Koichi Niihara

23.6k total citations · 5 hit papers
605 papers, 19.3k citations indexed

About

Koichi Niihara is a scholar working on Ceramics and Composites, Materials Chemistry and Mechanical Engineering. According to data from OpenAlex, Koichi Niihara has authored 605 papers receiving a total of 19.3k indexed citations (citations by other indexed papers that have themselves been cited), including 321 papers in Ceramics and Composites, 315 papers in Materials Chemistry and 282 papers in Mechanical Engineering. Recurrent topics in Koichi Niihara's work include Advanced ceramic materials synthesis (319 papers), Advanced materials and composites (164 papers) and Aluminum Alloys Composites Properties (150 papers). Koichi Niihara is often cited by papers focused on Advanced ceramic materials synthesis (319 papers), Advanced materials and composites (164 papers) and Aluminum Alloys Composites Properties (150 papers). Koichi Niihara collaborates with scholars based in Japan, South Korea and United States. Koichi Niihara's co-authors include Tohru Sekino, D. P. H. Hasselman, R. Morena, Tomoko Kasuga, Masayoshi Hiramatsu, Atsushi Nakahira, Tadachika Nakayama, Yong‐Ho Choa, Katsuaki Suganuma and Toshio Hirai and has published in prestigious journals such as Nature, Advanced Materials and SHILAP Revista de lepidopterología.

In The Last Decade

Koichi Niihara

586 papers receiving 18.7k citations

Hit Papers

5 papers align trajectories

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.

Formation of Titanium Oxide Nanotube

1998 2.2k citations Tohru Sekino, Koichi Niihara et al. profile →
Evaluation ofK Ic of brittle solids by the indentation method with low crack-to-indent ratios

1982 1.6k citations Koichi Niihara et al. profile →
Titania Nanotubes Prepared by Chemical Processing

1999 1.4k citations Tohru Sekino, Koichi Niihara et al. profile →
New Design Concept of Structural Ceramics

1991 1.1k citations Koichi Niihara profile →
A fracture mechanics analysis of indentation-induced Palmqvist crack in ceramics

1983 655 citations Koichi Niihara profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Koichi Niihara Japan	60	10.4k	8.5k	8.1k	3.5k	2.8k	605	19.3k
Yoshio Sakka Japan	67	14.3k 1.4×	7.3k 0.9×	6.4k 0.8×	6.0k 1.7×	2.5k 0.9×	715	21.7k
Ralf Riedel Germany	77	14.0k 1.4×	11.2k 1.3×	6.9k 0.9×	6.4k 1.8×	1.2k 0.4×	588	23.9k
Xinghong Zhang China	61	7.6k 0.7×	6.1k 0.7×	6.7k 0.8×	2.6k 0.8×	2.4k 0.8×	333	15.1k
Yanchun Zhou China	78	18.6k 1.8×	8.7k 1.0×	11.8k 1.5×	3.2k 0.9×	989 0.3×	486	22.6k
Fritz Aldinger Germany	68	11.1k 1.1×	7.1k 0.8×	6.0k 0.7×	3.1k 0.9×	743 0.3×	504	16.5k
Xuanhui Qu China	74	10.0k 1.0×	3.1k 0.4×	10.4k 1.3×	7.8k 2.2×	2.2k 0.8×	942	23.4k
Wei Pan China	62	10.2k 1.0×	3.0k 0.4×	3.0k 0.4×	4.1k 1.2×	1.4k 0.5×	518	15.2k
C. Suryanarayana United States	51	10.3k 1.0×	3.3k 0.4×	13.5k 1.7×	1.7k 0.5×	420 0.1×	298	18.8k
Gary L. Messing United States	65	9.8k 0.9×	5.6k 0.7×	3.2k 0.4×	5.4k 1.6×	502 0.2×	277	14.6k
Tohru Sekino Japan	45	6.3k 0.6×	2.2k 0.3×	2.4k 0.3×	2.4k 0.7×	4.0k 1.4×	402	11.0k

Countries citing papers authored by Koichi Niihara

Since Specialization

Citations

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

Fields of papers citing papers by Koichi Niihara

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koichi Niihara

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Saito, Hiroyuki, et al.. (2025). Monitoring BaTiO ₃ sintering using nanosecond pulsed electric field. SHILAP Revista de lepidopterología. 5(1).

Shen, Zhiming, et al.. (2024). Single-layer iron network microstructure magnetorheological elastomer for transparent soft actuator. Chemical Engineering Journal. 500. 157167–157167. 2 indexed citations

Saito, Hiroyuki, et al.. (2024). New Developments in Powder and Powder Metallurgy Processes Using Nanosecond Pulsed Electric Fields. Journal of the Japan Society of Powder and Powder Metallurgy. 71(9). 355–360. 2 indexed citations

Nguyen, Son Thanh, et al.. (2024). Self-healing ability and full strength recovery at medium temperatures of low content titanium carbide/alumina composites. Journal of the Ceramic Society of Japan. 132(3). 85–92.

