Citation Rankings
Highly Cited Researchers
Centre for Research and Technology Hellas Highly Cited Researchers Citation Rankings (Sort by last 6 years Citation Index) 2025
Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: 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
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,357
6,496
0.526
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :2
Bioinformatics
Machine Learning
Open Science
Training
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,905
5,650
0.957
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :3
Process design
membrane technology
water treatment
multi-phase systems
renewable energies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,316
4,699
0.353
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :4
Diesel engines
Power plants
Smart grids
Energy systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,691
4,378
0.410
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :5
Polymerization Engineering
Functional Materials
Mathematical Modelling
Biochemical
Biomedical Enginnering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,520
3,558
0.284
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :6
Computational Fluid Dynamics
Combustion of alternative fuels
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,573
3,558
0.638
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :7
biorefineries
catalytic process engineering
wastes upgrading processes
green chemicals and processes
biomass catalytic pyrol
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,958
3,232
0.652
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :8
Combustion Technologies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,478
3,115
0.481
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :9
genetic diversity
molecular breeding
omics
genomics
molecular markers
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,245
2,816
0.663
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :10
Bioenergy
catalysis
chemical engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,918
2,651
0.539
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :11
Biomass pyrolysis
catalytic pyrolysis of biomass
biofuels
bio-oil
catalytic cracking
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,022
2,546
0.633
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :12
Pilot Plants design and implementation
Energy Management
Energy Storage
Hydrogen Production and Utilization
Model Predictive
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,954
2,214
0.447
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :13
Sustainable Energy Systems
CO2 Capture and Utilization
Process Design
Molecular Design
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,713
2,118
0.570
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :14
Artificial Intelligence
Human Factors
Human-Robot Interaction
Agrotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,954
1,911
0.978
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :15
Chemical/Petroleum Engineering
Porous Media
Transport Phenomena
Thermodynamics
Hydrate Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,693
1,757
0.476
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :16
biomass
gasification
biorefinery
biofuels
coal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,514
1,745
0.497
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :17
Agricultural Robotics
Agricultural Engineering
Artificial Intelligence
Smart Farming
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,081
1,641
0.789
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :18
Process Engineering
Process modeling
CCS/CCU
biorefineries
advanced energy systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,255
1,609
0.714
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :19
Chemical Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,575
1,603
0.212
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :20
Precision Agriculture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,531
1,345
0.879
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :21
transportation
transport modeling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,969
1,312
0.666
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :22
Transport
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,820
1,289
0.337
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :23
Nanotechnology
drug delivery systems
vaccines
hydrogels
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,090
1,268
0.607
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :24
Chemical Engineering
Advanced water and wastewater treatment
Membrane processes
Advanced Oxidation Technologies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,875
1,132
0.604
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :25
Transport
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,664
1,117
0.671
* Last 6 Years Citation Counts Rankings
Rankings
62,806
302
1
Ranking Based On Selection: 1
Aggelos Lappas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,357
6,496
0.526
* Last 6 Years Citation Counts Rankings
Rankings
75,592
376
2
Ranking Based On Selection: 2
Fotis Psomopoulos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,905
5,650
0.957
Bioinformatics
Machine Learning
Open Science
Training
* Last 6 Years Citation Counts Rankings
Rankings
95,553
512
3
Ranking Based On Selection: 3
Anastasios J. Karabelas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,316
4,699
0.353
Process design
