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Plasmonics

, Volume 5, Issue 4, pp 363–368 | Cite as

Enhanced Intermolecular Energy Transfer in the Vicinity of a Plasmonic Nanorice

  • H. Y. Chung
  • P. T. LeungEmail author
  • D. P. Tsai
Article

Abstract

The problem of radiationless Förster energy transfer between a donor and an acceptor molecule is studied in the vicinity of a metallic nanorice. Using a recently formulated effective medium theory, the modified dipole–dipole interaction between the molecules in the vicinity of a spheroidal metallic nanoshell can be easily formulated, from which huge enhancement of the energy transfer rate is obtained due to the resonant excitation of the bonding and the antibonding plasmonic modes of the nanoshell. Effects due to the different locations and orientations of the molecules are also studied. The results show that the plasmonic resonances depend mainly on the nanorice geometry and much less on the configuration of the molecules, whereas the enhancement is more sensitive to the relative orientations and locations of the molecules.

Keywords

Förster energy transfer Metallic nanorice Plasmonic enhancement 

Notes

Acknowledgments

The authors are grateful for the research support from the National Science Council of Taiwan, ROC, under project numbers NSC 98-2120-M-002-004-, NSC 97-2112-M-002-023-MY2, NSC 96-2923-M-002-002-MY3, and 98-EC-17-A-09-S1-019, respectively, and to the National Taiwan University and National Center for Theoretical Sciences, Taipei Office. P.T. Leung would like to thank the support from a Fulbright Scholarship which initiated his collaboration with the group at National Taiwan University.

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Department of PhysicsNational Taiwan UniversityTaipeiRepublic of China
  2. 2.Instrument Technology Research Center, National Applied Research LaboratoryHsinchuRepublic of China
  3. 3.Institute of Optoelectronic Sciences, National Taiwan Ocean UniversityKeelungRepublic of China
  4. 4.Department of PhysicsPortland State UniversityPortlandUSA
  5. 5.Research Center for Applied SciencesAcademia SinicaTaipeiRepublic of China

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