F. Kokai

4.5k total citations · 1 hit paper
93 papers, 3.7k citations indexed

About

F. Kokai is a scholar working on Materials Chemistry, Biomedical Engineering and Mechanics of Materials. According to data from OpenAlex, F. Kokai has authored 93 papers receiving a total of 3.7k indexed citations (citations by other indexed papers that have themselves been cited), including 79 papers in Materials Chemistry, 33 papers in Biomedical Engineering and 24 papers in Mechanics of Materials. Recurrent topics in F. Kokai's work include Diamond and Carbon-based Materials Research (44 papers), Carbon Nanotubes in Composites (39 papers) and Graphene research and applications (27 papers). F. Kokai is often cited by papers focused on Diamond and Carbon-based Materials Research (44 papers), Carbon Nanotubes in Composites (39 papers) and Graphene research and applications (27 papers). F. Kokai collaborates with scholars based in Japan, United States and France. F. Kokai's co-authors include Sumio Iijima, Masako Yudasaka, Kunimitsu Takahashi, Shunji Bandow, R. Yamada, Kazu Suenaga, D. Kasuya, Yasutoshi Koga, Katsuyuki Murata and Katsumi Kaneko and has published in prestigious journals such as The Journal of Chemical Physics, Nano Letters and Physical review. B, Condensed matter.

In The Last Decade

F. Kokai

93 papers receiving 3.6k citations

Hit Papers

Nano-aggregates of single-walled graphitic carbon nano-horns 1999 2026 2008 2017 1999 250 500 750
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Nano-aggregates of single-walled graphitic carbon nano-horns
    1999 939 citations Sumio Iijima, Masako Yudasaka et al. profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
F. Kokai Japan 29 2.8k 926 807 463 455 93 3.7k
Kunimitsu Takahashi Japan 26 2.7k 1.0× 924 1.0× 817 1.0× 466 1.0× 127 0.3× 55 3.5k
A. Ya. Vul’ Russia 35 4.2k 1.5× 1.1k 1.1× 760 0.9× 327 0.7× 537 1.2× 168 5.0k
E. Barborini Italy 30 1.7k 0.6× 455 0.5× 743 0.9× 237 0.5× 220 0.5× 90 2.7k
T. Ichihashi Japan 25 2.7k 0.9× 686 0.7× 702 0.9× 604 1.3× 78 0.2× 42 3.4k
Carlo S. Casari Italy 40 2.9k 1.0× 582 0.6× 1.5k 1.9× 604 1.3× 271 0.6× 148 4.6k
A. Ishitani Japan 33 2.8k 1.0× 572 0.6× 1.6k 2.0× 245 0.5× 845 1.9× 88 4.7k
G. Van Tendeloo Belgium 39 3.0k 1.0× 536 0.6× 706 0.9× 469 1.0× 122 0.3× 114 4.0k
Viera Skákalová Germany 37 3.9k 1.4× 1.2k 1.3× 1.6k 2.0× 213 0.5× 171 0.4× 103 5.1k
R. Larciprete Italy 37 3.7k 1.3× 930 1.0× 2.6k 3.2× 279 0.6× 174 0.4× 169 5.1k
Johannes Biskupek Germany 36 3.6k 1.3× 795 0.9× 1.8k 2.2× 407 0.9× 156 0.3× 158 5.3k

