none Nanowires from Aligned One-dimensional Arrays of Co Nanoclusters on Al2O3 Grown on Vicinal NiAl Surfaces

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/7505

Title:	none Nanowires from Aligned One-dimensional Arrays of Co Nanoclusters on Al2O3 Grown on Vicinal NiAl Surfaces
Authors:	黃絜詠;Jie-Yung Huang
Contributors:	物理研究所
Keywords:	穿隧電子顯微儀;鈷奈米團簇;傾斜表面;氧化鋁薄膜;Co nanocluster;vicinal surface;Al2O3;STM
Date:	2008-04-24
Issue Date:	2009-09-22 10:59:01 (UTC+8)
Publisher:	國立中央大學圖書館
Abstract:	本篇論文我們利用金屬自主性排列方式，方便地組成金屬奈米線綜合體。我們採用 NiAl(100)平面往 [010] 方向傾斜小角度得到階梯表面，此樣品經由氧化過程，得到有序氧化鋁薄膜區域，在此區域中有突起的結構會沿著 [001] 方向，且它的長度可以到微米尺度。而進一步地利用氣相沉積方法，將鈷奈米團簇成長在氧化鋁薄膜上，而鈷奈米團簇會優先依著有序氧化鋁薄膜區域的突起結構來排列( 沿著 [001] 方向來延展 )，然後得到一維奈米金屬線，其寬度小於三奈米、長度高達至微米尺度。 We present a simple, self-organized approach for synthesis of arrays of supported metal nanowires. By oxidizing NiAl surfaces vicinal to the (100) plane titled along the crystallographic direction [010], we produce ordered θ-Al2O3 thin-films exhibiting highly uniform protrusion stripes which propagate uniquely in crystallographic direction [001] of the NiAl and attain length of micrometer-scale. These protrusions are preferential nucleation centres for vapor-deposited metal; the nanoclusters grown from vapor-deposited metal are thus aligned and form one-dimensional arrays along the [001] direction. The Co cluster arrays form readily nanowires with a width as small as 3 nm and length up to micrometers.
Appears in Collections:	[Graduate Institute of Physics] Electronic Thesis & Dissertation

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