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Chin. Phys. B, 2018, Vol. 27(1): 017801    DOI: 10.1088/1674-1056/27/1/017801

A general method for large-scale fabrication of Cu nanoislands/dragonfly wing SERS flexible substrates

Yuhong Wang(王玉红)1, Mingli Wang(王明利)1, Lin Shen(沈琳)2, Yanying Zhu(朱艳英)1, Xin Sun(孙鑫)1, Guochao Shi(史国超)1, Xiaona Xu(许晓娜)1, Ruifeng Li(李瑞峰)1, Wanli Ma(马万里)3
1 Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China;
2 Liren College of Yanshan University, Qinhuangdao 066004, China;
3 Department of Mathematics, NC State University, Raleigh 276968205, USA
Abstract  Noble metal nanorough surfaces that support strong surface-enhanced Raman scattering (SERS) is widely applied in the practical detection of organic molecules. A low-cost, large-area, and environment-friendly SERS-active substrate was acquired by sputtering inexpensive copper (Cu) on natural dragonfly wing (DW) with an easily controlled way of magnetron sputtering. By controlling the sputtering time of the fabrication of Cu on the DW, the performance of the SERS substrates was greatly improved. The SERS-active substrates, obtained at the optimal sputtering time (50 min), showed a low detection limit (10-6M) to 4-aminothiophenol (4-ATP), a high average enhancement factor (EF, 1.98×104), excellent signal uniformity, and good reproducibility. In addition, the results of the 3D finite-difference time-domain (3D-FDTD) simulation illustrated that the SERS-active substrates provided high-density “hot spots”, leading to a large SERS enhancement.
Keywords:  surface-enhanced Raman scattering      dragonfly wing      copper      magnetron sputtering  
Received:  21 May 2017      Revised:  24 September 2017      Accepted manuscript online: 
PACS:  78.30.-j (Infrared and Raman spectra)  
  74.25.nd (Raman and optical spectroscopy)  
  61.46.-w (Structure of nanoscale materials)  
Fund: Project supported by the Youth Fund Project of University Science and Technology Plan of Hebei Provincial Department of Education, China (Grant No. QN2015004) and the Doctoral Fund of Yanshan University, China (Grant No. B924).
Corresponding Authors:  Mingli Wang     E-mail:

Cite this article: 

Yuhong Wang(王玉红), Mingli Wang(王明利), Lin Shen(沈琳), Yanying Zhu(朱艳英), Xin Sun(孙鑫), Guochao Shi(史国超), Xiaona Xu(许晓娜), Ruifeng Li(李瑞峰), Wanli Ma(马万里) A general method for large-scale fabrication of Cu nanoislands/dragonfly wing SERS flexible substrates 2018 Chin. Phys. B 27 017801

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