南方科技大学知识苑(SUSTech KC): Crystal plane orientation-dependent surface atom diffusion in sub-10-nm Au nanocrystals

题名	Crystal plane orientation-dependent surface atom diffusion in sub-10-nm Au nanocrystals
作者	Jiang, Junnan 1; Chu, Shufen 1,2,3; Zhang, Yin 4; Sun, Guangbin 5; Jin, Junhui 5; Zeng, Xiaoqin 2,3; Chen, Mingwei6,7 ; Liu, Pan 1,5
通讯作者	Zhang, Yin; Liu, Pan
发表日期	2024-05-24
DOI	10.1126/sciadv.adn5946
发表期刊	SCIENCE ADVANCES 影响因子和分区
ISSN	2375-2548
卷号	10 期号:21
摘要	Surface atom diffusion is a ubiquitous phenomenon in nanostructured metals with ultrahigh surface-to-volume ratios. However, the fundamental atomic mechanism of surface atom diffusion remains elusive. Here, we report in situ atomic-scale observations of surface pressure-driven atom diffusion in gold nanocrystals at room temperature using high-resolution transmission electron microscopy with a high-speed detection camera. The topmost layer of atoms on (001) plane initially diffuse in a column-by-column manner. As diffusion proceeds, the remaining atomic columns collectively inject into adjacent underlayer, accompanied by nucleation of a surface dislocation. In comparison, atoms on (111) plane directly diffuse to the base without collective injection. Quantitative calculations indicate that these crystal plane orientation-dependent atom diffusion behaviors contribute to the larger diffusion coefficient of (111) plane compared to (001) plane in addition to the effect of diffusion activation energy. Our findings provide valuable insights into atomic mechanisms of diffusion-dominant morphology evolution of nanostructured metals and guide the design of nanostructured materials with enhanced structural stability.
相关链接	[来源记录]
收录类别	SCI ; EI
语种	英语
学校署名	其他
资助项目	National Natural Science Foundation of China["52173224","52130105"] ; Natural Science Foundation of Shanghai["23ZR1431500","23ZR1433000","21ZR1431200"] ; China Postdoctoral Science Foundation[2023 M742218] ; National Science Foundation[NSF-DMR-1804320]
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001263685300017
出版者	AMER ASSOC ADVANCEMENT SCIENCE
来源库	Web of Science
引用统计	被引频次[WOS]：1
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/789895
专题	工学院_材料科学与工程系工学院
作者单位	1.Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai Key Lab Adv High Temp Mat & Precis Formin, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China 2.Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloy Net Forming, Shanghai 200240, Peoples R China 3.Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composite, Shanghai 200240, Peoples R China 4.Peking Univ, Coll Engn, Dept Mech & Engn Sci, State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China 5.Shanghai Jiao Tong Univ, JA Solar New Energy Mat Joint Res Ctr, Shanghai 200240, Peoples R China 6.Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA 7.Southern Univ Sci & Technol, Coll Engn, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Junnan,Chu, Shufen,Zhang, Yin,et al. Crystal plane orientation-dependent surface atom diffusion in sub-10-nm Au nanocrystals[J]. SCIENCE ADVANCES,2024,10(21).
APA	Jiang, Junnan.,Chu, Shufen.,Zhang, Yin.,Sun, Guangbin.,Jin, Junhui.,...&Liu, Pan.(2024).Crystal plane orientation-dependent surface atom diffusion in sub-10-nm Au nanocrystals.SCIENCE ADVANCES,10(21).
MLA	Jiang, Junnan,et al."Crystal plane orientation-dependent surface atom diffusion in sub-10-nm Au nanocrystals".SCIENCE ADVANCES 10.21(2024).