Gold Nanowire Bundles Grown Radially Outward from Silicon Micro pillars

被引:33
作者
Huang, Youju [1 ,2 ]
Ferhan, Abdul Rahim [1 ]
Cho, Seok-Jin [3 ]
Lee, Haiwon [3 ]
Kim, Dong-Hwan [1 ,4 ]
机构
[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637457, Singapore
[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Div Polymer & Composite Mat, Ningbo 315201, Zhejiang, Peoples R China
[3] Hanyang Univ, Dept Chem, Seoul 133791, South Korea
[4] Sungkyunkwan Univ, Sch Chem Engn, Suwon 16419, South Korea
关键词
hierarchical nanostructures; gold nanowires; silicon nanowire arrays; SERS substrates; ultrasensitive detection; NANOPARTICLES; MICROPILLARS; NANOSTRUCTURES; NANOPILLARS; PERFORMANCE; FABRICATION; HOTSPOTS; GREEN; ARRAY;
D O I
10.1021/acsami.5b05161
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
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 "wire-on-pillar" architecture. Unlike zero-dimensional (OD) point-like, 1D linear, and 2D planar Au structures, the obtained 3D "wire-on-pillar" Au architecture provides abundant hotspots between adjacent Au wires, which led to remarkably high surface-enhanced Raman scattering (SERS) signals.
引用
收藏
页码:17582 / 17586
页数:5
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