Countries citing papers authored by F. Kokai

Since Specialization
Citations

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

Fields of papers citing papers by F. Kokai

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of F. Kokai

This figure shows the co-authorship network connecting the top 25 collaborators of F. Kokai. A scholar is included among the top collaborators of F. Kokai 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 F. Kokai. F. Kokai 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.
Nishimura, Akira, et al.. (2019). Optimum reductants ratio for CO<sub>2</sub> reduction by overlapped Cu/TiO<sub>2</sub>. AIMS Materials Science. 6(2). 214–233. 3 indexed citations
2.
Nishimura, Akira, et al.. (2019). Optimum molar ratio of H<sub>2</sub> and H<sub>2</sub>O to reduce CO<sub>2</sub> using Pd/TiO<sub>2</sub>. AIMS Materials Science. 6(4). 464–483. 3 indexed citations
3.
4.
Kobayashi, Keita, et al.. (2013). Silicon-Catalyzed Growth of Amorphous SiOx Nanowires by Laser Vaporization of Si and Si/SiO2. The Journal of Physical Chemistry C. 117(47). 25169–25174. 7 indexed citations
5.
Kokai, F., et al.. (2012). Catalyst-free growth of amorphous silicon nanowires by laser ablation. Applied Physics A. 112(1). 1–7. 23 indexed citations
6.
Kokai, F., et al.. (2009). Structural characterization of single-wall carbon nanohorn aggregates hybridized with carbon nanocapsules and their formation mechanism. Applied Surface Science. 255(24). 9622–9625. 3 indexed citations
7.
Tanaka, Hideki, Jin Miyawaki, Katsumi Kaneko, et al.. (2002). Comparative study on physical adsorption of vapor and supercritical H 2 and CH 4 on SWNH and ACF. Molecular Crystals and Liquid Crystals. 388(1). 429–435. 5 indexed citations
8.
Bonard, J.-M., Richard Gaál, Slaven Garaj, et al.. (2002). Field emission properties of carbon nanohorn films. Journal of Applied Physics. 91(12). 10107–10109. 42 indexed citations
9.
Zambano, A., Khalid Lafdi, Aldo Migone, et al.. (2002). Adsorbate binding energy and adsorption capacity of xenon on carbon nanohorns. Nanotechnology. 13(2). 201–204. 28 indexed citations
10.
Kokai, F., Kunimitsu Takahashi, D. Kasuya, Masako Yudasaka, & Sumio Iijima. (2002). Growth dynamics of single-wall carbon nanotubes and nanohorn aggregates by CO2 laser vaporization at room temperature. Applied Surface Science. 197-198. 650–655. 43 indexed citations
11.
Bandow, Shunji, F. Kokai, Kohki Takahashi, Masako Yudasaka, & Sumio Iijima. (2001). Unique magnetism observed in single-wall carbon nanohorns. Applied Physics A. 73(3). 281–285. 50 indexed citations
12.
Murata, Katsuyuki, Katsumi Kaneko, William A. Steele, et al.. (2001). Porosity Evaluation of Intrinsic Intraparticle Nanopores of Single Wall Carbon Nanohorn. Nano Letters. 1(4). 197–199. 52 indexed citations
13.
Kokai, F., Koji Takahashi, D. Kasuya, Masako Yudasaka, & Sumio Iijima. (2001). Growth of single-wall carbon nanotubes dependent on laser power density and ambient gas pressure during room-temperature CO2 laser vaporization. Applied Physics A. 73(4). 401–407. 12 indexed citations
14.
Kokai, F., Kunimitsu Takahashi, Masako Yudasaka, & Sumio Iijima. (2000). Synthesis of Single-Wall Carbon Nanotubes by Laser Vaporization and Its Dynamic Process.. The Review of Laser Engineering. 28(6). 342–347. 2 indexed citations
15.
Yamamoto, Kazuhiro, et al.. (1999). Carbon nitride thin films prepared by nitrogen ion assisted pulsed laser deposition of graphite using KrF excimer laser. Thin Solid Films. 339(1-2). 38–43. 29 indexed citations
16.
Kokai, F.. (1997). Optical Emission Spectra from Laser Ablation of Graphite at 266 nm and 1064 nm under a Magnetic Field. Japanese Journal of Applied Physics. 36(6R). 3504–3504. 18 indexed citations
17.
Kokai, F., Yasutoshi Koga, & Robert B. Heimann. (1996). Magnetic field enhanced growth of carbon cluster ions in the laser ablation plume of graphite. Applied Surface Science. 96-98. 261–266. 27 indexed citations
18.
Kokai, F., Y. Kakudate, Hideru Togashi, Yasutoshi Koga, & S. Fujiwara. (1995). XeCl-laser-generated ablation products from a nitrogen-rich polymer studied by laser-ionization mass spectrometry. Applied Physics A. 60(1). 31–34. 2 indexed citations
19.
Kokai, F., Masafumi Taniwaki, Yasutoshi Koga, et al.. (1995). Laser ionization time-of-flight mass spectrometric study on laser ablation of a graphite-like material of (BC2N)ncomposition. Journal of Applied Physics. 77(5). 2220–2222. 1 indexed citations
20.
Kokai, F., et al.. (1992). XeCl laser ablation of yttria stabilized zirconia. Applied Physics A. 54(4). 340–342. 17 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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