Low-energy transmission electron diffraction and imaging of large-area   graphene

doi:10.1126/sciadv.1603231

CORC > 北京大学 > 化学与分子工程学院

	Low-energy transmission electron diffraction and imaging of large-area graphene
	Zhao, Wei ; Xia, Bingyu ; Lin, Li ; Xiao, Xiaoyang ; Liu, Peng ; Lin, Xiaoyang ; Peng, Hailin ; Zhu, Yuanmin ; Yu, Rong ; Lei, Peng ; Wang, Jiangtao ; Zhang, Lina ; Xu, Yong ; Zhao, Mingwen ; Peng, Lianmao ; Li, Qunqing ; Duan, Wenhui ; Liu, Zhongfan ; Fan, Shoushan ; Jiang, Kaili
刊名	SCIENCE ADVANCES
	2017
关键词	SINGLE-CRYSTAL GRAPHENE AUGMENTED-WAVE METHOD FREESTANDING GRAPHENE STEM INSTRUMENT SHADOW IMAGES COPPER FOILS ADSORPTION GROWTH HYDROGEN ICE
DOI	10.1126/sciadv.1603231
英文摘要	Two-dimensional (2D) materials have attracted interest because of their excellent properties and potential applications. A key step in realizing industrial applications is to synthesize wafer-scale single-crystal samples. Until now, single-crystal samples, such as graphene domains up to the centimeter scale, have been synthesized. However, a new challenge is to efficiently characterize large-area samples. Currently, the crystalline characterization of these samples still relies on selected-area electron diffraction (SAED) or low-energy electron diffraction (LEED), which is more suitable for characterizing very small local regions. This paper presents a highly efficient characterization technique that adopts a low-energy electrostatically focused electron gun and a super-aligned carbon nanotube (SACNT) film sample support. It allows rapid crystalline characterization of large-area graphene through a single photograph of a transmission-diffracted image at a large beam size. Additionally, the low-energy electron beam enables the observation of a unique diffraction pattern of adsorbates on the suspended graphene at room temperature. This work presents a simple and convenient method for characterizing the macroscopic structures of 2D materials, and the instrument we constructed allows the study of the weak interaction with 2D materials.; National Basic Research Program of China [2012CB932301]; National Natural Science Foundation of China [11321091, 51672152, 51472142, 11274190, 21433006]; National Thousand-Young-Talents Program; Tsinghua University Initiative Scientific Research Program; SCI(E); ARTICLE; 9; 3
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/471000]
专题	化学与分子工程学院信息科学技术学院
推荐引用方式 GB/T 7714	Zhao, Wei,Xia, Bingyu,Lin, Li,et al. Low-energy transmission electron diffraction and imaging of large-area graphene[J]. SCIENCE ADVANCES,2017.
APA	Zhao, Wei.,Xia, Bingyu.,Lin, Li.,Xiao, Xiaoyang.,Liu, Peng.,...&Jiang, Kaili.(2017).Low-energy transmission electron diffraction and imaging of large-area graphene.SCIENCE ADVANCES.
MLA	Zhao, Wei,et al."Low-energy transmission electron diffraction and imaging of large-area graphene".SCIENCE ADVANCES (2017).