membrane technology
water treatment
multi-phase systems
renewable energies
* Last 6 Years Citation Counts Rankings
Rankings
104,438
579
4
Ranking Based On Selection: 4
Dimitrios C. Rakopoulos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,691
4,378
0.410
* Last 6 Years Citation Counts Rankings
Rankings
133,954
779
5
Ranking Based On Selection: 5
Costas Kiparissides
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,520
3,558
0.284
Polymerization Engineering
Functional Materials
Mathematical Modelling
Biochemical
Biomedical Enginnering
* Last 6 Years Citation Counts Rankings
Rankings
133,974
780
6
Ranking Based On Selection: 6
Nikolopoulos Nikos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,573
3,558
0.638
Computational Fluid Dynamics
Combustion of alternative fuels
* Last 6 Years Citation Counts Rankings
Rankings
149,840
910
7
Ranking Based On Selection: 7
Konstantinos Kalogiannis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,958
3,232
0.652
biorefineries
catalytic process engineering
wastes upgrading processes
green chemicals and processes
biomass catalytic pyrol
* Last 6 Years Citation Counts Rankings
Rankings
156,241
958
8
Ranking Based On Selection: 8
Panagiotis Grammelis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,478
3,115
0.481
Combustion Technologies
* Last 6 Years Citation Counts Rankings
Rankings
175,023
1,091
9
Ranking Based On Selection: 9
Ioannis Ganopoulos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,245
2,816
0.663
genetic diversity
molecular breeding
omics
genomics
molecular markers
* Last 6 Years Citation Counts Rankings
Rankings
187,070
1,174
10
Ranking Based On Selection: 10
Eleni Heracleous
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,918
2,651
0.539
Bioenergy
catalysis
chemical engineering
* Last 6 Years Citation Counts Rankings
Rankings
195,297
1,245
11
Ranking Based On Selection: 11
Stylianos D. Stefanidis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,022
2,546
0.633
Biomass pyrolysis
catalytic pyrolysis of biomass
biofuels
bio-oil
catalytic cracking
* Last 6 Years Citation Counts Rankings
Rankings
226,188
1,470
12
Ranking Based On Selection: 12
Spyros S. Voutetakis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,954
2,214
0.447
Pilot Plants design and implementation
Energy Management
Energy Storage
Hydrogen Production and Utilization
Model Predictive
* Last 6 Years Citation Counts Rankings
Rankings
236,692
1,561
13
Ranking Based On Selection: 13
Athanasios I. Papadopoulos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,713
2,118
0.570
Sustainable Energy Systems
CO2 Capture and Utilization
Process Design
Molecular Design
* Last 6 Years Citation Counts Rankings
Rankings
262,481
1,782
14
Ranking Based On Selection: 14
Lefteris Benos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,954
1,911
0.978
Artificial Intelligence
Human Factors
Human-Robot Interaction
Agrotechnology
* Last 6 Years Citation Counts Rankings
Rankings
284,632
1,952
15
Ranking Based On Selection: 15
Ioannis N. Tsimpanogiannis|Ioannis N. Tsibanogiannis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,693
1,757
0.476
Chemical/Petroleum Engineering
Porous Media
Transport Phenomena
Thermodynamics
Hydrate Science
* Last 6 Years Citation Counts Rankings
Rankings
286,413
1,966
16
Ranking Based On Selection: 16
Kyriakos Panopoulos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,514
1,745
0.497
biomass
gasification
biorefinery
biofuels
coal
* Last 6 Years Citation Counts Rankings
Rankings
303,514
2,101
17
Ranking Based On Selection: 17
Dimitrios Kateris
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,081
1,641
0.789
Agricultural Robotics
Agricultural Engineering
Artificial Intelligence
Smart Farming
* Last 6 Years Citation Counts Rankings
Rankings
308,999
2,143
18
Ranking Based On Selection: 18
Konstantinos Atsonios
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,255
1,609
0.714
Process Engineering
Process modeling
CCS/CCU
biorefineries
advanced energy systems
* Last 6 Years Citation Counts Rankings
Rankings
309,956
2,155
19
Ranking Based On Selection: 19
Iacovos A. Vasalos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,575
1,603
0.212
* Last 6 Years Citation Counts Rankings
Rankings
362,635
2,586
20
Ranking Based On Selection: 20
Aristotelis C Tagarakis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,531
1,345
0.879
* Last 6 Years Citation Counts Rankings
Rankings
370,406
2,646
21
Ranking Based On Selection: 21
Josep Maria Salanova Grau
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,969
1,312
0.666
transportation
transport modeling
* Last 6 Years Citation Counts Rankings
Rankings
375,890
2,696
22
Ranking Based On Selection: 22
Evangelos Bekiaris
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,820
1,289
0.337
* Last 6 Years Citation Counts Rankings
Rankings
381,323
2,739
23
Ranking Based On Selection: 23
Olga Kammona
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,090
1,268
0.607
Nanotechnology
drug delivery systems
vaccines
hydrogels
* Last 6 Years Citation Counts Rankings
Rankings
418,282
3,054
24
Ranking Based On Selection: 24
Konstantinos Plakas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,875
1,132
0.604
Chemical Engineering
Advanced water and wastewater treatment
Membrane processes
Advanced Oxidation Technologies
* Last 6 Years Citation Counts Rankings
Rankings
422,729
3,093
25
Ranking Based On Selection: 25
Georgia Aifandopoulou
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,664
1,117
0.671