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Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
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Shape matters: plasmonic nanoparticle shape enhances interaction with dielectric substrate.

Pablo Albella1, Borja Garcia-Cueto, Francisco González

  • 1Grupo de Óptica, Departamento Física Aplicada, Universidad de Cantabria, 39005 Santander, Spain.

Nano Letters
|August 19, 2011
PubMed
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Gallium nanostructure plasmonic spectra are sensitive to illumination angle and polarization. Nanoparticle size, shape, and substrate interactions influence these spectral properties, particularly for hemispherical gallium nanoparticles.

Area of Science:

  • Plasmonics
  • Nanophotonics
  • Materials Science

Background:

  • Gallium nanostructures exhibit unique plasmonic properties.
  • Understanding their optical response is crucial for nanophotonic applications.

Purpose of the Study:

  • To investigate the sensitivity of plasmonic spectra in hemispherical gallium nanostructures.
  • To analyze the influence of illumination angle, polarization, size, shape, and substrate on spectral features.

Main Methods:

  • Numerical analysis of ultraviolet and visible plasmonic spectra.
  • Modeling of hemispherical gallium nanostructures on dielectric substrates.

Main Results:

  • Resonance frequencies show high sensitivity to illumination angle and polarization.

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Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
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Published on: September 27, 2011

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

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Last Updated: May 30, 2026

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
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Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

Published on: January 3, 2016

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

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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

  • Broken symmetry in hemispherical nanoparticles on sapphire induces large, polarization-dependent spectral splittings.
  • Strong substrate interactions are dependent on illumination angle and nanoparticle diameter.

    • Conclusions:

    • The optical response of gallium nanostructures is tunable via external parameters.
    • These findings are relevant for designing advanced plasmonic devices and sensors.