Keigo Otsuka

667 total citations
39 papers, 499 citations indexed

About

Keigo Otsuka is a scholar working on Materials Chemistry, Atomic and Molecular Physics, and Optics and Biomedical Engineering. According to data from OpenAlex, Keigo Otsuka has authored 39 papers receiving a total of 499 indexed citations (citations by other indexed papers that have themselves been cited), including 33 papers in Materials Chemistry, 10 papers in Atomic and Molecular Physics, and Optics and 9 papers in Biomedical Engineering. Recurrent topics in Keigo Otsuka's work include Graphene research and applications (23 papers), Carbon Nanotubes in Composites (22 papers) and 2D Materials and Applications (10 papers). Keigo Otsuka is often cited by papers focused on Graphene research and applications (23 papers), Carbon Nanotubes in Composites (22 papers) and 2D Materials and Applications (10 papers). Keigo Otsuka collaborates with scholars based in Japan, China and United States. Keigo Otsuka's co-authors include Shigeo Maruyama, Taiki Inoue, Shohei Chiashi, Rong Xiang, Yuichiro K. Kato, Nan Fang, Dmitry Levshov, Takashi Taniguchi, Sofie Cambré and Kenji Watanabe and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Nature Communications and Nano Letters.

In The Last Decade

Keigo Otsuka

34 papers receiving 483 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Keigo Otsuka Japan 13 381 118 114 64 46 39 499
Khaleel I. Hassoon Iraq 11 250 0.7× 149 1.3× 144 1.3× 49 0.8× 8 0.2× 39 404
Edgar Felizardo Portugal 10 229 0.6× 115 1.0× 180 1.6× 39 0.6× 29 0.6× 23 388
A.E. Aleksenskiy Russia 11 450 1.2× 109 0.9× 49 0.4× 99 1.5× 18 0.4× 11 490
G. Amiard France 11 259 0.7× 71 0.6× 124 1.1× 37 0.6× 27 0.6× 32 388
Declan N. Weldon Ireland 4 323 0.8× 116 1.0× 69 0.6× 39 0.6× 77 1.7× 7 418
S.J. Moloi South Africa 14 144 0.4× 84 0.7× 215 1.9× 105 1.6× 18 0.4× 48 405
Muhammad Ahsan Shafique Pakistan 10 266 0.7× 38 0.3× 165 1.4× 16 0.3× 11 0.2× 24 360
Huiyue Wei China 6 184 0.5× 68 0.6× 170 1.5× 35 0.5× 5 0.1× 9 329
Hiroyuki Enomoto Japan 11 283 0.7× 32 0.3× 159 1.4× 64 1.0× 31 0.7× 42 428
Y. P. Feng China 10 204 0.5× 52 0.4× 58 0.5× 78 1.2× 10 0.2× 20 349

Countries citing papers authored by Keigo Otsuka

Since Specialization
Citations

This map shows the geographic impact of Keigo Otsuka'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 Keigo Otsuka with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Keigo Otsuka more than expected).

Fields of papers citing papers by Keigo Otsuka

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Keigo Otsuka. 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 Keigo Otsuka. The network helps show where Keigo Otsuka may publish in the future.

