On the wurtzite to tetragonal phase transformation in ZnO nanowires

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	On the wurtzite to tetragonal phase transformation in ZnO nanowires
	Wang J; Shen YG; Song F(宋凡); Ke FJ(柯孚久); 廖小舟 XZ; Lu CS(卢春生)
刊名	NANOTECHNOLOGY
	2017-04-21
卷号	28 期号:16
关键词	ZnO nanowires phase transformation size effect strain rate molecular dynamics
ISSN号	0957-4484
中文摘要	There is a long standing contradiction on the tensile response of zinc oxide nanowires between theoretical prediction and experimental observations. Although it is proposed that there is a ductile behavior dominated by phase transformation, only an elastic deformation and brittle fracture was witnessed in experiments. Using molecular dynamics simulations, we clarified that, as the lateral dimension of zinc oxide nanowires increases to a critical value, an unambiguous ductile-to-brittle transition occurs. The critical value increases with decreasing the strain rate. Factors including planar defects and surface contamination induce brittle fracture prior to the initiation of phase transformation. These findings are consistent with previous atomistic standpoints and experimental results.
类目[WOS]	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
研究领域[WOS]	Science & Technology - Other Topics ; Materials Science ; Physics
关键词[WOS]	ZINC-OXIDE ; MECHANICAL-PROPERTIES ; SOLAR-CELLS ; SIZE ; SIMULATION ; DYNAMICS ; NANOSTRUCTURES ; NANOPARTICLES ; STABILITY ; BEHAVIOR
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000404289700001
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/60630]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Wang J,Shen YG,Song F,et al. On the wurtzite to tetragonal phase transformation in ZnO nanowires[J]. NANOTECHNOLOGY,2017,28(16).
APA	Wang J,Shen YG,宋凡,柯孚久,廖小舟 XZ,&卢春生.(2017).On the wurtzite to tetragonal phase transformation in ZnO nanowires.NANOTECHNOLOGY,28(16).
MLA	Wang J,et al."On the wurtzite to tetragonal phase transformation in ZnO nanowires".NANOTECHNOLOGY 28.16(2017).