University, Subject, Country, Region, World
Japan 196 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 Feb 03, 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 (870.053) 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: 26
Nanophotonics
Photonic Crystal
Topological Photonics
Quantum Optics
Metrics
H-Index
i10 Index
Citation Counts
48
145
8,269
* Total H IndexRankings
Ranking Based On Selection: 27
Nanotechnology
Nanoscience
Material
Ceramic
Metrics
H-Index
i10 Index
Citation Counts
48
107
7,728
* Total H IndexRankings
Ranking Based On Selection: 28
RF communication
Nanomechanics
Solid state physics
Crystallography
Materials science in electronics
Metrics
H-Index
i10 Index
Citation Counts
47
102
5,962
* Total H IndexRankings
Ranking Based On Selection: 29
Nanodrug Delivery
Biomaterials
Bio Nano Fusion
Nanoparticles
Quantum Dots
Metrics
H-Index
i10 Index
Citation Counts
46
105
10,903
* Total H IndexRankings
Ranking Based On Selection: 30
Micro/nanotechnology
Metrics
H-Index
i10 Index
Citation Counts
44
221
9,033
* Total H IndexRankings
Ranking Based On Selection: 31
Nanoscience
nanorod
Metrics
H-Index
i10 Index
Citation Counts
43
90
7,878
* Total H IndexRankings
Ranking Based On Selection: 32
Nanomaterials
Metrics
H-Index
i10 Index
Citation Counts
42
106
6,043
* Total H IndexRankings
Ranking Based On Selection: 33
Nanoporous materials
Dealloying
Energy materials
Graphene
TEM
Metrics
H-Index
i10 Index
Citation Counts
41
62
5,942
* Total H IndexRankings
Ranking Based On Selection: 34
Nanopore
Lipid bilayer
DNA computing
Microfabrication
Molecular Robotics
Metrics
H-Index
i10 Index
Citation Counts
39
80
5,012
* Total H IndexRankings
Ranking Based On Selection: 35
Nanoscience
Nanotechnology
Nanocarbons
" Energy Materials" "Organic and Inorganic Materials"
Metrics
H-Index
i10 Index
Citation Counts
37
141
4,734
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* Total H IndexRankings
Ranking Based On Selection: 36
Nanotechnology
Magnetic Recording
Spintronics
Metrics
H-Index
i10 Index
Citation Counts
37
111
5,001
* Total H IndexRankings
Ranking Based On Selection: 37
Metamaterials
Nanophotonics
Optical MEMS
Microfabrication
Subwavelength gratings
Metrics
H-Index
i10 Index
Citation Counts
36
86
5,817
* Total H IndexRankings
Ranking Based On Selection: 38
nanofabrication
electrochemistry
plating
anodic oxidation
ReRAM
Metrics
H-Index
i10 Index
Citation Counts
36
95
4,977
* Total H IndexRankings
Ranking Based On Selection: 39
Thermopolaritonics
Thermoplasmonics
Thermal Science
Thermal Waves
2D Radiation
Metrics
H-Index
i10 Index
Citation Counts
35
78
3,449
* Total H IndexRankings
Ranking Based On Selection: 40
nanotechnology
electron microscopy
Metrics
H-Index
i10 Index
Citation Counts
35
92
4,143
* Total H IndexRankings
Ranking Based On Selection: 41
Carbon nanomaterials
Surface/Interface
Wettability/Energy storage
Metrics
H-Index
i10 Index
Citation Counts
34
45
5,782
* Total H IndexRankings
Ranking Based On Selection: 42
Gas/Chemical Sensors
Microneedles
Microfludics
Biomedical Devices
Metrics
H-Index
i10 Index
Citation Counts
34
55
4,095
* Total H IndexRankings
Ranking Based On Selection: 43
nano-carbons
carbon nanotubes
batteries
capacitors
high pressure chemistry
Metrics
H-Index
i10 Index
Citation Counts
34
76
3,592
* Total H IndexRankings
Ranking Based On Selection: 44
Nanostructured thin films
Metrics
H-Index
i10 Index
Citation Counts
34
138
5,307
* Total H IndexRankings
Ranking Based On Selection: 45
fuel cells
metal-air batteries
nanomaterials
ORR
In-situ XAFS
Metrics
H-Index
i10 Index
Citation Counts
33
59
6,420
* Total H IndexRankings
Ranking Based On Selection: 46
Protonics
Fuel Cells
Solid State Battery
Nanomaterials
Polymer Interface
Metrics
H-Index
i10 Index
Citation Counts
32
78
3,215
* Total H IndexRankings
Ranking Based On Selection: 47