Co-authorship network of co-authors of Keigo Otsuka

This figure shows the co-authorship network connecting the top 25 collaborators of Keigo Otsuka. A scholar is included among the top collaborators of Keigo Otsuka 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 Keigo Otsuka. Keigo Otsuka is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Zheng, Yongjia, Akihito Kumamoto, Yanlin Gao, et al.. (2025). Metallic NbS2 One-Dimensional van der Waals Heterostructures. ACS Nano. 19(36). 32800–32809.
2.
Nishida, Jun, Keigo Otsuka, Taketoshi Minato, Yuichiro K. Kato, & Takashi Kumagai. (2025). Ultrafast infrared nano-imaging of local electron-hole dynamics in CVD-grown single-walled carbon nanotubes. Science Advances. 11(25). eadv9584–eadv9584.
3.
Feng, Ya, Yutaka Matsuo, YuHuang Wang, et al.. (2025). Low-Temperature Synthesis of Weakly Confined Carbyne Inside Single-Walled Carbon Nanotubes. ACS Nano. 19(13). 12996–13006. 4 indexed citations
4.
5.
Wang, Shuhui, Dmitry Levshov, Keigo Otsuka, et al.. (2024). Evaluating the Efficiency of Boron Nitride Coating in Single-Walled Carbon-Nanotube-Based 1D Heterostructure Films by Optical Spectroscopy. ACS Nano. 18(14). 9917–9928. 14 indexed citations
6.
Fang, Nan, Yih‐Ren Chang, Shun Fujii, et al.. (2024). Room-temperature quantum emission from interface excitons in mixed-dimensional heterostructures. Nature Communications. 15(1). 2871–2871. 6 indexed citations
7.
Fang, Nan, Yih‐Ren Chang, Shun Fujii, et al.. (2023). Resonant exciton transfer in mixed-dimensional heterostructures for overcoming dimensional restrictions in optical processes. Nature Communications. 14(1). 8152–8152. 7 indexed citations
8.
Otsuka, Keigo, et al.. (2022). Carbon Dioxide Triggers Carbon Nanotube Nucleation: Isotope Labeling Study on the Growth Process of Individual Nanotubes. ECS Journal of Solid State Science and Technology. 11(7). 71002–71002. 2 indexed citations
9.
Otsuka, Keigo, Taiki Inoue, Rong Xiang, et al.. (2022). Universal Map of Gas-Dependent Kinetic Selectivity in Carbon Nanotube Growth. ACS Nano. 16(4). 5627–5635. 12 indexed citations
10.
Fang, Nan, Shun Fujii, Keigo Otsuka, et al.. (2022). Quantization of Mode Shifts in Nanocavities Integrated with Atomically Thin Sheets. Advanced Optical Materials. 10(19). 6 indexed citations
11.
Kozawa, Daichi, Xiaojian Wu, Akihiro Ishii, et al.. (2022). Formation of organic color centers in air-suspended carbon nanotubes using vapor-phase reaction. Nature Communications. 13(1). 2814–2814. 10 indexed citations
12.
Kosugi, M., Keigo Otsuka, Shaoqing Du, et al.. (2022). Electrical hysteresis characteristics in photogenerated currents on laser-beam-derived in-plane lateral 1D MoS2-Schottky junctions. AIP Advances. 12(10). 1 indexed citations
13.
Otsuka, Keigo, et al.. (2021). Deterministic transfer of optical-quality carbon nanotubes for atomically defined technology. Nature Communications. 12(1). 3138–3138. 23 indexed citations
14.
Inoue, Taiki, Shun Yamamoto, Keigo Otsuka, et al.. (2019). Regrowth and catalytic etching of individual single-walled carbon nanotubes studied by isotope labeling and growth interruption. Carbon. 155. 635–642. 11 indexed citations
15.
Delacou, Clément, Il Jeon, Keigo Otsuka, et al.. (2019). Investigation of charge interaction between fullerene derivatives and single‐walled carbon nanotubes. InfoMat. 1(4). 559–570. 23 indexed citations
16.
An, Hua, Akihito Kumamoto, Rong Xiang, et al.. (2019). Atomic-scale structural identification and evolution of Co-W-C ternary SWCNT catalytic nanoparticles: High-resolution STEM imaging on SiO 2. Science Advances. 5(5). eaat9459–eaat9459. 66 indexed citations
17.
Otsuka, Keigo, Shun Yamamoto, Taiki Inoue, et al.. (2018). Digital Isotope Coding to Trace the Growth Process of Individual Single-Walled Carbon Nanotubes. ACS Nano. 12(4). 3994–4001. 18 indexed citations
18.
Xiang, Rong, Yaerim Lee, Keigo Otsuka, et al.. (2018). Fabrication, characterization, and high temperature surface enhanced Raman spectroscopic performance of SiO2 coated silver particles. Nanoscale. 10(12). 5449–5456. 26 indexed citations
19.
20.
Otsuka, Keigo, et al.. (1984). . NIPPON KAGAKU KAISHI. 869–878. 7 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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