中国物理B ›› 2021, Vol. 30 ›› Issue (11): 117301-117301.doi: 10.1088/1674-1056/abefc4

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Self-assembly 2D plasmonic nanorice film for surface-enhanced Raman spectroscopy

Tingting Liu(柳婷婷), Chuanyu Liu(刘船宇), Jialing Shi(石嘉玲), Lingjun Zhang(张玲君), Xiaonan Sun(孙晓楠), and Yingzhou Huang(黄映洲)   

  1. State Key Laboratory of Coal Mine Disaster Dynamics and Control and Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing 400044, China
  • 收稿日期:2021-02-05 修回日期:2021-03-13 接受日期:2021-03-18 出版日期:2021-10-13 发布日期:2021-11-03
  • 通讯作者: Xiaonan Sun, Yingzhou Huang E-mail:xnsun168@cqu.edu.cn;yzhuang@cqu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11974067), Natural Science Foundation Project of CQ CSTC (Grant Nos. cstc2019jcyj-msxmX0145, cstc2019jcyj-bshX0042, and cstc2019jcyj-msxmX0828), and Sharing Fund of Chongqing University & Large-scale Equipment.

Self-assembly 2D plasmonic nanorice film for surface-enhanced Raman spectroscopy

Tingting Liu(柳婷婷), Chuanyu Liu(刘船宇), Jialing Shi(石嘉玲), Lingjun Zhang(张玲君), Xiaonan Sun(孙晓楠), and Yingzhou Huang(黄映洲)   

  1. State Key Laboratory of Coal Mine Disaster Dynamics and Control and Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing 400044, China
  • Received:2021-02-05 Revised:2021-03-13 Accepted:2021-03-18 Online:2021-10-13 Published:2021-11-03
  • Contact: Xiaonan Sun, Yingzhou Huang E-mail:xnsun168@cqu.edu.cn;yzhuang@cqu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11974067), Natural Science Foundation Project of CQ CSTC (Grant Nos. cstc2019jcyj-msxmX0145, cstc2019jcyj-bshX0042, and cstc2019jcyj-msxmX0828), and Sharing Fund of Chongqing University & Large-scale Equipment.

摘要: As an ultrasensitive sensing technology, the application of surface enhanced Raman spectroscopy (SERS) is one interesting topic of nano-optics, which has huge application prospectives in plenty of research fields. In recent years, the bottleneck in SERS application could be the fabrication of SERS substrate with excellent enhancement. In this work, a two-dimensional (2D) Ag nanorice film is fabricated by self-assembly method as a SERS substrate. The collected SERS spectra of various molecules on this 2D plasmonic film demonstrate quantitative detection could be performed on this SERS substrate. The experiment data also demonstrate this 2D plasmonic film consisted of anisotropic nanostructures has no obvious SERS polarization dependence. The simulated electric field distribution points out the SERS enhancement comes from the surface plasmon coupling between nanorices. And the SERS signals is dominated by molecules adsorbed at different regions of nanorice surface at various wavelengths, which could be a good near IR SERS substrate for bioanalysis. Our work not only enlarges the surface plasmon properties of metal nanostructure, but also exhibits the good application prospect in SERS related fields.

关键词: surface plasmon, surface-enhanced Raman spectroscopy (SERS), nanorice, 2D plasmonic film

Abstract: As an ultrasensitive sensing technology, the application of surface enhanced Raman spectroscopy (SERS) is one interesting topic of nano-optics, which has huge application prospectives in plenty of research fields. In recent years, the bottleneck in SERS application could be the fabrication of SERS substrate with excellent enhancement. In this work, a two-dimensional (2D) Ag nanorice film is fabricated by self-assembly method as a SERS substrate. The collected SERS spectra of various molecules on this 2D plasmonic film demonstrate quantitative detection could be performed on this SERS substrate. The experiment data also demonstrate this 2D plasmonic film consisted of anisotropic nanostructures has no obvious SERS polarization dependence. The simulated electric field distribution points out the SERS enhancement comes from the surface plasmon coupling between nanorices. And the SERS signals is dominated by molecules adsorbed at different regions of nanorice surface at various wavelengths, which could be a good near IR SERS substrate for bioanalysis. Our work not only enlarges the surface plasmon properties of metal nanostructure, but also exhibits the good application prospect in SERS related fields.

Key words: surface plasmon, surface-enhanced Raman spectroscopy (SERS), nanorice, 2D plasmonic film

中图分类号:  (Raman and optical spectroscopy)

  • 74.25.nd
78.30.-j (Infrared and Raman spectra) 36.20.Ng (Vibrational and rotational structure, infrared and Raman spectra)