World Scientist and University Rankings 2025
Japan Engineering & Technology / Mechanical Engineering 515 Scientists Subject Rankings - 2025
The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 197 sub-branches at global, national, and regional levels. These analyses are based on indicators such as the H-index, i10-index, and citation count, including their values from the last 6 years. As of Jan 30, 2025, the rankings are determined according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in their Beta phase. This is due to the exclusion of (873.690) scientists categorized under ‘Others’, whose profiles have yet to be determined, edited, or classified. As updates are made to these fields, the rankings will be adjusted accordingly. Note: Please keep this in mind while reviewing the rankings. For further details, explore our [University Subject Rankings].
* Total H IndexRankings
Ranking Based On Selection: 1
Adsorption heat pump system
adsorption desalination
heat transfer enhancement
energy efficiency assessment
Metrics
H-Index
i10 Index
Citation Counts
86
385
25,168
* Total H IndexRankings
Ranking Based On Selection: 2
aerosol
climate change
modelling
Metrics
H-Index
i10 Index
Citation Counts
85
217
41,120
* Total H IndexRankings
Ranking Based On Selection: 3
computational mechanics
material failure
composites
solid mechanics
Metrics
H-Index
i10 Index
Citation Counts
69
223
13,582
* Total H IndexRankings
Ranking Based On Selection: 4
pulsed ESR
quantum control of molecular spins
Metrics
H-Index
i10 Index
Citation Counts
60
298
29,532
* Total H IndexRankings
Ranking Based On Selection: 5
heat resistant steels
creep strength
Metrics
H-Index
i10 Index
Citation Counts
59
189
13,462
* Total H IndexRankings
Ranking Based On Selection: 6
Combustion
Aerospace Engineering
Metrics
H-Index
i10 Index
Citation Counts
54
113
12,824
* Total H IndexRankings
Ranking Based On Selection: 7
Topology Optimization
Optimum Design
Structural Optimization
Metrics
H-Index
i10 Index
Citation Counts
54
176
11,516
* Total H IndexRankings
Ranking Based On Selection: 8
Sensors materials and interfaces
Nanotechnology
Turnkey Systems
3D & 4D printing.
Metrics
H-Index
i10 Index
Citation Counts
50
143
9,977
* Total H IndexRankings
Ranking Based On Selection: 9
Robotics
Control Engineering
Rescue Engineering
Metrics
H-Index
i10 Index
Citation Counts
50
232
9,982
* Total H IndexRankings
Ranking Based On Selection: 10
Heat transfer
Fluid mechanics
Viscous flow
Convection
Porous media
Metrics
H-Index
i10 Index
Citation Counts
50
148
9,232
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* Total H IndexRankings
Ranking Based On Selection: 11
Combustion
Flame
Energy
Metrics
H-Index
i10 Index
Citation Counts
49
117
10,119
* Total H IndexRankings
Ranking Based On Selection: 12
Robotics
Aerospace
and Mechanical Engineering
Metrics
H-Index
i10 Index
Citation Counts
49
214
9,766
* Total H IndexRankings
Ranking Based On Selection: 13
Biofluids
Computational biomechanics
Animal flight
Hemodynamics
Biomimetics
Metrics
H-Index
i10 Index
Citation Counts
48
154
12,345
* Total H IndexRankings
Ranking Based On Selection: 14
Chemical Physics
Physical Chemistry
Computational Physics
Computational Chemistry
Molecular Simulation
Metrics
H-Index
i10 Index
Citation Counts
48
150
8,434
* Total H IndexRankings
Ranking Based On Selection: 15
tribology
Metrics
H-Index
i10 Index
Citation Counts
48
160
7,754
* Total H IndexRankings
Ranking Based On Selection: 16
Wind Engineering
Computational Wind Engineering
Snow Engineering
Urban Environment
Metrics
H-Index
i10 Index
Citation Counts
45
80
11,463
* Total H IndexRankings
Ranking Based On Selection: 17
Mechanics
Computational Materials Science
Metrics
H-Index
i10 Index
Citation Counts
45
129
9,958
* Total H IndexRankings
Ranking Based On Selection: 18
thermal science
fluid science
Metrics
H-Index
i10 Index
Citation Counts
45
190
8,777
* Total H IndexRankings
Ranking Based On Selection: 19
Plasma Etching
Nanotechnology
Nano-fabrication
Nano-materials
Nano-energy Devices
Metrics
H-Index
i10 Index
Citation Counts
45
248
12,250
