Koji Uematsu

670 total citations
5 papers, 547 citations indexed

About

Koji Uematsu is a scholar working on Condensed Matter Physics, Atomic and Molecular Physics, and Optics and Electrical and Electronic Engineering. According to data from OpenAlex, Koji Uematsu has authored 5 papers receiving a total of 547 indexed citations (citations by other indexed papers that have themselves been cited), including 4 papers in Condensed Matter Physics, 3 papers in Atomic and Molecular Physics, and Optics and 3 papers in Electrical and Electronic Engineering. Recurrent topics in Koji Uematsu's work include GaN-based semiconductor devices and materials (4 papers), Semiconductor Quantum Structures and Devices (3 papers) and Semiconductor materials and devices (2 papers). Koji Uematsu is often cited by papers focused on GaN-based semiconductor devices and materials (4 papers), Semiconductor Quantum Structures and Devices (3 papers) and Semiconductor materials and devices (2 papers). Koji Uematsu collaborates with scholars based in Japan. Koji Uematsu's co-authors include Kensaku Motoki, Takuji Okahisa, Seiji Nakahata, Naoki Matsumoto, Hitoshi Kasai, Kikurou Takemoto, Hisashi Seki, Akinori Koukitu, Yoshinao Kumagai and Masaki Ueno and has published in prestigious journals such as Optics Express, Japanese Journal of Applied Physics and Journal of Crystal Growth.

In The Last Decade

Koji Uematsu

5 papers receiving 527 citations

Peers

Koji Uematsu
Eric D. Readinger United States
Veit Hoffmann Germany
Kensaku Motoki Japan
Hiroya Kimura Japan
F. J. Pacheco Spain
Sibel Gökden Türkiye
Takuji Okahisa Japan
C. S. Chern United States
Seiji Nakahata Japan
L. Considine Ireland
Eric D. Readinger United States
Koji Uematsu
Citations per year, relative to Koji Uematsu Koji Uematsu (= 1×) peers Eric D. Readinger

Countries citing papers authored by Koji Uematsu

Since Specialization
Citations

This map shows the geographic impact of Koji Uematsu's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Koji Uematsu with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Koji Uematsu more than expected).

Fields of papers citing papers by Koji Uematsu

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Koji Uematsu. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Koji Uematsu. The network helps show where Koji Uematsu may publish in the future.

Co-authorship network of co-authors of Koji Uematsu

This figure shows the co-authorship network connecting the top 25 collaborators of Koji Uematsu. A scholar is included among the top collaborators of Koji Uematsu based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Koji Uematsu. Koji Uematsu is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

5 of 5 papers shown
1.
Uematsu, Koji, Ken-ichiro Maki, & Chiko Otani. (2012). Terahertz beam steering using interference of femtosecond optical pulses. Optics Express. 20(20). 22914–22914. 11 indexed citations
2.
Motoki, Kensaku, et al.. (2007). Dislocation reduction in GaN crystal by advanced-DEEP. Journal of Crystal Growth. 305(2). 377–383. 96 indexed citations
3.
Motoki, Kensaku, Takuji Okahisa, Seiji Nakahata, et al.. (2002). Growth and characterization of freestanding GaN substrates. Journal of Crystal Growth. 237-239. 912–921. 150 indexed citations
4.
Motoki, Kensaku, Takuji Okahisa, Seiji Nakahata, et al.. (2002). Preparation of large GaN substrates. Materials Science and Engineering B. 93(1-3). 123–130. 33 indexed citations
5.
Motoki, Kensaku, Takuji Okahisa, Naoki Matsumoto, et al.. (2001). Preparation of Large Freestanding GaN Substrates by Hydride Vapor Phase Epitaxy Using GaAs as a Starting Substrate. Japanese Journal of Applied Physics. 40(2B). L140–L140. 257 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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2026