Koichi Hirayama
- Electrical and Electronic Engineering top 10%
- Atomic and Molecular Physics, and Optics top 5%
- Surfaces, Coatings and Films top 2%
- Biomedical Engineering
- Aerospace Engineering top 10%
- Co-authors
- M. KoshibaYasuhidé TsujiElias N. GlytsisThomas K. GaylordTakashi YasuiDaniel W. WilsonShinji NishiwakiTsuyoshi Nomura
- Topics
- Photonic and Optical Devices (30 papers)Microwave Engineering and Waveguides (23 papers)Electromagnetic Simulation and Numerical Methods (22 papers)
- Cited by
- Surfaces, Coatings and FilmsAtomic and Molecular Physics, and OpticsElectrical and Electronic Engineering
- Journals
- Optics ExpressIEEE Transactions on Microwave Theory and TechniquesJapanese Journal of Applied Physics
- Partner nations
- JapanUnited States
In The Last Decade
Koichi Hirayama
63 papers receiving 804 citations
Peers
Comparison fields: 5 of 48
- Electrical and Electronic Engineering 638
- Atomic and Molecular Physics, and Optics 408
- Surfaces, Coatings and Films 324
- Biomedical Engineering 199
- Aerospace Engineering 88
Countries citing papers authored by Koichi Hirayama
This map shows the geographic impact of Koichi Hirayama'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 Koichi Hirayama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Koichi Hirayama more than expected).
Fields of papers citing papers by Koichi Hirayama
This network shows the impact of papers produced by Koichi Hirayama. 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 Koichi Hirayama. The network helps show where Koichi Hirayama may publish in the future.
Co-authorship network of co-authors of Koichi Hirayama
This figure shows the co-authorship network connecting the top 25 collaborators of Koichi Hirayama. A scholar is included among the top collaborators of Koichi Hirayama 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 Koichi Hirayama. Koichi Hirayama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
| # | Work | Indexed citations |
|---|---|---|
| 1 | 0 | |
| 2 | 0 | |
| 3 | 7 | |
| 4 | 3 | |
| 5 | 14 | |
| 6 | 16 | |
| 7 | 5 | |
| 8 | 1 | |
| 9 | 6 | |
| 10 | A study on function expansion based topology optimization method for dispersion property | 1 |
| 11 | 20 | |
| 12 | 9 | |
| 13 | Microwave Simulator Based on the Finite-Element Method by Use of Commercial Tools | 1 |
| 14 | 4 | |
| 15 | 28 | |
| 16 | 19 | |
| 17 | 53 | |
| 18 | 4 | |
| 19 | 1 | |
| 20 | 25 |
About Koichi Hirayama
Koichi Hirayama is a scholar working on Surfaces, Coatings and Films, Electrical and Electronic Engineering and Atomic and Molecular Physics, and Optics, having authored 67 papers that have together received 851 indexed citations. Recurring topics across this work include Photonic and Optical Devices (30 papers), Microwave Engineering and Waveguides (23 papers) and Electromagnetic Simulation and Numerical Methods (22 papers). The work is most often cited by research in Surfaces, Coatings and Films (324 citations), Atomic and Molecular Physics, and Optics (408 citations) and Electrical and Electronic Engineering (638 citations). Koichi Hirayama has collaborated with scholars based in Japan and United States. Frequent co-authors include M. Koshiba, Yasuhidé Tsuji, Elias N. Glytsis, Thomas K. Gaylord, Takashi Yasui, Daniel W. Wilson, Shinji Nishiwaki, Tsuyoshi Nomura, Yuki Morita and M. Shah Alam. Their work appears in journals such as Optics Express, IEEE Transactions on Microwave Theory and Techniques and Japanese Journal of Applied Physics.
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.