Self-Organization of Amorphous Carbon Nanocapsules into Diamond Nanocrystals Driven by Self-Nanoscopic Excessive Pressure under Moderate Electron Irradiation without External Heating | |
Department | 固体润滑国家重点实验室 |
Wang, Chengbing1; Ling, San1; Yang, Jin2; Rao, Dewei2; Guo ZG(郭志光)3; Guo ZG(郭志光) | |
2018 | |
Source Publication | Small |
ISSN | 1613-6810 |
Volume | 14Issue:1Pages:1702072(1-8) |
Abstract | Phase transformation between carbon allotropes usually requires high pressures and high temperatures. Thus, the development of low‐temperature phase transition approaches between carbon allotropes is highly desired. Herein, novel amorphous carbon nanocapsules are successfully synthesized by pulsed plasma glow discharge. These nanocapsules are comprised of highly strained carbon clusters encapsulated in a fullerene‐like carbon matrix, with the formers serving as nucleation sites. These nucleation sites favored the formation of a diamond unit cell driven by the self‐nanoscopic local excessive pressure, thereby significantly decreasing the temperature required for its transformation into a diamond nanocrystal. Under moderate electron beam irradiation (10–20 A cm−2) without external heating, self‐organization of the energetic carbon clusters into diamond nanocrystals is achieved, whereas the surrounding fullerene‐like carbon matrix remains nearly unchanged. Molecular dynamics simulations demonstrate that the defective rings as the active sites dominate the phase transition of amorphous carbon to diamond nanocrystal. The findings may open a promising route to realize phase transformation between carbon allotropes at a lower temperature. |
Keyword | Carbon Nanocapsules Diamond Nanocrystals Electron Irradiation Nanoscopic Pressure Self-organization |
Subject Area | 材料科学与物理化学 |
DOI | 10.1002/smll.201702072 |
Funding Organization | the National Natural Science Foundation of China (Grant Nos. 51575253;51562020;51365026);Natural Science Foundation of Jiangsu Province (Grant No. BK20140526) |
Indexed By | SCI |
Language | 英语 |
Funding Project | 空间润滑材料研究组 |
compositor | 第三作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/22958 |
Collection | 固体润滑国家重点实验室(LSL) |
Corresponding Author | Rao, Dewei; Guo ZG(郭志光) |
Affiliation | 1.Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Xian 710021, Shaanxi, Peoples R China 2.Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Peoples R China 3.Chinese Acad Sci, State Key Lab Solid Lubricat, Lanzhou Inst Chem Phys, Lanzhou 730000, Gansu, Peoples R China |
Recommended Citation GB/T 7714 | Wang, Chengbing,Ling, San,Yang, Jin,et al. Self-Organization of Amorphous Carbon Nanocapsules into Diamond Nanocrystals Driven by Self-Nanoscopic Excessive Pressure under Moderate Electron Irradiation without External Heating[J]. Small,2018,14(1):1702072(1-8). |
APA | Wang, Chengbing,Ling, San,Yang, Jin,Rao, Dewei,Guo ZG,&郭志光.(2018).Self-Organization of Amorphous Carbon Nanocapsules into Diamond Nanocrystals Driven by Self-Nanoscopic Excessive Pressure under Moderate Electron Irradiation without External Heating.Small,14(1),1702072(1-8). |
MLA | Wang, Chengbing,et al."Self-Organization of Amorphous Carbon Nanocapsules into Diamond Nanocrystals Driven by Self-Nanoscopic Excessive Pressure under Moderate Electron Irradiation without External Heating".Small 14.1(2018):1702072(1-8). |
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