Enhancement of short/medium-range order and thermal conductivity in ultrahard sp3 amorphous carbon by C70 precursor

Yuchen Shang, Mingguang Yao (), Zhaodong Liu, Rong Fu, Longbiao Yan, Long Yang, Zhongyin Zhang, Jiajun Dong, Chunguang Zhai, Xuyuan Hou, Liting Fei, GuanJie Zhang, Jianfeng Ji, Jie Zhu, He Lin, Bertil Sundqvist and Bingbing Liu ()
Additional contact information
Yuchen Shang: Jilin University
Mingguang Yao: Jilin University
Zhaodong Liu: Jilin University
Rong Fu: Shanghai University
Longbiao Yan: Chinese Academy of Sciences
Long Yang: Tongji University
Zhongyin Zhang: Dalian University of Technology
Jiajun Dong: Jilin University
Chunguang Zhai: Jilin University
Xuyuan Hou: Jilin University
Liting Fei: Chinese Academy of Sciences
GuanJie Zhang: Chinese Academy of Sciences
Jianfeng Ji: Chinese Academy of Sciences
Jie Zhu: Dalian University of Technology
He Lin: Chinese Academy of Sciences
Bertil Sundqvist: Umeå University
Bingbing Liu: Jilin University

Nature Communications, 2023, vol. 14, issue 1, 1-9

Abstract: Abstract As an advanced amorphous material, sp3 amorphous carbon exhibits exceptional mechanical, thermal and optical properties, but it cannot be synthesized by using traditional processes such as fast cooling liquid carbon and an efficient strategy to tune its structure and properties is thus lacking. Here we show that the structures and physical properties of sp3 amorphous carbon can be modified by changing the concentration of carbon pentagons and hexagons in the fullerene precursor from the topological transition point of view. A highly transparent, nearly pure sp3−hybridized bulk amorphous carbon, which inherits more hexagonal-diamond structural feature, was synthesized from C70 at high pressure and high temperature. This amorphous carbon shows more hexagonal-diamond-like clusters, stronger short/medium-range structural order, and significantly enhanced thermal conductivity (36.3 ± 2.2 W m−1 K−1) and higher hardness (109.8 ± 5.6 GPa) compared to that synthesized from C60. Our work thus provides a valid strategy to modify the microstructure of amorphous solids for desirable properties.

Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-023-42195-5 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-42195-5

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-023-42195-5

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().