984
0.748
Energy
Thermo-fluids
Mechanical Engineering
* Last 6 Years Citation Counts Rankings
Rankings
99,645
476
14
Ranking Based On Selection: 14
Irraivan Elamvazuthi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,327
4,777
0.652
Artificial Intelligence
Control Automation & Robotics
Image and Signal Processing
Energy
* Last 6 Years Citation Counts Rankings
Rankings
100,022
478
15
Ranking Based On Selection: 15
Bhajan Lal Rahanu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,627
4,762
0.846
* Last 6 Years Citation Counts Rankings
Rankings
100,250
480
16
Ranking Based On Selection: 16
Bawadi Abdullah
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,230
4,754
0.909
* Last 6 Years Citation Counts Rankings
Rankings
106,348
526
17
Ranking Based On Selection: 17
Naufal M Saad
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,206
4,537
0.731
Bio-Medical Engineering
EEG
FNIR
Signal Processing
* Last 6 Years Citation Counts Rankings
Rankings
109,388
534
18
Ranking Based On Selection: 18
Shamsul Rahman Mohamed Kutty
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,730
4,432
0.773
Wastewater Treatment
Environmental Engineering
* Last 6 Years Citation Counts Rankings
Rankings
109,723
538
19
Ranking Based On Selection: 19
Bahruddin Saad
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,869
4,421
0.498
Analytical chemistry
green separation methods
* Last 6 Years Citation Counts Rankings
Rankings
111,620
550
20
Ranking Based On Selection: 20
Lau Kok Keong
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,806
4,359
0.751
Chemical Engineering
Membrane
Absorption
Process Modeling and Scale-up
Computational Fluid
* Last 6 Years Citation Counts Rankings
Rankings
113,122
563
21
Ranking Based On Selection: 21
Mf Nuruddin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,883
4,312
0.733
concrete technology
geopolymer concrete
cement replacement materials
* Last 6 Years Citation Counts Rankings
Rankings
113,130
564
22
Ranking Based On Selection: 22
Abdul Lateef Balogun
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,516
4,312
0.955
GIS & RS
Disaster Mgt. (Natural hazards)
Climate Change
Geo-AI
Smart Cities
* Last 6 Years Citation Counts Rankings
Rankings
117,851
600
23
Ranking Based On Selection: 23
Nurudeen Peter Yekeen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,249
4,167
0.981
Carbondioxide and Hydrogen Geo-Storage
Energy Security
Enhanced oil recovery
nanotechnology
unconventional resources
* Last 6 Years Citation Counts Rankings
Rankings
119,498
615
24
Ranking Based On Selection: 24
Murugesan Thanabalan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,598
4,118
0.542
* Last 6 Years Citation Counts Rankings
Rankings
120,586
622
25
Ranking Based On Selection: 25
Hussain H Al Kayiem
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,236
4,086
0.780
Thermofluids
Energy Systems
Hybrid solar thermal
Two phase flows
CFD.