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Free-Standing Two-Dimensional Gold Membranes Produced by Extreme Mechanical Thinning
Zhu, Qi1,2; Hong, Youran1,2; Cao, Guang1,2; Zhang, Yin3; Zhang, Xiaohan3; Du, Kui4; Zhang, Ze1,2; Zhu, Ting3; Wang, Jiangwei1,2
Corresponding AuthorZhu, Ting(ting.zhu@me.gatech.edu) ; Wang, Jiangwei(jiangwei_wang@zju.edu.cn)
2020-12-22
Source PublicationACS NANO
ISSN1936-0851
Volume14Issue:12Pages:17091-17099
AbstractTwo-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.
Keyword2D gold membrane mechanical thinning defect diffusion in situ transmission electron microscopy
Funding OrganizationNational Natural Science Foundation of China
DOI10.1021/acsnano.0c06697
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51771172] ; National Natural Science Foundation of China[52071284]
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000603308800070
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/158916
Collection中国科学院金属研究所
Corresponding AuthorZhu, Ting; Wang, Jiangwei
Affiliation1.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
Recommended Citation
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.
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