CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Perforated nanocap array: Facile fabrication process and efficient surface enhanced Raman scattering with fluorescence suppression |
Wang Jun (王军), Huang Li-Qing (黄丽清), Tong Hui-Min (童慧敏), Zhai Li-Peng (翟立鹏), Yuan Lin (袁林), Zhao Li-Hua (赵丽华), Zhang Wei-Wei (张薇薇), Shan Dong-Zhi (单冬至), Hao Ai-Wen (郝爱文), Feng Xue-Hong (冯雪红) |
Non-equilibrium Condensed Matter and Quantum Engineering Laboratory, School of Science, Xi'an Jiaotong University, Xi'an 710049, China |
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Abstract Recently, individual reduced-symmetry metal nanostructures and their plasmonic properties have been studied extensively. However, little attention has been paid to the approach to fabricating ordered reduced-symmetry metal nanostructure array. In this paper, a novel perforated silver nanocap array with high surface-enhanced Raman scattering (SERS) activity and fluorescence suppression is reported. The array is fabricated by electron beam evaporating Ag onto the perforated barrier layer side of hard anodization (HA) anodic aluminum oxide (AAO) template. The morphology and optical property of the perforated silver nanocap array are characterized by atomic force microscope (AFM), scanning electron microscope (SEM) and absorption spectra. The results of SERS measurements reveal that the perforated silver nanocap array offers high SERS activity and fluorescence suppression compared with imperforated silver nanocap array.
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Received: 03 August 2012
Revised: 24 September 2012
Accepted manuscript online:
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PACS:
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73.22.Gk
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(Broken symmetry phases)
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73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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Fund: Project supported by the Industry Key Technologies R & D Project in Shaanxi Province of China (Grant No. 2012K07-19). |
Corresponding Authors:
Huang Li-Qing
E-mail: lqhuangxjtu@126.com
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Cite this article:
Wang Jun (王军), Huang Li-Qing (黄丽清), Tong Hui-Min (童慧敏), Zhai Li-Peng (翟立鹏), Yuan Lin (袁林), Zhao Li-Hua (赵丽华), Zhang Wei-Wei (张薇薇), Shan Dong-Zhi (单冬至), Hao Ai-Wen (郝爱文), Feng Xue-Hong (冯雪红) Perforated nanocap array: Facile fabrication process and efficient surface enhanced Raman scattering with fluorescence suppression 2013 Chin. Phys. B 22 047301
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