Koji Yamada

15.6k total citations · 2 hit papers
679 papers, 11.5k citations indexed

About

Koji Yamada is a scholar working on Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics and Materials Chemistry. According to data from OpenAlex, Koji Yamada has authored 679 papers receiving a total of 11.5k indexed citations (citations by other indexed papers that have themselves been cited), including 331 papers in Electrical and Electronic Engineering, 193 papers in Atomic and Molecular Physics, and Optics and 189 papers in Materials Chemistry. Recurrent topics in Koji Yamada's work include Photonic and Optical Devices (214 papers), Solid-state spectroscopy and crystallography (89 papers) and Optical Network Technologies (78 papers). Koji Yamada is often cited by papers focused on Photonic and Optical Devices (214 papers), Solid-state spectroscopy and crystallography (89 papers) and Optical Network Technologies (78 papers). Koji Yamada collaborates with scholars based in Japan, United States and Germany. Koji Yamada's co-authors include Tai Tsuchizawa, Hiroshi Fukuda, Toshifumi Watanabe, Sei-ichi Itabashi, Tsutomu Okuda, Tetsufumi Shoji, Akihiko Shinya, Masaya Notomi, I. Yokohama and Chiharu Takahashi and has published in prestigious journals such as Physical Review Letters, Angewandte Chemie International Edition and Nature Communications.

In The Last Decade

Koji Yamada

623 papers receiving 11.0k citations

Hit Papers

align trajectories sort by overperformance

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.

Extremely Large Group-Velocity Dispersion of Line-Defect Waveguides in Photonic Crystal Slabs

2001 755 citations Koji Yamada et al. profile →
Microphotonics devices based on silicon microfabrication technology

2005 525 citations Tai Tsuchizawa, Koji Yamada et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Koji Yamada Japan	49	7.6k	4.3k	3.4k	1.1k	1.1k	679	11.5k
Kohei Uosaki Japan	63	9.1k 1.2×	2.9k 0.7×	5.5k 1.6×	838 0.8×	2.2k 2.1×	571	15.5k
Bo Peng China	54	5.7k 0.8×	5.6k 1.3×	4.7k 1.4×	1.2k 1.1×	1.7k 1.6×	341	12.7k
Jing Feng China	59	7.6k 1.0×	1.9k 0.4×	4.1k 1.2×	2.0k 1.8×	3.5k 3.3×	522	11.8k
Koichi Yamashita Japan	47	4.1k 0.5×	2.8k 0.6×	4.5k 1.3×	977 0.9×	472 0.4×	380	10.2k
G. Andrew D. Briggs United Kingdom	53	2.4k 0.3×	3.4k 0.8×	4.6k 1.4×	283 0.3×	1.6k 1.5×	230	8.8k
Petr Král United States	53	2.1k 0.3×	1.8k 0.4×	5.1k 1.5×	354 0.3×	2.8k 2.6×	191	10.8k
Thomas Lippert Switzerland	54	3.1k 0.4×	1.0k 0.2×	3.8k 1.1×	501 0.5×	2.7k 2.5×	453	12.3k
Yan Xia China	36	4.0k 0.5×	4.9k 1.1×	5.6k 1.6×	843 0.8×	2.5k 2.4×	416	13.2k
Handong Sun Singapore	71	10.2k 1.3×	4.1k 1.0×	10.5k 3.1×	790 0.7×	2.9k 2.7×	390	17.6k
Saroj K. Nayak United States	49	2.6k 0.3×	1.9k 0.4×	4.5k 1.3×	450 0.4×	1.1k 1.1×	157	7.5k

Countries citing papers authored by Koji Yamada

Since Specialization

Citations

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

Fields of papers citing papers by Koji Yamada

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koji Yamada

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

All Works

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20 of 20 papers shown

Yano, Keisuke, Mitsuru Muto, Koshiro Sugita, et al.. (2024). Prognostic factors for pediatric patients with severe intestinal motility disorders: a single institution’s experience. Surgery Today. 55(3). 380–385.

Cong, Guangwei, Ryotaro Konoike, Keijiro Suzuki, et al.. (2024). Reinforced Q-Learning Enabled Automatic Blind Working Wavelength Alignment Against Wide Input-Wavelength Shifts and Temperature Variations for Silicon Photonic Vernier Ring Filters. Th1A.4–Th1A.4.

Yamada, Koji, et al.. (2023). Pilot–scale Demonstration of Coagulation Direct Membrane Filtration of Algae–rich Water with Dead–end Filtration Method. MEMBRANE. 48(3). 145–152. 1 indexed citations

Cong, Guangwei, Noritsugu Yamamoto, Takashi Inoue, et al.. (2022). On-chip bacterial foraging training in silicon photonic circuits for projection-enabled nonlinear classification. Nature Communications. 13(1). 3261–3261. 24 indexed citations

Yamada, Koji, et al.. (2011). Study of sensor structure for measurement of magnetization characteristics in high pulsed fields. PRZEGLĄD ELEKTROTECHNICZNY. 69–72. 1 indexed citations

Baba, Toshihiko & Koji Yamada. (2010). Progress in silicon photonics and recent activities in Asia. 10–13. 1 indexed citations

Mori, Takeshi, et al.. (2009). EFFECT OF FINISHING ON FATIGUE STRENGTH OF WEB-GUSSET WELDED JOINTS. IEEE Journal of Solid-State Circuits. 16(61).

