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University · Yokohama · Japan

Yokohama National University

In research, Yokohama National University stands highest in Physical Sciences (#1,926 of 12,888 worldwide), Engineering (#1,659 of 6,636 worldwide) and Computer Science (#2,182 of 4,667 worldwide), 2022–2025. Relative to its size it is most specialised in Atomic and Molecular Physics, and Optics — Atomic and Molecular Physics, and Optics is 4.8× its share of world research.

ynu.ac.jpROR OpenAlex
World rank, 2022–2025
#2,973
of 28,054 · #1,215 all time
Rank in Japan
#51
of 1,070
Research works
21k
▼ 8% vs 2013–17
Citations
257k
12.2 per fractional work
Top-10% rate
8.0%
record average 16.5%
Open access
43%
world 28%

What is Yokohama National University known for in research?

The fields where it stands highest, 2022–2025, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Physical SciencesDomain #1,926 of 12,888 7.8%1,970 #809
EngineeringField #1,659 of 6,636 6.8%969 #697
Computer ScienceField #2,182 of 4,667 9.2%279 #1220
Electrical and Electronic EngineeringSubfield #1,146 of 2,318 5.3%345 #448
Physics and AstronomyField #957 of 1,646 8.4%155 #713
Social SciencesDomain #6,141 of 10,521 8.4%274 #3852
Civil and Structural EngineeringSubfield #535 of 896 13.7%108 #806
Environmental ScienceField #2,151 of 3,551 11.9%129 #1619
Life SciencesDomain #4,880 of 7,800 9.4%123 #5795
MedicineField #6,612 of 10,443 10.1%62 #10479

Each strip is that field’s whole ranked pool, with the notch where Yokohama National University sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no world mark, because the world rate differs by field (from about 6% to 21% in this record).

Which of those standings moved

The same fields on both windows: where it stood over the whole record, and where it stands in 2022–2025. The distance is the story, and it is the one thing the two rank columns above cannot show.

  1. Physical Sciences#809 #1,926
  2. Engineering#697 #1,659
  3. Computer Science#1,220 #2,182
  4. Electrical and Electronic Engineering#448 #1,146
  5. Physics and Astronomy#713 #957
  6. Social Sciences#3,852 #6,141
  7. Civil and Structural Engineering#806 #535
  8. Environmental Science#1,619 #2,151
  9. Life Sciences#5,795 #4,880
  10. Medicine#10,479 #6,612
all time2022–2025, better2022–2025, worse

A dot further right is a better standing. Fields it was not ranked in over the whole record are left out.

What does Yokohama National University specialise in?

Where its research is concentrated relative to its size: Atomic and Molecular Physics, and Optics takes 4.8× the share of its output that it takes of world research.

  1. Atomic and Molecular Physics, and OpticsSubfield · 84.1 works4.8×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.26× its world share, 30 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.49× its world share, 64 worksBiochemistry, Geneti…Immunology and Microbiology: 0.09× its world share, 2 worksImmunology and Micro…Neuroscience: 0.51× its world share, 20 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.61× its world share, 5 worksPharmacology, Toxico…Chemical Engineering: 3.21× its world share, 28 worksChemical EngineeringChemistry: 1.97× its world share, 76 worksChemistryComputer Science: 1.46× its world share, 278 worksComputer ScienceEarth and Planetary Sciences: 1.32× its world share, 51 worksEarth and Planetary …Energy: 2.31× its world share, 52 worksEnergyEngineering: 2.64× its world share, 969 worksEngineeringEnvironmental Science: 1.07× its world share, 129 worksEnvironmental ScienceMaterials Science: 2.24× its world share, 192 worksMaterials ScienceMathematics: 1.42× its world share, 41 worksMathematicsPhysics and Astronomy: 2.85× its world share, 155 worksPhysics and AstronomyDentistry: 0.07× its world share, 1 worksDentistryHealth Professions: 0.22× its world share, 14 worksHealth ProfessionsMedicine: 0.13× its world share, 62 worksMedicineNursing: 0.22× its world share, 3 worksNursingVeterinary: 0.18× its world share, 1 worksVeterinaryArts and Humanities: 0.16× its world share, 11 worksArts and HumanitiesBusiness, Management and Accounting: 0.40× its world share, 32 worksBusiness, Management…Decision Sciences: 1.05× its world share, 25 worksDecision SciencesEconomics, Econometrics and Finance: 0.84× its world share, 44 worksEconomics, Econometr…Psychology: 0.38× its world share, 29 worksPsychologySocial Sciences: 0.43× its world share, 133 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Chemical Engineering, 3.2×. Every wedge is a field page.

Who are the top researchers at Yokohama National University?

Ranked on the composite score, Fumio Takahashi, Ken‐ichiro Ota and Yasuo Kokubun lead among researchers whose main affiliation is Yokohama National University.

  1. 1 Fumio Takahashi Japan · #22,437 worldwide 665 citations · 40 works
  2. 2 Ken‐ichiro Ota Japan · #62,415 worldwide 658 citations · 44 works
  3. 3 Yasuo Kokubun Japan · #63,310 worldwide 358 citations · 73 works
  4. 4 Seiya Negami Japan · #67,916 worldwide 352 citations · 29 works
  5. 5 Noriaki Wakao Japan · #121,368 worldwide 300 citations · 42 works
  6. 6 Atsuo Kawamura Japan · #150,330 worldwide 465 citations · 118 works
  7. 7 Motohiro Nishio Japan · #170,500 worldwide 155 citations · 24 works
  8. 8 Yasushi Yokoyama Japan · #173,566 worldwide 267 citations · 64 works
  9. 9 Shinsuke Watanabe Japan · #173,908 worldwide 112 citations · 52 works
  10. 10 Takashi Maekawa Japan · #185,115 worldwide 189 citations · 34 works
All ranked researchers at Yokohama National University

Which keywords describe research at Yokohama National University?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Cathode Materials, Biosensors, Energy Storage, Biomedical Applications, Integrated Circuits, Nanoparticles, Silicon Photonics and Optical Modulators.

