Ryoma Hayakawa

2.3k total citations
104 papers, 2.0k citations indexed

About

Ryoma Hayakawa is a scholar working on Electrical and Electronic Engineering, Materials Chemistry and Biomedical Engineering. According to data from OpenAlex, Ryoma Hayakawa has authored 104 papers receiving a total of 2.0k indexed citations (citations by other indexed papers that have themselves been cited), including 88 papers in Electrical and Electronic Engineering, 41 papers in Materials Chemistry and 22 papers in Biomedical Engineering. Recurrent topics in Ryoma Hayakawa's work include Organic Electronics and Photovoltaics (41 papers), Molecular Junctions and Nanostructures (29 papers) and Advanced Memory and Neural Computing (25 papers). Ryoma Hayakawa is often cited by papers focused on Organic Electronics and Photovoltaics (41 papers), Molecular Junctions and Nanostructures (29 papers) and Advanced Memory and Neural Computing (25 papers). Ryoma Hayakawa collaborates with scholars based in Japan, France and Germany. Ryoma Hayakawa's co-authors include Yutaka Wakayama, Toyohiro Chikyow, Kenji Higashiguchi, Kenji Matsuda, Yasushi Ishiguro, Matthieu Petit, Debdatta Panigrahi, Nobuya Hiroshiba, Shu Nakaharai and Elke Scheer and has published in prestigious journals such as Advanced Materials, The Journal of Chemical Physics and SHILAP Revista de lepidopterología.

In The Last Decade

Ryoma Hayakawa

102 papers receiving 2.0k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ryoma Hayakawa Japan 26 1.5k 949 347 291 247 104 2.0k
S. Lenfant France 23 1.6k 1.1× 695 0.7× 355 1.0× 542 1.9× 197 0.8× 72 2.1k
P. Normand Greece 26 1.8k 1.2× 1.2k 1.3× 209 0.6× 550 1.9× 152 0.6× 126 2.3k
Christina A. Hacker United States 27 1.7k 1.1× 1.2k 1.3× 202 0.6× 637 2.2× 127 0.5× 63 2.4k
Martin Weis Slovakia 25 1.5k 1.0× 331 0.3× 466 1.3× 402 1.4× 85 0.3× 177 2.0k
Raffaella Capelli Italy 21 1.4k 0.9× 670 0.7× 635 1.8× 256 0.9× 89 0.4× 58 2.0k
Kosmas Galatsis United States 18 936 0.6× 800 0.8× 270 0.8× 429 1.5× 79 0.3× 33 1.6k
Bin‐Bin Cui China 24 1.5k 1.0× 980 1.0× 684 2.0× 150 0.5× 97 0.4× 63 2.0k
S. Maikap Taiwan 32 2.9k 1.9× 1.0k 1.1× 525 1.5× 271 0.9× 526 2.1× 169 3.1k
Jean‐Philippe Bourgoin France 22 834 0.5× 907 1.0× 152 0.4× 373 1.3× 81 0.3× 51 1.8k
Guangyu Zhang China 17 1.4k 0.9× 1.2k 1.3× 81 0.2× 435 1.5× 115 0.5× 42 2.1k

Countries citing papers authored by Ryoma Hayakawa

Since Specialization
Citations

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

Fields of papers citing papers by Ryoma Hayakawa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryoma Hayakawa

