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Related Experiment Video

Updated: Jul 4, 2026

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
09:29

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation

Published on: September 27, 2011

Refracting surface plasmon polaritons with nanoparticle arrays.

Ilya P Radko1, Andrey B Evlyukhin, Alexandra Boltasseva

  • 1Department of Physics and Nanotechnology, Aalborg University, Skjernvej 4A, DK-9220Aalborg Øst, Denmark. ilya@nano.aau.dk

Optics Express
|June 11, 2008
PubMed
Summary

Surface plasmon polaritons (SPPs) can be precisely controlled using gold nanoparticle arrays. These structures enable manipulation of SPP refraction, focusing, and waveguiding for advanced photonic applications.

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Area of Science:

  • Plasmonics
  • Nanophotonics
  • Optics

Background:

  • Surface plasmon polaritons (SPPs) are light coupled to electron oscillations on metal surfaces.
  • Controlling SPP propagation is crucial for miniaturized optical devices.
  • Nanoparticle arrays offer a tunable platform for manipulating SPPs.

Purpose of the Study:

  • To investigate the refraction of SPPs by gold nanoparticle arrays.
  • To determine the effective refractive index of SPPs within these arrays.
  • To explore the potential for designing nanoparticle structures for SPP manipulation.

Main Methods:

  • Leakage radiation microscopy was employed to study SPP behavior.
  • Experiments involved 100-nm-period square lattices of gold nanoparticles on a gold film.

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Last Updated: Jul 4, 2026

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
09:29

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation

Published on: September 27, 2011

Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics
09:12

Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics

Published on: May 28, 2016

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  • Green's tensor formalism was used for theoretical modeling.

    • Main Results:

    • SPP refraction by triangular arrays showed an effective refractive index increase of ~1.08 at 800 nm.
    • SPP focusing, deflection, and waveguiding were observed in circular and rectangular arrays.
    • The SPP refractive index slightly decreased for wavelengths longer than 700 nm.

    Conclusions:

    • Gold nanoparticle arrays can effectively alter the SPP refractive index.
    • The experimental findings align well with theoretical modeling.
    • This research enables the design of nanostructures for specific in-plane SPP manipulation applications.