Abstract

We present a quasi-static model of the electromagnetic interaction between dipolar emitting molecule and a Plasmon-metal nano-sphere. Based on the image theory of dielectric sphere, we model the Plasmon nano-spheres by off-centered dipole images. The retardation effect is taken into account by electrodynamical modifications on spherical polarizability and dipole radiation field. The modifications of the radiative rate, total decay rate and the quantum yield for the molecules are derived. The image model indicates the strong distance dependence of the enhancement on both radiative and total decay rates. The comparison with the exact electrodynamical model and other simplified models indicate that the off-center image provide accurate predictions on radiative and total decay rates, even in close distances.

Original languageEnglish (US)
Title of host publicationColloidal Nanocrystals for Biomedical Applications VIII
Volume8595
DOIs
StatePublished - May 30 2013
EventColloidal Nanocrystals for Biomedical Applications VIII - San Francisco, CA, United States
Duration: Feb 2 2013Feb 4 2013

Other

OtherColloidal Nanocrystals for Biomedical Applications VIII
CountryUnited States
CitySan Francisco, CA
Period2/2/132/4/13

Fingerprint

Nanospheres
Electromagnetic Phenomena
Luminescence
Metals
Radiation
luminescence
decay rates
dipoles
static models
electromagnetic interactions
Molecules
radiation distribution
molecules
Quantum yield
augmentation
predictions
metals

Keywords

  • fluorescence enhancement
  • image theory
  • Plasmon sphere

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

Cite this

Zhang, Z., Lim, D., & Diaz, R. (2013). Image theory for plasmon-modified luminescence near nanospheres. In Colloidal Nanocrystals for Biomedical Applications VIII (Vol. 8595). [859508] https://doi.org/10.1117/12.2004164

Image theory for plasmon-modified luminescence near nanospheres. / Zhang, Zhe; Lim, Derrick; Diaz, Rodolfo.

Colloidal Nanocrystals for Biomedical Applications VIII. Vol. 8595 2013. 859508.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zhang, Z, Lim, D & Diaz, R 2013, Image theory for plasmon-modified luminescence near nanospheres. in Colloidal Nanocrystals for Biomedical Applications VIII. vol. 8595, 859508, Colloidal Nanocrystals for Biomedical Applications VIII, San Francisco, CA, United States, 2/2/13. https://doi.org/10.1117/12.2004164
Zhang Z, Lim D, Diaz R. Image theory for plasmon-modified luminescence near nanospheres. In Colloidal Nanocrystals for Biomedical Applications VIII. Vol. 8595. 2013. 859508 https://doi.org/10.1117/12.2004164
Zhang, Zhe ; Lim, Derrick ; Diaz, Rodolfo. / Image theory for plasmon-modified luminescence near nanospheres. Colloidal Nanocrystals for Biomedical Applications VIII. Vol. 8595 2013.
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AB - We present a quasi-static model of the electromagnetic interaction between dipolar emitting molecule and a Plasmon-metal nano-sphere. Based on the image theory of dielectric sphere, we model the Plasmon nano-spheres by off-centered dipole images. The retardation effect is taken into account by electrodynamical modifications on spherical polarizability and dipole radiation field. The modifications of the radiative rate, total decay rate and the quantum yield for the molecules are derived. The image model indicates the strong distance dependence of the enhancement on both radiative and total decay rates. The comparison with the exact electrodynamical model and other simplified models indicate that the off-center image provide accurate predictions on radiative and total decay rates, even in close distances.

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