Plasmonics

, Volume 6, Issue 3, pp 515–519

Plasmonic Interaction Between Silver Nano-Cubes and a Silver Ground Plane Studied by Surface-Enhanced Raman Scattering

  • Mingfang Yi
  • Douguo Zhang
  • Pei Wang
  • Xiaojin Jiao
  • Steve Blair
  • Xiaolei Wen
  • Qiang Fu
  • Yonghua Lu
  • Hai Ming
Article

DOI: 10.1007/s11468-011-9230-7

Cite this article as:
Yi, M., Zhang, D., Wang, P. et al. Plasmonics (2011) 6: 515. doi:10.1007/s11468-011-9230-7

Abstract

The plasmonic interaction between silver nano-cubes and a silver ground plane with and without a dielectric spacer is studied for surface-enhanced Raman scattering (SERS) for rhodamine 6G (R6G) molecules absorbed onto the silver nano-cubes. Experimental results show that the composite substrates made from silver nano-cubes and the silver ground plane produce a stronger SERS signal than by the cubes alone, due to the plasmonic interaction between the cubes and the film. Numerical simulation is used to verify the plasmonic enhancement of the composite substrate and is consistent with the experimental results. The lowest concentration of R6G molecules which can be detected with the composite substrate is about 10−11 M with our setup.

Keywords

Plasmonic interaction Surface-enhanced Raman scattering (SERS) Local electromagnetic field 

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Mingfang Yi
    • 1
    • 2
  • Douguo Zhang
    • 1
  • Pei Wang
    • 1
  • Xiaojin Jiao
    • 3
  • Steve Blair
    • 3
  • Xiaolei Wen
    • 1
  • Qiang Fu
    • 1
  • Yonghua Lu
    • 1
  • Hai Ming
    • 1
  1. 1.Department of Optics and Optical Engineering, Anhui Key Laboratory of Optoelectronic Science and TechnologyUniversity of Science and Technology of ChinaHefeiPeople’s Republic of China
  2. 2.Anqing Teachers CollegeAnqingPeople’s Republic of China
  3. 3.Department of Electrical and Computer EngineeringUniversity of UtahSalt Lake CityUSA

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