Batchwise growth of silica cone patterns via self-assembly of aligned nanowires

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	Batchwise growth of silica cone patterns via self-assembly of aligned nanowires
	Luo, SD ; Zhou, WY ; Chu, WG ; Shen, J ; Zhang, ZX ; Liu, LF ; Liu, DF ; Xiang, YJ ; Ma, WJ ; Xie, SS
刊名	SMALL
	2007
卷号	3 期号:3 页码:444
关键词	OXIDE NANOWIRES MOLTEN GALLIUM LARGE-SCALE SOLID MECHANISM CRYSTAL-GROWTH PHOTOLUMINESCENCE NANOTUBES CATALYST LONG SIO2
ISSN号	1613-6810
通讯作者	Zhou, WY: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100080, Peoples R China.
中文摘要	Silica-cone patterns self-assembled from well-aligned nanowires are synthesized using gallium droplets as the catalyst and silicon wafers as the silicon source. The cones form a triangular pattern array radially on almost the whole surface of the molten Ga ball. Detailed field-emission scanning electron microscopy (SEM) analysis shows that the cone-pattern pieces frequently slide off and are detached from the molten Ga ball surface, which leads to the exposure of the catalyst surface and the growth of a new batch of silicon oxide nanowires as well as the cone patterns. The processes of growth and detachment alternate, giving rise to the formation of a volcano-like or a flower-like structure with bulk-quantity pieces of cone patterns piled up around the Ga ball. Consequently, the cone-patterned layer grows batch by batch until the reaction is terminated. Different to the conventional metal-catalyzed growth model, the batch-by-batch growth of the triangular cone patterns proceeds on the molten Ga balls via alternate growth on and detachment from the catalyst surface of the patterns; the Ga droplet can be used continuously and circularly as an effective catalyst for the growth of amorphous SiOx nanowires during the whole growth period. The intriguing batchwise growth phenomena may enrich our understanding of the vapour-liquid-solid (VLS) growth mechanism for the catalyst growth of nanowires or other nanostructures and may offer a different way of self-assembling novel silica nanostructures.
收录类别	SCI
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/311004/34149]
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	Luo, SD,Zhou, WY,Chu, WG,et al. Batchwise growth of silica cone patterns via self-assembly of aligned nanowires[J]. SMALL,2007,3(3):444.
APA	Luo, SD.,Zhou, WY.,Chu, WG.,Shen, J.,Zhang, ZX.,...&Xie, SS.(2007).Batchwise growth of silica cone patterns via self-assembly of aligned nanowires.SMALL,3(3),444.
MLA	Luo, SD,et al."Batchwise growth of silica cone patterns via self-assembly of aligned nanowires".SMALL 3.3(2007):444.