This figure shows the co-authorship network connecting the top 25 collaborators of Ryoma Hayakawa. A scholar is included among the top collaborators of Ryoma Hayakawa 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 Ryoma Hayakawa. Ryoma Hayakawa 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.
Hayakawa, Ryoma, et al.. (2025). Reconfigurable artificial synapses with an organic antiambipolar transistor for brain-inspired computing. Journal of Materials Chemistry C. 13(28). 14234–14241.
2.
Hayakawa, Ryoma, et al.. (2024). Mechanism of charge accumulation in potassium poly(heptazine imide). Physical Chemistry Chemical Physics. 26(30). 20585–20597. 7 indexed citations
3.
Hayakawa, Ryoma, et al.. (2024). Nanoporous Dna Field Effect Transistor with Potential for Random‐Access Memory Applications: A Selectivity Performance Evaluation. SHILAP Revista de lepidopterología. 3(5). 2 indexed citations
4.
Yoo, Hocheon, Ryoma Hayakawa, Yutaka Wakayama, & Chang‐Hyun Kim. (2024). Simulation and Modeling of Emerging Heterojunction Transistors: Toward Rational Design and Optimization. 3(11). 492–501. 1 indexed citations
5.
Panigrahi, Debdatta, Ryoma Hayakawa, Yutaka Wakayama, et al.. (2024). Ambipolar charge-trapping in self-assembled nanostructures of a supramolecular miktoarm star-shaped copolymer with a zinc phthalocyanine core. Journal of Materials Chemistry C. 12(26). 9642–9651. 2 indexed citations
6.
Panigrahi, Debdatta, Ryoma Hayakawa, & Yutaka Wakayama. (2023). Antiambipolar Transistor with Double Negative Differential Transconductances for Organic Quaternary Logic Circuits. Advanced Functional Materials. 33(20). 22 indexed citations
7.
Panigrahi, Debdatta, Ryoma Hayakawa, Junko Aimi, & Yutaka Wakayama. (2023). Performance Enhancement of Organic Ternary Logic Circuits through UV Irradiation and Geometry Optimization. Advanced Materials Technologies. 8(22). 4 indexed citations
8.
Shingaya, Yoshitaka, Takuya Iwasaki, Ryoma Hayakawa, et al.. (2022). Dual‐Gate Anti‐Ambipolar Transistor with Van der Waals ReS2/WSe2 Heterojunction for Reconfigurable Logic Operations. Advanced Electronic Materials. 9(1). 29 indexed citations
9.
Mukherjee, Bablu, et al.. (2020). Gate-bias tunable humidity sensors based on rhenium disulfide field-effect transistors. Japanese Journal of Applied Physics. 60(SB). SBBH01–SBBH01. 6 indexed citations
10.
Hiroshiba, Nobuya, Ryoma Hayakawa, & Yutaka Wakayama. (2019). On-terrace graphoepitaxy for remarkable one-dimensional growth of 2,7-dioctyl[1]benzothieno[3,2-b]benzothiophene (C8-BTBT) nanowires. Organic Electronics. 74. 33–36. 6 indexed citations
11.
Hayakawa, Ryoma, et al.. (2019). Stable operation of water-gated organic field-effect transistor depending on channel flatness, electrode metals and surface treatment. Japanese Journal of Applied Physics. 58(SD). SDDH02–SDDH02. 8 indexed citations
12.
Mukherjee, Bablu, et al.. (2019). Enhanced Quantum Efficiency in Vertical Mixed-Thickness n-ReS2/p-Si Heterojunction Photodiodes. ACS Photonics. 6(9). 2277–2286. 27 indexed citations
13.
Nagata, Takahiro, Ryoma Hayakawa, Takeshi Yoshimura, et al.. (2017). Photoelectron spectroscopic study on monolayer pentacene thin-film/polar ZnO single-crystal hybrid interface. Applied Physics Express. 10(2). 25702–25702. 5 indexed citations
14.
Tsuruoka, Tohru, et al.. (2016). Laser Patterning of Optically Reconfigurable Transistor Channels in a Photochromic Diarylethene Layer. Nano Letters. 16(12). 7474–7480. 36 indexed citations
15.
Hayakawa, Ryoma, et al.. (2016). Large Magnetoresistance in Single-Radical Molecular Junctions. Nano Letters. 16(8). 4960–4967. 83 indexed citations
16.
Karimi, Mohammad Ali, Safa Golrokh Bahoosh, Markus Herz, et al.. (2016). Shot Noise of 1,4-Benzenedithiol Single-Molecule Junctions. Nano Letters. 16(3). 1803–1807. 39 indexed citations
17.
Oh, Seungjun, Ryoma Hayakawa, Toyohiro Chikyow, & Yutaka Wakayama. (2015). Nanochannel effect in polymer nanowire transistor with highly aligned polymer chains. Applied Physics Letters. 106(24). 9 indexed citations
18.
19.
Wakayama, Yutaka, Ryoma Hayakawa, Toyohiro Chikyow, et al.. (2008). Self-Assembled Molecular Nanowires of 6,13-Bis(methylthio)pentacene: Growth, Electrical Properties, and Applications. Nano Letters. 8(10). 3273–3277. 31 indexed citations
20.
Hayakawa, Ryoma, et al.. (2004). Formation of Silicon Oxynitride Films with Low Leakage Current Using N2/O2Plasma near Atmospheric Pressure. Japanese Journal of Applied Physics. 43(11B). 7853–7856. 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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