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Plasmonics

, 6:785 | Cite as

Polarization-Dependent Surface-Enhanced Raman Scattering via Aligned Gold Nanorods in Poly(Vinyl Alcohol) Film

  • Jun Tao
  • Yonghua LuEmail author
  • Junxue Chen
  • Dawei Lu
  • Chunchong Chen
  • Pei Wang
  • Hai MingEmail author
Article

Abstract

A low-cost and effective surface-enhanced Raman scattering (SERS) substrate consisting of aligned gold nanorods is obtained by stretching the poly(vinyl alcohol) nanorods composite film doped with the probe molecule. The SERS intensity of characteristic vibrational band of the probe is observed obviously dependent on the angle (θ) between incident polarization and major axis of nanorod. The relationship between them manifests a cos2 θ dependence. The result is illustrated from both the localized field enhancement and optical antenna effect of gold nanorod. The finite element method calculation is also performed to further confirm the conclusion.

Keywords

Surface plasmons Particles Polarization Surface-enhanced Raman scattering (SERS) 

Notes

Acknowledgments

This work is supported by the National Basic Research Program of China under grant no. 2011cb301802, the National Science Foundation of China under grant no. 60736037, no. 61036005 and no.11074240. Y.H. Lu is also supported by “the Fundamental Research Funds for the Central Universities.”

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  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

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