Nanoparticle-coated silicon nanowires

被引：12

作者：

Hafiz, J. ^{[1
]}

Mukherjee, R. ^{[1
]}

Wang, X. ^{[1
]}

Cullinan, M. ^{[1
]}

Heberlein, J. V. R. ^{[1
]}

McMurry, P. H. ^{[1
]}

Girshick, S. L. ^{[1
]}

机构：

[1] Univ Minnesota, Dept Mech Engn, Minneapolis, MN 55455 USA

来源：

JOURNAL OF NANOPARTICLE RESEARCH | 2006年 / 8卷 / 06期

基金：

美国国家科学基金会;

关键词：

silicon nanowire; particle impaction; faceted catalyst; thermal plasma; hybrid nanostructure; coating; aerosols;

D O I：

10.1007/s11051-006-9111-8

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The synthesis of silicon nanowires that are densely coated with silicon nanoparticles is reported. These structures were produced in a two-step process, using a method known as hypersonic plasma particle deposition. In the first step, a Ti-Si nanoparticle film was deposited. In the second step the Ti-source was switched off, and nanoparticle-coated nanowires grew under the simultaneous action of Si vapor deposition and bombardment by Si nanoparticles. Total process time, including both steps, equaled 5 min, and resulted in formation of a dense network of randomly oriented nanowires covering1.5 cm(2) of substrate area. The nanowires are composed of single-crystal Si. The diameters of the nanowires vary over the range 100-800 nm. Each nanowire has a crystalline TiSi2 catalyst particle, believed to have been solid during nanowire growth, at its tip.

引用

页码：995 / 1002

页数：8

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