中文版 | English
题名

Synthesis and properties of free-standing monolayer amorphous carbon

作者
通讯作者Özyilmaz,Barbaros
发表日期
2020-01-09
DOI
发表期刊
ISSN
0028-0836
EISSN
1476-4687
卷号577期号:7789页码:199-203
摘要
Bulk amorphous materials have been studied extensively and are widely used, yet their atomic arrangement remains an open issue. Although they are generally believed to be Zachariasen continuous random networks, recent experimental evidence favours the competing crystallite model in the case of amorphous silicon. In two-dimensional materials, however, the corresponding questions remain unanswered. Here we report the synthesis, by laser-assisted chemical vapour deposition, of centimetre-scale, free-standing, continuous and stable monolayer amorphous carbon, topologically distinct from disordered graphene. Unlike in bulk materials, the structure of monolayer amorphous carbon can be determined by atomic-resolution imaging. Extensive characterization by Raman and X-ray spectroscopy and transmission electron microscopy reveals the complete absence of long-range periodicity and a threefold-coordinated structure with a wide distribution of bond lengths, bond angles, and five-, six-, seven- and eight-member rings. The ring distribution is not a Zachariasen continuous random network, but resembles the competing (nano)crystallite model. We construct a corresponding model that enables density-functional-theory calculations of the properties of monolayer amorphous carbon, in accordance with observations. Direct measurements confirm that it is insulating, with resistivity values similar to those of boron nitride grown by chemical vapour deposition. Free-standing monolayer amorphous carbon is surprisingly stable and deforms to a high breaking strength, without crack propagation from the point of fracture. The excellent physical properties of this stable, free-standing monolayer amorphous carbon could prove useful for permeation and diffusion barriers in applications such as magnetic recording devices and flexible electronics.
相关链接[Scopus记录]
收录类别
语种
英语
重要成果
NI期刊 ; NI论文 ; ESI高被引
学校署名
其他
资助项目
JSPS KAKENHI[JP16H06333] ; JSPS KAKENHI[P16823]
WOS研究方向
Science & Technology - Other Topics
WOS类目
Multidisciplinary Sciences
WOS记录号
WOS:000506682500035
出版者
ESI学科分类
BIOLOGY & BIOCHEMISTRY;CLINICAL MEDICINE;MULTIDISCIPLINARY;PLANT & ANIMAL SCIENCE;ENVIRONMENT/ECOLOGY;SOCIAL SCIENCES, GENERAL;MICROBIOLOGY;ECONOMICS BUSINESS;IMMUNOLOGY;MATERIALS SCIENCE;COMPUTER SCIENCE;SPACE SCIENCE;MOLECULAR BIOLOGY & GENETICS;CHEMISTRY;NEUROSCIENCE & BEHAVIOR;PHYSICS;GEOSCIENCES;ENGINEERING
Scopus记录号
2-s2.0-85077636951
来源库
Scopus
引用统计
被引频次[WOS]:212
成果类型期刊论文
条目标识符http://kc.sustech.edu.cn/handle/2SGJ60CL/62982
专题理学院_物理系
工学院_材料科学与工程系
作者单位
1.Department of Physics,National University of Singapore,Singapore,Singapore
2.Centre for Advanced 2D Materials,National University of Singapore,Singapore,Singapore
3.Department of Materials Science and Engineering,National University of Singapore,Singapore,Singapore
4.National Institute of Advanced Industrial Science and Technology,Tsukuba,Japan
5.Department of Physics,Southern University of Science and Technology,Shenzhen,China
6.Department of Physics and Astronomy,Vanderbilt University,Nashville,United States
7.Hunan Key Laboratory for Super-Microstructure and Ultrafast Process,School of Physics and Electronics,Central South University,Changsha,China
8.Department of Mechanical Engineering,University of Tokyo,Tokyo,Japan
9.Department of Electrical Engineering and Computer Science,Vanderbilt University,Nashville,United States
推荐引用方式
GB/T 7714
Toh,Chee Tat,Zhang,Hongji,Lin,Junhao,et al. Synthesis and properties of free-standing monolayer amorphous carbon[J]. NATURE,2020,577(7789):199-203.
APA
Toh,Chee Tat.,Zhang,Hongji.,Lin,Junhao.,Mayorov,Alexander S..,Wang,Yun Peng.,...&Özyilmaz,Barbaros.(2020).Synthesis and properties of free-standing monolayer amorphous carbon.NATURE,577(7789),199-203.
MLA
Toh,Chee Tat,et al."Synthesis and properties of free-standing monolayer amorphous carbon".NATURE 577.7789(2020):199-203.
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