Yamada, Koji, et al.. (2007). APPLICATION OF NUMERICAL ANALYSIS TO RESISTANT FORCE CHARACTERISTIC OF WOODEN FRAMES WITH MUD PLASTER HANGING WALLS. Journal of Structural and Construction Engineering (Transactions of AIJ). 72(621). 81–87. 1 indexed citations

Yamada, Koji. (2007). GENERATION METHOD OF THE VULNERABILITY CURVE FOR A TRADITIONAL TIMBER HOUSE IN CONSIDERATION OF THE MAXIMUM BEARING FORCE DISTRIBUTION. Journal of Structural and Construction Engineering (Transactions of AIJ). 72(621). 97–102.

10.

Suzuki, Yoshiyuki, et al.. (2007). STATIC CYCLIC LOADING TEST FOR EVALUATION OF SEISMIC CAPACITY OF TRADITIONAL HOUSE IN HIGASHI-MIKAWA. Journal of Structural and Construction Engineering (Transactions of AIJ). 72(612). 133–140. 3 indexed citations

11.

Yamada, Koji. (2006). INFLUENCE OF THE MAXIMUM BEARING FORCE DISTRIBUTION TO THE ULTIMATE HORIZONTAL LOAD AND MAXIMUM DISPLACEMENT RESPONSE OF TRADITIONAL TIMBER HOUSES. Journal of Structural and Construction Engineering (Transactions of AIJ). 71(599). 111–117.

12.

Yamada, Koji, Tai Tsuchizawa, Toshifumi Watanabe, et al.. (2004). Microphotonics Devices Based on Silicon Wire Waveguiding System. IEICE Transactions on Electronics. 351–358. 27 indexed citations

13.

Tanaka, Yoshiharu, et al.. (2002). Selective Separation of Germanium(IV) by Di(2-hydroxyethyl)amine-type Cellulose Derivative. 17. 13 indexed citations

14.

Yamada, Koji. (2001). RELATION BETWEEN THE WALL-LENGTH RATIO OF JAPANESE WOODEN HOUSES AND THE ULTIMATE HORIZONTAL RESISTANT FORCE CONSIDERING THE STIFFNESS OF BOTH FLOOR AND NON-STRUCTURAL WALLS. Journal of Structural and Construction Engineering (Transactions of AIJ). 66(547). 113–119.

15.

Yamada, Koji, et al.. (2001). Generation of Artistic Calligraphic Fonts Considering Character Structure. Forma. 16(4). 357–366. 1 indexed citations

16.

Sakamoto, Shinichi, et al.. (2001). Study on Influences of Heat Input and Inter-pass Temperature on the Mechanical Properties and the Execution Efficiency of Weld Joints in Steel Structures. IEEE Journal of Solid-State Circuits. 8(31). 1–10. 2 indexed citations

17.

Yamada, Koji. (2000). RELATION AMONG THE AMOUNT OF NON-STRUCTURAL WALLS OF WOODEN-FRAMED HOUSES THEIR CALCULATED NATURAL PERIOD AND THE MAXIMUM DISPLACEMENT OF THEIR SEISMIC RESPONSE. Journal of Structural and Construction Engineering (Transactions of AIJ). 65(536). 109–114.

18.

Yamada, Koji. (1999). STUDY ON THE EVALUATION OF EARTHQUAKE RESISTANT CAPACITY OF TRADITIONAL TIMBER HOUSES IN CONSIDERATION OF THE FLOOR STIFFNESS AND GRID LINES OF BEARING WALLS. Journal of Structural and Construction Engineering (Transactions of AIJ). 64(525). 79–84. 6 indexed citations

19.

Matsuoka, Osamu, et al.. (1997). THREE-DIMENSIONAL FINITE DEFORMATION ANALYSIS OF A CYLINDRICAL SHELL SUBJECTED TO PURE BENDING USING TORUS COORDINATES. Journal of Structural and Construction Engineering (Transactions of AIJ). 62(498). 83–90. 1 indexed citations

20.

Yamada, Koji, et al.. (1995). THEORETICAL THREE-DIMENSIONAL ANALYSIS OF FINITE DEFORMATION OF A CLOSED CIRCULAR CYLINDRICAL SHELL SUBJECTED TO PURE BENDING. Journal of Structural and Construction Engineering (Transactions of AIJ). 60(468). 81–89. 2 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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