▲ more of its work than of the world’s◆ about the world’s share▼ less than the world’s

Size is fractional works in 2022–2025 in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Deep Learning78◆ 0.93×66 topics
  2. Machine Learning77◆ 0.97×63 topics
  3. Biomedical Applications64▲ 2.2×33 topics
  4. Nanoparticles63▲ 2.0×35 topics
  5. Environmental Impact57▲ 1.38×41 topics
  6. Biosensors57▲ 4.5×12 topics
  7. Energy Storage55▲ 3.4×10 topics
  8. Cathode Materials55▲ 5.7×3 topics
  9. Mechanical Properties48▲ 2.0×30 topics
  10. Nanomaterials45▲ 1.73×17 topics
  11. Catalysis43▲ 2.6×24 topics
  12. Lithium-ion Batteries41▲ 4.0×4 topics
  13. Thermal Management34▲ 4.2×7 topics
  14. Integrated Circuits34▲ 8.8×3 topics
  15. Silicon Photonics32▲ 12×2 topics
  16. Optical Modulators32▲ 8.8×3 topics
  17. Rechargeable Batteries31▲ 4.7×2 topics
  18. Raman Lasers31▲ 11×2 topics
  19. Electrocatalysis30▲ 4.4×5 topics
  20. Power Electronics29▲ 3.6×8 topics
  21. Microcavities29▲ 11×1 topic
  22. Nanophotonic Waveguides29▲ 12×1 topic
  23. Particle Swarm Optimization28▲ 9.6×3 topics
  24. Evolutionary Algorithms28▲ 11×4 topics
  25. Numerical Simulation28▲ 3.9×13 topics
  26. Lithium-Sulfur Batteries27▲ 7.6×2 topics
  27. Battery Technology26▲ 3.8×3 topics
  28. Spintronics25▲ 8.0×4 topics
  29. Catalysts25▲ 5.2×3 topics
  30. Energy Conversion24▲ 4.8×4 topics
  31. Optical Fiber24▲ 9.2×3 topics
  32. Ionic Conductivity24▲ 7.1×2 topics
  33. Fuel Cells24▲ 6.2×3 topics
  34. Nanostructured Cathodes24▲ 7.8×1 topic
  35. Solid-State Electrolytes24▲ 7.8×1 topic
  36. Quantum Information20▲ 7.2×3 topics
  37. Microwave Photonics20▲ 9.3×2 topics
  38. Quantum Computing20▲ 7.8×4 topics
  39. Differential Evolution19▲ 11×2 topics
  40. Quantum Simulation19▲ 9.6×2 topics

Which research topics does Yokohama National University publish most on?

By volume in 2022–2025: Photonic and Optical Devices, Advanced Battery Materials and Technologies, Advancements in Battery Materials and Electrocatalysts for Energy Conversion.

Photonic and Optical Dev…29Photonic and Optical Devices: 29 fractional worksAdvanced Battery Materia…24Advanced Battery Materials and Technologies: 24 fractional worksAdvancements in Battery Materials: 22 fractional worksElectrocatalysts for Energy Conversion: 20 fractional worksLinguistic, Cultural, and Literary Studies: 19 fractional worksLegal and Regulatory Analysis: 19 fractional worksMilitary Technology and Strategies: 19 fractional worksAdvanced Fiber Optic Sen…18Advanced Fiber Optic Sensors: 18 fractional worksQuantum Computing Algorithms and Architecture: 17 fractional worksFuel Cells and Related Materials: 16 fractional works
Electrical and Electronic EngineeringRenewable Energy, Sustainability and the EnvironmentSociology and Political ScienceTransportation2 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Photonic and Optical Devices Electrical and Electronic Engineering 29 works
  2. 2 Advanced Battery Materials and Technologies Electrical and Electronic Engineering 24 works
  3. 3 Advancements in Battery Materials Electrical and Electronic Engineering 22 works
  4. 4 Electrocatalysts for Energy Conversion Renewable Energy, Sustainability and the Environment 20 works
  5. 5 Linguistic, Cultural, and Literary Studies Sociology and Political Science 19 works
  6. 6 Legal and Regulatory Analysis Transportation 19 works
  7. 7 Military Technology and Strategies Aerospace Engineering 19 works
  8. 8 Advanced Fiber Optic Sensors Electrical and Electronic Engineering 18 works
  9. 9 Quantum Computing Algorithms and Architecture Artificial Intelligence 17 works
  10. 10 Fuel Cells and Related Materials Electrical and Electronic Engineering 16 works

How open and international is its research?

Against the world’s own shares — the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available43.2%not open56.8%

World: 28% of research is openly available.

with international co-authors10.0%domestic only90.0%

World: 19% is written across borders.

How has Yokohama National University's research output changed?

Output in 2018–2022 was 8% lower than in 2013–2017.

1990200020102020
grewheldshrank

The same series as a ribbon — one cell per year, darker for more. The line above answers how much; this answers when.

Other research institutions in Yokohama

All research institutions in Yokohama

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners are in the interactive view on the map.