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Researcher · NEC (Japan) · Japan

Akira Usui

Akira Usui publishes mostly in Geochemistry and Petrology, Electrical and Electronic Engineering and Atomic and Molecular Physics, and Optics, on topics such as Geochemistry and Elemental Analysis, GaN-based semiconductor devices and materials and Semiconductor Quantum Structures and Devices.

ORCID 0000-0001-6391-2937 OpenAlex
World rank
#1,608,423
of 7,710,434 ranked researchers
Rank in Japan
#26,429
of 383,136
Works
264
Citations
7.6k
Citations per work
28.8
h-index
45
i10-index 125Top 2.2% in Geochemistry and Petrology
Akira Usui

What does Akira Usui research?

Akira Usui's work is mostly in Earth and Planetary Sciences (22%), Physics and Astronomy (22%), Engineering (12%).

Physical Sciences: 163 works · 61.6% of their workEarth and Planetary Sciences: 59 works · 22.3% of their workGeochemistry and Petrology: 45 works · 17.2% of their workPaleontology: 13 works · 5.1% of their workPhysics and Astronomy: 57 works · 21.6% of their workAtomic and Molecular Physics, and Optics: 31 works · 11.7% of their workCondensed Matter Physics: 26 works · 9.9% of their workEngineering: 32 works · 12.3% of their workElectrical and Electronic Engineering: 32 works · 12.3% of their workMaterials Science: 14 works · 5.4% of their workMaterials Chemistry: 14 works · 5.4% of their workEverything else: 101 works · 38.4% of their workTHEIR WORKAkira Usui264works
Physical Sciences62%

Their six largest subfields, inside their fields and domains; the grey slice is everything else they publish. The interactive view splits every one of their works down to single topics.

The fields and subfields, with their numbers
    1. Earth and Planetary Sciences5922.3%
    2. Physics and Astronomy5721.6%
    3. Engineering3212.3%
    4. Materials Science145.4%
  2. Everything else10138.4%
  1. 1Geochemistry and Petrology17% of their works
  2. 2Electrical and Electronic Engineering12% of their works
  3. 3Atomic and Molecular Physics, and Optics12% of their works
  4. 4Condensed Matter Physics10% of their works
  5. 5Materials Chemistry5% of their works
  6. 6Paleontology5% of their works

Research topics

Which keywords describe Akira Usui's research?

The keywords of their largest research topics: Band Parameters, Manganese Oxides, Nanowires, Rare Earth Elements, III-Nitrides, Semiconductors, Quantum Dots and Semiconductor.

Size is their works in the topics tagged with each word, from their 8 largest topics. Each links to the topic it comes from most. The words come from the keyword list OpenAlex gives each topic, not from the text of the papers, so a word can appear that none of the papers uses.

All 18 words, with their numbers
  1. Band Parameters1142 topics
  2. Manganese Oxides1141 topic
  3. Nanowires1142 topics
  4. Rare Earth Elements1141 topic
  5. III-Nitrides651 topic
  6. Semiconductors651 topic
  7. Quantum Dots491 topic
  8. Semiconductor491 topic
  9. Atomic Layer Deposition391 topic
  10. High-k Dielectrics391 topic
  11. Paleoproductivity341 topic
  12. Paleoredox341 topic
  13. Climate Change261 topic
  14. Geomagnetic Field261 topic
  15. Magnetosome Formation261 topic
  16. Paleoclimatology261 topic
  17. Actinides241 topic
  18. Uranium241 topic

Where does Akira Usui work?

Akira Usui's main affiliation in the publication record is NEC (Japan), Japan.

How many publications and citations does Akira Usui have?

OpenAlex counts 264 works and 7,599 citations for Akira Usui, an h-index of 45, ranking #1,608,423 of 7,710,434 researchers worldwide on the quality score.

Ranked on field-normalised citation excellence (50%), output (30%) and citations (20%). Counts come from OpenAlex author records, which occasionally merge different people who share a name or split one person into several.

Other researchers named Akira Usui

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