Manipulating the size distribution of supported gold nanostructures
Manipulating the size distribution of supported gold nanostructures
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DOI：
10.1063/1.3675569
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发表时间：
2012-01
影响因子：
4
通讯作者：
A. Sundar;R. Hughes;P. Farzinpour;K. Gilroy;Gabriel A. Devenyi;J. Preston;S. Neretina
中科院分区：
文献类型：
--
作者：
A. Sundar;R. Hughes;P. Farzinpour;K. Gilroy;Gabriel A. Devenyi;J. Preston;S. Neretina
金纳米结构具有较宽的尺寸分布，被限制在金属箔和形成它们的氧化物基底之间。当加热时，氧化物和箔之间的表面能梯度导致金原子从纳米结构净迁移到箔。随着时间的推移，纳米结构表现出尺寸减小和尺寸分布变窄。变窄是由于仅与最大的纳米结构形成箔接触点的结果，这一特性使小纳米结构完好无损，同时消耗了较大的纳米结构。还展示了阵列金结构的尺寸减小至纳米级尺寸。
Gold nanostructures, with a wide size distribution, are confined between a metal foil and the oxide substrate upon which they were formed. When heated the surface energy gradient between the oxide and foil results in a net migration of gold atoms from the nanostructure to the foil. With time, the nanostructures show a size reduction and a narrowed size distribution. The narrowing results from the formation of foil contact points with only the largest nanostructures, a characteristic which leaves small nanostructures intact while consuming larger ones. Also demonstrated is the size reduction of arrayed gold structures to nanoscale dimensions.