Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 2.203 Scientists Citation Rankings - 2025
The Citation Rankings (Highly Cited Researchers) list 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.
* Total Citation Counts Rankings
Ranking Based On Selection: 1
membrane technology
nanostructured materials
hemodialysis
reverse osmosis
fuel cell
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
87,081
54,284
0.623
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Membrane Technology
Ceramic Membrane
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,952
18,854
0.787
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Water resources
Climate Change
Statistical hydrology
Groundwater hydrology
Hydrological
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,690
19,161
0.809
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Fuel Cells
Membrane Technologies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,889
19,110
0.873
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Cellulose
Nanocellulose
Starch Polymer
Nanocomposite
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,840
19,908
0.955
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Applied catalysis
reaction engineering
biomass conversion
CO2 utilization
hydrogen production
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,295
11,578
0.570
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Membrane
Thin Film Nanocomposite
Reverse Osmosis
Nanofiltration
Water/Wastewater Purification
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,184
14,139
0.701
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Renewable Solar Fuels
Photo-catalysis and Water Splitting
CO2 conversion and Hydrogen Production
Wastewater Treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,122
16,324
0.854
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Process Modeling
Process Safety
Process Control & Optimization
Process Intensification
Hydrogen & Fuel Cell
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,801
9,983
0.531
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Polymer Chemistry
Nanotechnology
Nanohybride Materials
Targeted Drug Delivery
Nanomedicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,501
9,825
0.634
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Polymer Nanocomposites
Graphene
Polymer Blends
Flame Retardancy
Biocomposites
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,410
8,866
0.575
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Operations Management
Industrial Engineering
Operations Research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,389
7,024
0.456
* Total Citation Counts Rankings
Ranking Based On Selection: 13
nanomaterials
membrane technology
wastewater treatment
gas separation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,582
11,236
0.771
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,170
9,029
0.637
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Biomechanics and Biomaterials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,576
7,647
0.563
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,526
6,478
0.479
* Total Citation Counts Rankings
Ranking Based On Selection: 17
geotechnical engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,194
7,700
0.584
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Air Resources Science and Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,501
8,310
0.665
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Fuels
Carbonaceous Solid Waste Thermal Conversion
Sustainable and Renewable Energy and Materials Research.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,399
6,576
0.530
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Microbiology
Industrial Biotechnology
Fermentation
mammalian cells
mushroom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,128
8,359
0.751
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Powder Technology
Thermal Pollution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,027
8,109
0.735
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Artificial Intelligence
Software Engineering
Machine Learning
Information Security
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,966
6,975
0.636
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Photovoltaic Systems
Power Electronic
Renewable Energy
Energy Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,844
7,176
0.662
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Quality Management
Operation Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,714
6,905
0.644
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Information Systems
IS Theory
Knowledge Management
E-Gov
E-Business
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,439
7,305
0.700
* Total Citation Counts Rankings
Rankings
4,135
4
1
Ranking Based On Selection: 1
Ahmad Fauzi Ismail
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
87,081
54,284
0.623
membrane technology
nanostructured materials
hemodialysis
reverse osmosis
fuel cell
* Total Citation Counts Rankings
Rankings
32,200
45
2
Ranking Based On Selection: 2
Mukhlis A Rahman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,952
18,854
0.787
* Total Citation Counts Rankings
Rankings
32,706
47
3
