Gold Nanowire Bundles Grown Radially Outward from Silicon Micropillars

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• 作者：Youju Huang ; Abdul Rahim Ferhan ; Seok-Jin Cho ; Haiwon Lee ; Dong-Hwan Kim
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：August 19, 2015
• 年：2015
• 卷：7
• 期：32
• 页码：17582-17586
• 全文大小：382K
• ISSN：1944-8252

文摘

One-dimensional (1D) micro- and nanostructures have become increasingly popular because of their tremendous prospect in various applications. While the design and fabrication of these structures from a single component in two-dimensional (2D) arrays is common, the attainment of hierarchical three-dimensional (3D) architectures made up of multicomponent one-dimensional structures is rare. Herein we report, for the first time, the lateral growth of gold nanowires from the sidewalls of substrate grown silicon micropillars to form a unique 鈥渨ire-on-pillar鈥?architecture. Unlike zero-dimensional (0D) point-like, 1D linear, and 2D planar Au structures, the obtained 3D 鈥渨ire-on-pillar鈥?Au architecture provides abundant hotspots between adjacent Au wires, which led to remarkably high surface-enhanced Raman scattering (SERS) signals.