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Updated: May 24, 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

Teardrop-shaped surface-plasmon resonators.

Majid Rasouli Disfani1, Mohammad Sadegh Abrishamian, Pierre Berini

  • 1Department of Electrical and Computer Eng., K. N. Toosi University of Technology, Tehran 1413714191, Iran.

Optics Express
|March 16, 2012
PubMed
Summary
This summary is machine-generated.

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A novel teardrop-shaped surface plasmon resonator demonstrates sharp resonance and high sensitivity. This metal nanostructure offers significantly enhanced performance for biosensing applications.

Area of Science:

  • Photonics and Nanotechnology
  • Plasmonics
  • Sensing Technologies

Background:

  • Surface plasmon resonance (SPR) is a label-free optical sensing technique.
  • Existing SPR sensors often face limitations in sensitivity and figure-of-merit.
  • Metal nanostructures offer tunable optical properties for enhanced sensing.

Purpose of the Study:

  • To propose and model a novel teardrop-shaped surface plasmon resonator.
  • To investigate the optical properties and resonant behavior of the proposed structure.
  • To evaluate its potential for high-performance biosensing applications.

Main Methods:

  • Numerical modeling using hypersingular integral equations.
  • Simulation of TM-polarized light interaction with the teardrop structure.

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Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials
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Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials

Published on: March 23, 2017

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Last Updated: May 24, 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

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
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Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials

Published on: March 23, 2017

  • Analysis of surface plasmon excitation, interference, and resonant modes.

    • Main Results:

    • Excitation of counter-propagating surface plasmons leading to sharp resonance (~0.6 nm line-width) and high quality factors (~3400).
    • Demonstration of high bulk sensitivity (~1900 nm/RIU) and figure-of-merit (~1700) in water for a gold teardrop.
    • Observation of Fano-like line-shapes in the scattering cross-section near resonance.

    Conclusions:

    • The teardrop surface plasmon resonator exhibits superior performance compared to conventional structures like nano-spheres.
    • The proposed design shows significant potential as a high-quality resonator and a sensitive biosensing element.
    • This nanostructure could advance the development of next-generation sensing devices.