Fast vapor phase growth of SiO2 nanowires via surface-flow on Ag core/SiO2 shell structure

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	Fast vapor phase growth of SiO2 nanowires via surface-flow on Ag core/SiO2 shell structure
	Gao, L ; Ji, AL ; Lu, NP ; Li, CR ; Cao, ZX
刊名	AIP ADVANCES
	2012
卷号	2 期号:1
关键词	LIQUID-SOLID MECHANISM VISCOUS-FLOW MICROSTRUCTURES GLASS
ISSN号	2158-3226
通讯作者	Cao, ZX: Chinese Acad Sci, Inst Phys, POB 603, Beijing 100190, Peoples R China.
中文摘要	Uniform, millimeter-long SiO2 nanowires were grown from co-evaporation of Ag2O and SiO powders. The 'frozen' growth scenario by cooling enables revelation of the vapor-liquid-solid mechanism here in action, which is generally inaccessible due to the high temperature and high pressure condition. Ag core/SiO2 shell preformed in the vapor and wetting the substrate will expose its liquid Ag-core to catalyze nanowire growth, at a rate over 10 nm/s, via viscous flow of the encasing SiO2 layer which precipitates through a liquid neck zone. This method is characteristic of high-yield of catalytic seeds free from overgrowth or consuming, easy control of wire thickness by vapor pressure adjustment, enhanced rooting ability since catalyst deposition on substrate becomes dispensable, etc. Also spinning growth of nanowires observed in many other circumstances can be explained by the viscous flow mechanism. Copyright 2012 Author( s). This article is distributed under a Creative Commons Attribution 3.0 Unported License. [http://dx.doi.org/10.1063/1.3700232]
收录类别	SCI
资助信息	National Basic Research Program of China [2009CB930801, 2012CB933002]; National Natural Science Foundation of China [10974227, 51172272, 10904165, 10874153]; Chinese Academy of Sciences
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/38016]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Gao, L,Ji, AL,Lu, NP,et al. Fast vapor phase growth of SiO2 nanowires via surface-flow on Ag core/SiO2 shell structure[J]. AIP ADVANCES,2012,2(1).
APA	Gao, L,Ji, AL,Lu, NP,Li, CR,&Cao, ZX.(2012).Fast vapor phase growth of SiO2 nanowires via surface-flow on Ag core/SiO2 shell structure.AIP ADVANCES,2(1).
MLA	Gao, L,et al."Fast vapor phase growth of SiO2 nanowires via surface-flow on Ag core/SiO2 shell structure".AIP ADVANCES 2.1(2012).