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.
* Total Citation Counts Rankings
Ranking Based On Selection :76
Fiber optic sensors
Nonlinear fiber optics
Optoelectronics
Photonics
Optical communications
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,136
1,097
0.966
* Total Citation Counts Rankings
Ranking Based On Selection :77
Nanotechnology
Photoluminescence
Ligand Chemistry
Metal-Organic Framework thin film growth
Rare Earths
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,031
856
0.830
* Total Citation Counts Rankings
Ranking Based On Selection :78
Transport phenomena
microstructural analysis
oxygen transport
fuel cells
electrochemical energy conversion
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,007
634
0.630
* Total Citation Counts Rankings
Ranking Based On Selection :79
process modeling
optimization
systems engineering
cost estimation
energy systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
984
731
0.743
* Total Citation Counts Rankings
Ranking Based On Selection :80
alloy development
high temperature oxidation
materials characterization
nanomaterials
thin films
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
981
720
0.734
* Total Citation Counts Rankings
Ranking Based On Selection :81
Metallurgy
Superalloys
Creep
Melting
ESR
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
978
824
0.843
* Total Citation Counts Rankings
Ranking Based On Selection :82
Energy Conversion
Gasification
Polygeneration
Power generation
Waste to energy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
973
900
0.925
* Total Citation Counts Rankings
Ranking Based On Selection :83
energy
hybrid technologies
solid oxide fuel cell gas turbine hybrid
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
950
642
0.676
* Total Citation Counts Rankings
Ranking Based On Selection :84
Natural Products Chemistry
Chemical Biology
Analytical Chemistry
Biochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
928
748
0.806
* Total Citation Counts Rankings
Ranking Based On Selection :85
Life Cycle Analysis
Energy Policy
Enhanced Oil Recovery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
900
636
0.707
* Total Citation Counts Rankings
Ranking Based On Selection :86
Critical Mineral Geochemistry
Geologic Carbon Storage
Methane Biogeochemistry
Brine Geochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
892
485
0.544
* Total Citation Counts Rankings
Ranking Based On Selection :87
Computational Multiphase Flows
Nuclear Reactor Thermal-Hydraulics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
842
581
0.690
* Total Citation Counts Rankings
Ranking Based On Selection :88
Geochemistry
Rare Earth Elements
Coal
Energy
Mining
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
838
429
0.512
* Total Citation Counts Rankings
Ranking Based On Selection :89
natural gas
methane emissions
life cycle assessment (LCA)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
828
516
0.623
* Total Citation Counts Rankings
Ranking Based On Selection :90
well plugging
wellbore integrity
wellbore cement
methane hydrates
modeling/simulation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
795
463
0.582
* Total Citation Counts Rankings
Ranking Based On Selection :91
Sensors
Thin Film
Electrochemistry
Corrosion
Metallurgy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
764
681
0.891
* Total Citation Counts Rankings
Ranking Based On Selection :92
Lasers
Spectroscopy
LIBS
Raman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
737
515
0.699
* Total Citation Counts Rankings
Ranking Based On Selection :93
Computational chemistry
Molecular modeling
Gas capture and separation
Metal-organic frameworks
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
718
600
0.836
* Total Citation Counts Rankings
Ranking Based On Selection :94
Solar Energy
Nanotechnology
Carbon Nanotubes
Scanning Photocurrent Microscopy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
715
653
0.913
* Total Citation Counts Rankings
Ranking Based On Selection :95
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
710
602
0.848
* Total Citation Counts Rankings
Ranking Based On Selection :96
Oil and Gas Well Integrity
Carbon Storage
Hydrogen Storage
Numerical Modeling
Data Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
706
610
0.864
* Total Citation Counts Rankings
Ranking Based On Selection :97
Optics
Photonics
Nanoscience
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
670
472
0.704
* Total Citation Counts Rankings
Ranking Based On Selection :98
optimization
process systems engineering
water treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
657
583
0.887
* Total Citation Counts Rankings
Ranking Based On Selection :99
Chemical Looping
Multiphase flow
MFIX
Electrical Capacitance Volume Tomography
Barracuda
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
644
470
0.730
* Total Citation Counts Rankings
Ranking Based On Selection :100
Mathematical modeling and optimization
supply chain management
Game theory
uncertainty management
process simulation & optim
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
641
358
0.559
Nageswara Lalam
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,136
1,097
0.966
Fiber optic sensors
Nonlinear fiber optics
Optoelectronics
Photonics
Optical communications
Scott Crawford
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,031
856
0.830
Nanotechnology
Photoluminescence
Ligand Chemistry
Metal-Organic Framework thin film growth
Rare Earths
William K Epting
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,007
634
0.630
Transport phenomena
microstructural analysis
oxygen transport
fuel cells
electrochemical energy conversion
Naresh Susarla
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
984
731
0.743
process modeling
optimization
systems engineering
cost estimation
energy systems
Richard P Oleksak
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
981
720
0.734
alloy development
high temperature oxidation
materials characterization
nanomaterials
thin films
Martin Detrois
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
978
824
0.843
Metallurgy
Superalloys
Creep
Melting
ESR
Natarianto Indrawan
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
973
900
0.925
Energy Conversion
Gasification
Polygeneration
Power generation
Waste to energy
Nor Farida Harun
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
950
642
0.676
energy
hybrid technologies
solid oxide fuel cell gas turbine hybrid
Patricia Blair Saint-Vincent
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
928
748
0.806
Natural Products Chemistry
Chemical Biology
Analytical Chemistry
Biochemistry
Gregory Cooney
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
900
636
0.707
Burt Thomas
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
892
485
0.544
Critical Mineral Geochemistry
Geologic Carbon Storage
Methane Biogeochemistry
Brine Geochemistry
William D Fullmer
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
842
581
0.690
Computational Multiphase Flows
Nuclear Reactor Thermal-Hydraulics
Scott N Montross
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
838
429
0.512
Geochemistry
Rare Earth Elements
Coal
Energy
Mining
James Littlefield
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
828
516
0.623
Eilis Jill Rosenbaum
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
795
463
0.582
well plugging
wellbore integrity
wellbore cement
methane hydrates
modeling/simulation
Ruishu Feng Wright
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
764
681
0.891
Sensors
Thin Film
Electrochemistry
Corrosion
Metallurgy
Daniel A Hartzler
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
737
515
0.699
Jongwoo Park
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
718
600
0.836
Computational chemistry
Molecular modeling
Gas capture and separation
Metal-organic frameworks
Lee Aspitarte
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
715
653
0.913
Solar Energy
Nanotechnology
Carbon Nanotubes
Scanning Photocurrent Microscopy
Johnathan Moore
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
710
602
0.848
Greg Lackey
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
706
610
0.864
Oil and Gas Well Integrity
Carbon Storage
Hydrogen Storage
Numerical Modeling
Data Science
Jeffrey Wuenschell
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
670
472
0.704
Tim Bartholomew
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
657
583
0.887
Justin Weber
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
644
470
0.730
Chemical Looping
Multiphase flow
MFIX
Electrical Capacitance Volume Tomography
Barracuda
Miguel Angel Zamarripa Perez
National Energy Technology Laboratory
Pittsburgh, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
641
358
0.559
Mathematical modeling and optimization
supply chain management
Game theory
uncertainty management
process simulation & optim