Synthesis of Nano-Al with Fe₂O₃ Nanowires to Realize Core-Shell Composite Materials Arrays Based on Colloidal Templates

Abstract:

Controlled composite materials arrays have been widely applied for their unique physical and chemical properties, with the aim of developing nanodevices functionality. Nanosphere lithography is a successful technique for fabricating highly ordered arrays of various materials. In this work, the polystyrene colloidal crystal template in large area on Si substrate was obtained via dipping method. The thickness of the single layer template fabricated can be precisely controlling the particle concentration and the film formation speed. The ordered arrays of Fe₂O₃ nanowires were obtained via convenient spin method on this template and heat treatment subsequently. Finally, the uniform Al/Fe₂O₃ arrays were produced by magnetron sputtering method. These periodic composite arrays cover large area substrates (of dimensions > 1 cm × 1 cm) and are uniform in terms of nanowire height and density. The arrays thickness and gaps between nanowires are easily controlled by either the diameter of colloidal crystal or the parameters of magnetron sputtering.

• Periodical: Key Engineering Materials (Volumes 645-646)
• Pages: 347-351
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.645-646.347
• Online since: May 2015
• Authors: Si Min He, Jin Chen, Kuang Fang, Zhi Qiang Qiao, Jin Shan Li*
• Keywords: Al/Fe₂O₃, Colloidal Templates, Nanowires Arrays, Silicon Substrate

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