Flow assisted synthesis of highly ordered silica nanowire arrays
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- Yan, C., Zhang, T. & Lee, P.S. Appl. Phys. A (2009) 94: 763. doi:10.1007/s00339-008-4974-4
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Silica nanowires were synthesized through a self-supplied vapor–liquid–solid (VLS) mechanism. Unlike randomly entangled nanowires on the substrate, highly ordered nanowire arrays have been successfully fabricated using a sandwich-like configuration to define and enhance the local gas-flow. As-synthesized nanowires were characterized to be amorphous silicon dioxide with Au as catalysts. The role of the sandwich-like structure and the effect of gas-flow on the alignment of silica nanowires are demonstrated.