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Related Experiment Video

Updated: May 15, 2026

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
07:39

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Published on: July 21, 2018

Plasmonic halos--optical surface plasmon drumhead modes.

Fan Ye1, Michael J Burns, Michael J Naughton

  • 1Department of Physics, Boston College, 140 Commonwealth Avenue, Chestnut Hill, Massachusetts 02467, USA. fan.ye@bc.edu

Nano Letters
|December 20, 2012
PubMed
Summary
This summary is machine-generated.

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Researchers discovered a new "plasmonic halo" effect using silver microcavities. This phenomenon generates colorful light from the edges of these nanostructures, with potential uses in optics and medicine.

Area of Science:

  • Nanophotonics and Plasmonics
  • Optical Engineering

Background:

  • Surface plasmons are collective oscillations of electrons on metal surfaces.
  • Microcavities can confine and manipulate light-matter interactions.

Purpose of the Study:

  • To observe and characterize a novel optical phenomenon termed the "plasmonic halo".
  • To investigate the generation mechanism of the plasmonic halo using circular silver microcavities with step gaps.
  • To explore the potential applications of this effect in optical devices.

Main Methods:

  • Experimental observation of the plasmonic halo effect.
  • Theoretical modeling and simulation of surface plasmon excitation and propagation.
  • Fabrication and characterization of circular silver microcavities with varying geometric and material parameters.

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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

Performing Spectroscopy on Plasmonic Nanoparticles with Transmission-Based Nomarski-Type Differential Interference Contrast Microscopy
08:54

Performing Spectroscopy on Plasmonic Nanoparticles with Transmission-Based Nomarski-Type Differential Interference Contrast Microscopy

Published on: June 5, 2019

Related Experiment Videos

Last Updated: May 15, 2026

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
07:39

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Published on: July 21, 2018

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

Performing Spectroscopy on Plasmonic Nanoparticles with Transmission-Based Nomarski-Type Differential Interference Contrast Microscopy
08:54

Performing Spectroscopy on Plasmonic Nanoparticles with Transmission-Based Nomarski-Type Differential Interference Contrast Microscopy

Published on: June 5, 2019

Main Results:

  • Demonstration of confined drumhead surface plasmon modes on circular silver microcavities.
  • Observation of colorful far-field radiation emanating from the perimeter of microcavities under resonant conditions.
  • Confirmation that perimeter step gaps are crucial for generating surface plasmon cavity modes and the plasmonic halo effect.

Conclusions:

  • The plasmonic halo is a novel optical phenomenon arising from surface plasmon cavity modes in engineered microcavities.
  • The effect can be tuned by adjusting geometric and material parameters, offering control over optical properties in the visible spectrum.
  • Potential applications include advanced biomedical plasmonics and discrete optical filtering devices.