* Total H IndexRankings
Ranking Based On Selection: 20
Fluid Mechanics
Combustion
Multiphase Flow
Heat Transfer
Metrics
H-Index
i10 Index
Citation Counts
44
120
6,954
* Total H IndexRankings
Ranking Based On Selection: 21
Aerosol
Electron Microscopy
Metrics
H-Index
i10 Index
Citation Counts
43
77
7,485
* Total H IndexRankings
Ranking Based On Selection: 22
physical oceanography
coastal oceanography
oceanography
ocean plastics
microplastics
Metrics
H-Index
i10 Index
Citation Counts
43
84
8,193
* Total H IndexRankings
Ranking Based On Selection: 23
Cavitation
Hydraulic Machinery
Turbomachinery
Metrics
H-Index
i10 Index
Citation Counts
42
125
8,290
* Total H IndexRankings
Ranking Based On Selection: 24
Metal Forming
Plasticity
Metrics
H-Index
i10 Index
Citation Counts
41
114
7,258
* Total H IndexRankings
Ranking Based On Selection: 25
Thermal Physiology
Metrics
H-Index
i10 Index
Citation Counts
41
113
6,898
Bidyut Baran Saha
Kyushu University
Fukuoka, Japan
Metrics
H-Index
i10-Index
Citation Counts
86
385
25,168
Adsorption heat pump system
adsorption desalination
heat transfer enhancement
energy efficiency assessment
Toshihiko Takemura
Kyushu University
Fukuoka, Japan
Metrics
H-Index
i10-Index
Citation Counts
85
217
41,120
aerosol
climate change
modelling
Tinh Quoc Bui
Metrics
H-Index
i10-Index
Citation Counts
69
223
13,582
computational mechanics
material failure
composites
solid mechanics
pulsed ESR
quantum control of molecular spins
Abe Fujio 阿部冨士雄
Metrics
H-Index
i10-Index
Citation Counts
59
189
13,462
heat resistant steels
creep strength
Hideaki Kobayashi
Tohoku University
Sendai, Japan
Metrics
H-Index
i10-Index
Citation Counts
54
113
12,824
Combustion
Aerospace Engineering
Shinji Nishiwaki
Kyoto University
Kyoto, Japan
Metrics
H-Index
i10-Index
Citation Counts
54
176
11,516
Topology Optimization
Optimum Design
Structural Optimization
Ajit Khosla
Yamagata University
Yamagata, Japan
Metrics
H-Index
i10-Index
Citation Counts
50
143
9,977
Sensors materials and interfaces
Nanotechnology
Turnkey Systems
3D & 4D printing.
Fumitoshi Matsuno
Kyoto University
Kyoto, Japan
Metrics
H-Index
i10-Index
Citation Counts
50
232
9,982
Robotics
Control Engineering
Rescue Engineering
Akira Nakayama
Shizuoka University
Shizuoka, Japan
Metrics
H-Index
i10-Index
Citation Counts
50
148
9,232
Heat transfer
Fluid mechanics
Viscous flow
Convection
Porous media
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
Kaoru Maruta
Tohoku University
Sendai, Japan
Metrics
H-Index
i10-Index
Citation Counts
49
117
10,119
Combustion
Flame
Energy
Masaru Uchiyama
Tohoku University
Sendai, Japan
Metrics
H-Index
i10-Index
Citation Counts
49
214
9,766
Robotics
Aerospace
and Mechanical Engineering
Biofluids
Computational biomechanics
Animal flight
Hemodynamics
Biomimetics
Chemical Physics
Physical Chemistry
Computational Physics
Computational Chemistry
Molecular Simulation
Shinya Sasaki
Tokyo University of Science
Tokyo, Japan
Metrics
H-Index
i10-Index
Citation Counts
48
160
7,754
Yoshihide Tominaga
Niigata Institute of Technology
Kashiwazaki, Japan
Metrics
H-Index
i10-Index
Citation Counts
45
80
11,463
Wind Engineering
Computational Wind Engineering
Snow Engineering
Urban Environment
Shigenobu Ogata
Osaka University
Suita, Japan
Metrics
H-Index
i10-Index
Citation Counts
45
129
9,958
Mechanics
Computational Materials Science
Shigenao Maruyama
Hachinohe College
Aomori, Japan
Metrics
H-Index
i10-Index
Citation Counts
45
190
8,777
thermal science
fluid science
S Samukawa Seiji Samukawa
Tohoku University
Sendai, Japan
Metrics
H-Index
i10-Index
Citation Counts
45
248
12,250
Plasma Etching
Nanotechnology
Nano-fabrication
Nano-materials
Nano-energy Devices
Fluid Mechanics
Combustion
Multiphase Flow
Heat Transfer
Aerosol
Electron Microscopy
Atsuhiko Isobe
Kyushu University
Fukuoka, Japan
Metrics
H-Index
i10-Index
Citation Counts
43
84
8,193
physical oceanography
coastal oceanography
oceanography
ocean plastics
microplastics
Satoshi Watanabe
Kyushu University
Fukuoka, Japan
Metrics
H-Index
i10-Index
Citation Counts
42
125
8,290
Cavitation
Hydraulic Machinery
Turbomachinery