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Fabrication of nanowire network AAO and its application in SERS

Qi Jiwei, Li Yudong, Yang Ming, Wu Qiang, Chen Zongqiang, Peng Jingyang, Liu Yue, Wang Wudeng, Yu Xuanyi, Sun Qian* and Xu Jingjun*

Author Affiliations

The MOE Key Laboratory of Weak-Light Nonlinear Photonics, Tianjin Key Laboratory of Photonics and Technology, TEDA Applied Physics School and School of Physics, Nankai University, Tianjin 300457, China

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Nanoscale Research Letters 2013, 8:495  doi:10.1186/1556-276X-8-495

Published: 21 November 2013


In this paper, nanowire network anodized aluminum oxide (AAO) was fabricated by just adding a simple film-eroding process after the production of porous AAO. After depositing 50 nm of Au onto the surface, nanowire network AAO can be used as ultrasensitive and high reproducibility surface-enhanced Raman scattering (SERS) substrate. The average Raman enhancement factor of the nanowire network AAO SERS substrate can reach 5.93 × 106, which is about 14% larger than that of commercial Klarite® substrates. Simultaneously, the relative standard deviations in the SERS intensities are limited to approximately 7%. All of the results indicate that our large-area low-cost high-performance nanowire structure AAO SERS substrates have a great advantage in chemical/biological sensing applications.

Surface-enhanced Raman scattering; AAO; Nanowire network