photonics
quantum physics
nanotechnology
Metrics
H-Index
i10 Index
Citation Counts
32
64
4,209
* Total H IndexRankings
Ranking Based On Selection: 48
Nanoscience and Nanotechnology
Materials Processing
Ceramics
Composites
Materials Characterizations
Metrics
H-Index
i10 Index
Citation Counts
31
39
6,063
* Total H IndexRankings
Ranking Based On Selection: 49
Nanotechnology
Photovoltaic
Metrics
H-Index
i10 Index
Citation Counts
30
40
4,976
* Total H IndexRankings
Ranking Based On Selection: 50
nanoparticles
alloy nanoparticles
nanoclusters
lithium ion batteries
zinc ion batteries
Metrics
H-Index
i10 Index
Citation Counts
30
70
2,328
Satoshi Iwamoto
University of Tokyo
Tokyo, Japan
Metrics
H-Index
i10-Index
Citation Counts
48
145
8,269
Nanophotonics
Photonic Crystal
Topological Photonics
Quantum Optics
Nanotechnology
Nanoscience
Material
Ceramic
RF communication
Nanomechanics
Solid state physics
Crystallography
Materials science in electronics
Nanodrug Delivery
Biomaterials
Bio Nano Fusion
Nanoparticles
Quantum Dots
Micro/nanotechnology
Yasuro Niidome
Kagoshima University
Kagoshima, Japan
Metrics
H-Index
i10-Index
Citation Counts
43
90
7,878
Shinya Maenosono
Metrics
H-Index
i10-Index
Citation Counts
42
106
6,043
Nanoporous materials
Dealloying
Energy materials
Graphene
TEM
Ryuji Kawano
Metrics
H-Index
i10-Index
Citation Counts
39
80
5,012
Nanopore
Lipid bilayer
DNA computing
Microfabrication
Molecular Robotics
Yasuhiko Hayashi
Okayama University
Okayama, Japan
Metrics
H-Index
i10-Index
Citation Counts
37
141
4,734
Nanoscience
Nanotechnology
Nanocarbons
" Energy Materials" "Organic and Inorganic Materials"
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Akimitsu Morisako
Shinshu University
Matsumoto, Japan
Metrics
H-Index
i10-Index
Citation Counts
37
111
5,001
Nanotechnology
Magnetic Recording
Spintronics
Yoshiaki Kanamori|金森 義明, Y Kanamori
Tohoku University
Sendai, Japan
Metrics
H-Index
i10-Index
Citation Counts
36
86
5,817
Metamaterials
Nanophotonics
Optical MEMS
Microfabrication
Subwavelength gratings
Shoso Shingubara
Kansai University
Suita, Japan
Metrics
H-Index
i10-Index
Citation Counts
36
95
4,977
nanofabrication
electrochemistry
plating
anodic oxidation
ReRAM
Jose Ordonez Miranda
University of Tokyo
Tokyo, Japan
Metrics
H-Index
i10-Index
Citation Counts
35
78
3,449
Thermopolaritonics
Thermoplasmonics
Thermal Science
Thermal Waves
2D Radiation
Masayuki Shimojo
Metrics
H-Index
i10-Index
Citation Counts
35
92
4,143
nanotechnology
electron microscopy
Wei Weng
Metrics
H-Index
i10-Index
Citation Counts
34
45
5,782
Carbon nanomaterials
Surface/Interface
Wettability/Energy storage
Ganesh Kumar Mani
Tokai University
Tokyo, Japan
Metrics
H-Index
i10-Index
Citation Counts
34
55
4,095
Gas/Chemical Sensors
Microneedles
Microfludics
Biomedical Devices
Shinji Kawasaki
Nagoya Institute of Technology
Nagoya, Japan
Metrics
H-Index
i10-Index
Citation Counts
34
76
3,592
nano-carbons
carbon nanotubes
batteries
capacitors
high pressure chemistry
Motofumi Suzuki
Kyoto University
Kyoto, Japan
Metrics
H-Index
i10-Index
Citation Counts
34
138
5,307
Nanostructured thin films
Xiao Zhao
Metrics
H-Index
i10-Index
Citation Counts
33
59
6,420
fuel cells
metal-air batteries
nanomaterials
ORR
In-situ XAFS
Yuki Nagao
Metrics
H-Index
i10-Index
Citation Counts
32
78
3,215
Protonics
Fuel Cells
Solid State Battery
Nanomaterials
Polymer Interface
photonics
quantum physics
nanotechnology
Mehdi Estili
Metrics
H-Index
i10-Index
Citation Counts
31
39
6,063
Nanoscience and Nanotechnology
Materials Processing
Ceramics
Composites
Materials Characterizations
Nanotechnology
Photovoltaic
Mai Thanh Nguyen
Hokkaido University
Sapporo, Japan
Metrics
H-Index
i10-Index
Citation Counts
30
70
2,328
nanoparticles
alloy nanoparticles
nanoclusters
lithium ion batteries
zinc ion batteries