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Updated: Jun 14, 2026

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
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Propagating surface plasmon resonance on microhole arrays.

Ludovic S Live1, Olivier R Bolduc, Jean-François Masson

  • 1Département de Chimie, Université de Montréal, Qc, Canada H3C 3J7.

Analytical Chemistry
|April 2, 2010
PubMed
Summary

Novel microhole arrays enhance plasmonic properties for improved biosensing. These microplasmonic structures offer higher sensitivity and resolution than conventional thin films, showing great potential for surface plasmon resonance (SPR) sensing platforms.

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Area of Science:

  • Plasmonics
  • Nanotechnology
  • Biosensing

Background:

  • Metallic thin films with patterned microstructures exhibit enhanced plasmonic properties compared to conventional thin films.
  • These properties can be tuned by altering the physical characteristics of the microplasmonic structures.

Purpose of the Study:

  • To investigate the relationship between physical aspects and optical properties of microplasmonic structures.
  • To develop improved surface plasmon resonance (SPR) sensing platforms.

Main Methods:

  • Modified nanosphere lithography (NSL) was used to prepare triangular and microhole arrays with varying dimensions.
  • Optical properties including sensitivity, refractive index range, spectral width, noise, and resolution were analyzed.

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Main Results:

  • Microhole arrays with a specific diameter-to-periodicity ratio combined localized surface plasmon resonance (LSPR) and SPR advantages.
  • These arrays demonstrated high refractive index sensitivity (>3000 nm/RIU), improved monolayer detection (2-fold), and excellent resolution (10^-6 RIU).
  • A biosensor using these materials showed a greater response for immunoglobulin G (IgG) detection compared to traditional gold films.

Conclusions:

  • The developed microplasmonic materials show significant potential as advanced SPR sensing platforms.
  • These materials are compatible with existing instrumentation and detection protocols.
  • They offer enhanced performance for biosensing applications.