Wiff, Juan Paulo, Juyoung Kim, Tsuneo Suzuki, et al.. (2023). Enhancing low-grade waste heat recovery by lead-free ferroelectric Ba(Zr0.1Ti0.9)O3 with Sr and Ca isovalent dopants. Ceramics International. 49(10). 16290–16296. 2 indexed citations

Wiff, Juan Paulo, Juyoung Kim, Tsuneo Suzuki, et al.. (2022). Enhancing low‐temperature energy harvesting by lead‐free ferroelectric Ba(Zr _0.1 Ti _0.9 )O ₃. Journal of the American Ceramic Society. 106(1). 201–212. 9 indexed citations

Shen, Zhiming, Anak Khantachawana, María Jesús Elejabarrieta, et al.. (2022). Analyzing the influence of the core pre-structure on the dynamic response of a magnetorheological elastomer sandwich structure. Smart Materials and Structures. 31(7). 75027–75027. 7 indexed citations

Wiff, Juan Paulo, Juyoung Kim, Tsuneo Suzuki, et al.. (2021). Sensitivity and effectivity of Kim’s novel electro-thermodynamic cycle over Olsen cycle on waste heat recovering with high fluctuating temperature source using lead-free pyroelectric Ba(Zr0.1Ti0.9)O3. AIP Advances. 11(12). 3 indexed citations

Nguyen, Son Thanh, Tadachika Nakayama, Hideki Hashimoto, et al.. (2021). Titanium Nitride and Yttrium Titanate Nanocomposites, Endowed with Renewable Self‐Healing Ability. Advanced Materials Interfaces. 8(22). 5 indexed citations

10.

Nguyen, Son Thanh, et al.. (2020). Recycling of a Healing Agent by a Water‐Vapor Treatment to Enhance the Self‐Repair Ability of Ytterbium Silicate‐Based Nanocomposite in Multiple Crack‐Healing Test. Advanced Engineering Materials. 22(7). 7 indexed citations

11.

Suematsu, Hisayuki, et al.. (2017). Preparation of Mg Submicron Particles by Pulsed Wire Discharge. Journal of the Society of Powder Technology Japan. 54(8). 514–518. 4 indexed citations

12.

Suematsu, Hisayuki, Yoshinori Tokoi, Tsuneo Suzuki, Tadachika Nakayama, & Koichi Niihara. (2015). Development of Pulsed Wire Discharge for Production of Nanosized Powders. Journal of Plasma and Fusion Research. 91(4). 245–250. 1 indexed citations

13.

Suzuki, Tsuneo, et al.. (2011). Preparation and Characterization of Cr–Zn–N–O Thin Films Deposited by Pulsed Laser Deposition. Japanese Journal of Applied Physics. 50(1S2). 01BE18–01BE18.

14.

Kim, Bum Sung, et al.. (2003). Pulse electric current sintering of alumina/nickel nanocomposites. Materials Research Innovations. 7(2). 57–61. 9 indexed citations

15.

Choa, Yong‐Ho, Tadachika Nakayama, Tohru Sekino, & Koichi Niihara. (1999). Fabrication of Nano-sized Metal Dispersed Magnesia Based Composites and Related Mechanical and Magnetic Properties. 5(4). 395–399. 1 indexed citations

16.

Nakayama, Tadachika, et al.. (1999). Microstructure, Mechanical and Wear Properties of Hot-pressed Si₃N₄-TiC Composites. 5(4). 317–323. 1 indexed citations

17.

Towata, Atsuya, Hae Jin Hwang, Masaki Yasuoka, Mutsuo Sando, & Koichi Niihara. (1999). FABRICATION OF POLYCRYSTALLINE ALUMINA/YAG COMPOSITE FIBERS BY SOL-GEL PROCESS USING α-ALUMINA FINE SEED PARTICLES(Special Issue on Recent Advances of Composites in Asia and Australasia). 5(3). 169–174. 2 indexed citations

18.

Suzuki, Yoshikazu, Peter E. D. Morgan, & Koichi Niihara. (1998). Use of a high X-ray flux instrument for a mineral: X-ray powder diffraction pattern of CaMg ( CO ₃ ) ₂. Powder Diffraction. 13(4). 216–221. 12 indexed citations

19.

Nakahira, Atsushi, et al.. (1990). Study on Characteristic Structure and Strength of SiC by Heat-Treatment at Atmospheric Condition. TANSO. 1990(141). 11–16. 1 indexed citations

20.

Hirai, Toshio, Koichi Niihara, Shinsuke Hayashi, & Takashi Goto. (1976). Chemical Vapor-Deposited Amorphous Silicon Nitride. Science Reports of the Research Institutes, Tohoku University, Series A: Physics, Chemistry, and Metallurgy. 26. 185–201. 3 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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