Free-Standing Two-Dimensional Gold Membranes Produced by Extreme Mechanical Thinning

doi:10.1021/acsnano.0c06697

IMR OpenIR

	Free-Standing Two-Dimensional Gold Membranes Produced by Extreme Mechanical Thinning
	Zhu, Qi 1,2; Hong, Youran 1,2; Cao, Guang 1,2; Zhang, Yin 3; Zhang, Xiaohan 3; Du, Kui 4; Zhang, Ze 1,2; Zhu, Ting 3; Wang, Jiangwei 1,2
通讯作者	Zhu, Ting(ting.zhu@me.gatech.edu) ; Wang, Jiangwei(jiangwei_wang@zju.edu.cn)
	2020-12-22
发表期刊	ACS NANO
ISSN	1936-0851
卷号	14 期号:12 页码:17091-17099
摘要	Two-dimensional (2D) materials exhibit exceptional physical and chemical properties owing to their atomically thin structures. However, it remains challenging to produce 2D materials consisting of pure monoelemental metallic atoms. Here free-standing 2D gold (Au) membranes were prepared via in situ transmission electron microscopy straining of Au films. The applied in-plane tensile strain induces an extensive amount of out-of-plane thinning deformation in a local region of an Au thin film, resulting in the nucleation and growth of a free-standing 2D Au membrane surrounded by its film matrix. This 2D membrane is shown to be one atom thick with a simple-hexagonal lattice, which forms an atomically sharp interface with the face-centered cubic lattice of the film matrix. Diffusive transport of surface atoms, in conjunction with the dynamic evolution of interface dislocations, plays important roles in the formation of 2D Au membranes during the mechanical thinning process. These results demonstrate a top-down approach to produce free-standing 2D membranes and provide a general understanding on extreme mechanical thinning of metallic films down to the single-atom-thick limit.
关键词	2D gold membrane mechanical thinning defect diffusion in situ transmission electron microscopy
资助者	National Natural Science Foundation of China
DOI	10.1021/acsnano.0c06697
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51771172] ; National Natural Science Foundation of China[52071284]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000603308800070
出版者	AMER CHEMICAL SOC
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/158916
专题	中国科学院金属研究所
通讯作者	Zhu, Ting; Wang, Jiangwei
作者单位	1.Zhejiang Univ, Ctr Electron Microscopy, Sch Mat Sci & Engn, Hangzhou 310027, Peoples R China 2.Zhejiang Univ, State Key Lab Silicon Mat, Sch Mat Sci & Engn, Hangzhou 310027, Peoples R China 3.Georgia Inst Technol, Woodruff Sch Mech Engn, Atlanta, GA 30332 USA 4.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Qi,Hong, Youran,Cao, Guang,et al. Free-Standing Two-Dimensional Gold Membranes Produced by Extreme Mechanical Thinning[J]. ACS NANO,2020,14(12):17091-17099.
APA	Zhu, Qi.,Hong, Youran.,Cao, Guang.,Zhang, Yin.,Zhang, Xiaohan.,...&Wang, Jiangwei.(2020).Free-Standing Two-Dimensional Gold Membranes Produced by Extreme Mechanical Thinning.ACS NANO,14(12),17091-17099.
MLA	Zhu, Qi,et al."Free-Standing Two-Dimensional Gold Membranes Produced by Extreme Mechanical Thinning".ACS NANO 14.12(2020):17091-17099.