Ranking Based On Selection: 3
Shamsuddin Shahid
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,690
19,161
0.809
Water resources
Climate Change
Statistical hydrology
Groundwater hydrology
Hydrological
* Total Citation Counts Rankings
Rankings
36,571
57
4
Ranking Based On Selection: 4
Mohd Hafiz Dzarfan Othman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,889
19,110
0.873
* Total Citation Counts Rankings
Rankings
39,230
66
5
Ranking Based On Selection: 5
RA Ilyas|Ahmad Ilyas Rushdan, Rushdan Ahmad Ilyas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,840
19,908
0.955
* Total Citation Counts Rankings
Rankings
40,665
73
6
Ranking Based On Selection: 6
Nor Aishah Saidina Amin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,295
11,578
0.570
Applied catalysis
reaction engineering
biomass conversion
CO2 utilization
hydrogen production
* Total Citation Counts Rankings
Rankings
40,970
74
7
Ranking Based On Selection: 7
Wj Lau Woei Jye Lau
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,184
14,139
0.701
Membrane
Thin Film Nanocomposite
Reverse Osmosis
Nanofiltration
Water/Wastewater Purification
* Total Citation Counts Rankings
Rankings
44,095
84
8
Ranking Based On Selection: 8
Muhammad Tahir
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,122
16,324
0.854
Renewable Solar Fuels
Photo-catalysis and Water Splitting
CO2 conversion and Hydrogen Production
Wastewater Treatment
* Total Citation Counts Rankings
Rankings
45,122
86
9
Ranking Based On Selection: 9
Arshad Ahmad
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,801
9,983
0.531
Process Modeling
Process Safety
Process Control & Optimization
Process Intensification
Hydrogen & Fuel Cell
* Total Citation Counts Rankings
Rankings
58,519
127
10
Ranking Based On Selection: 10
Kamyar Shameli
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,501
9,825
0.634
Polymer Chemistry
Nanotechnology
Nanohybride Materials
Targeted Drug Delivery
Nanomedicine
* Total Citation Counts Rankings
Rankings
58,992
129
11
Ranking Based On Selection: 11
Azman Hassan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,410
8,866
0.575
Polymer Nanocomposites
Graphene
Polymer Blends
Flame Retardancy
Biocomposites
* Total Citation Counts Rankings
Rankings
59,097
130
12
Ranking Based On Selection: 12
Kuan Yew Wong
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,389
7,024
0.456
Operations Management
Industrial Engineering
Operations Research
* Total Citation Counts Rankings
Rankings
63,371
142
13
Ranking Based On Selection: 13
Pei Sean Goh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,582
11,236
0.771
nanomaterials
membrane technology
wastewater treatment
gas separation
* Total Citation Counts Rankings
Rankings
65,893
150
14
Ranking Based On Selection: 14
Haslenda Hashim
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,170
9,029
0.637
* Total Citation Counts Rankings
Rankings
69,607
164
15
Ranking Based On Selection: 15
Mohammed Rafiq Abdul Kadir
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,576
7,647
0.563
Biomechanics and Biomaterials
* Total Citation Counts Rankings
Rankings
69,931
168
16
Ranking Based On Selection: 16
Aida Ali
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,526
6,478
0.479
* Total Citation Counts Rankings
Rankings
72,153
175
17
Ranking Based On Selection: 17
Nor Zurairahetty Mohd Yunus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,194
7,700
0.584
* Total Citation Counts Rankings
Rankings
77,120
194
18
Ranking Based On Selection: 18
Mohd Rashid Mohd Yusof
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,501
8,310
0.665
* Total Citation Counts Rankings
Rankings
77,865
197
19
Ranking Based On Selection: 19
Ir Farid Nasir Ani
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,399
6,576
0.530
Fuels
Carbonaceous Solid Waste Thermal Conversion
Sustainable and Renewable Energy and Materials Research.
* Total Citation Counts Rankings
Rankings
88,805
226
20
Ranking Based On Selection: 20
Hesham A El Enshasy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,128
8,359
0.751
Microbiology
Industrial Biotechnology
Fermentation
mammalian cells
mushroom
* Total Citation Counts Rankings
Rankings
89,784
236
21
Ranking Based On Selection: 21
Ezzat Chan Abdullah
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,027
8,109
0.735
Powder Technology
Thermal Pollution
* Total Citation Counts Rankings
Rankings
90,394
240
22
Ranking Based On Selection: 22
Ali Selamat
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,966
6,975
0.636
Artificial Intelligence
Software Engineering
Machine Learning
Information Security
* Total Citation Counts Rankings
Rankings
91,538
243
23
Ranking Based On Selection: 23
Chee Wei Tan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,844
7,176
0.662
Photovoltaic Systems
Power Electronic
Renewable Energy
Energy Management
* Total Citation Counts Rankings
Rankings
92,895
248
24
Ranking Based On Selection: 24
Ahmad Jusoh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,714
6,905
0.644
* Total Citation Counts Rankings
Rankings
95,679
262
25
Ranking Based On Selection: 25
Othman Ibrahim
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,439
7,305
0.700
Information Systems
IS Theory
Knowledge Management
E-Gov
E-Business