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Related Experiment Video

Updated: Jun 25, 2026

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

Optical performance and metallic absorption in nanoplasmonic systems.

Matthew D Arnold1, Martin G Blaber

  • 1Institute for Nanoscale Technology, Department of Physics and Applied Materials, University of Technology Sydney,PO Box 123 Broadway, NSW 2007, Australia. Matthew.Arnold-1@uts.edu.au

Optics Express
|March 5, 2009
PubMed
Summary
This summary is machine-generated.

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Choosing the right metal for plasmonic applications depends on performance needs. Aluminum excels in low permittivity scenarios, while gold and silver are better for very negative permittivities, with alkali metals offering broad utility despite engineering hurdles.

Area of Science:

  • Nanophotonics
  • Materials Science
  • Plasmonics

Background:

  • Plasmonic systems utilize collective oscillations of electrons in metals to manipulate light.
  • Optimizing plasmonic performance requires careful selection of metallic materials based on their optical properties.
  • Understanding the relationship between metal permittivity and plasmonic behavior is crucial for device design.

Purpose of the Study:

  • To survey optical metrics of metallic absorption in plasmonic systems.
  • To develop heuristics for optimizing plasmonic performance across various applications.
  • To compare the suitability of different metals, including aluminum, copper, silver, gold, lithium, sodium, and potassium, for plasmonic applications.

Main Methods:

  • Analyzing optical metrics related to metallic absorption.

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Last Updated: Jun 25, 2026

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

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
15:06

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

Published on: September 27, 2011

  • Using the real part of permittivity as the primary independent variable.
  • Evaluating particle resonances, planar lens resolving power, and planar waveguide guiding lengths.
  • Comparing nearly-free-electron metals: Al, Cu, Ag, Au, Li, Na, K.

    • Main Results:

    • The imaginary part of metal permittivity significantly impacts damping, but field distribution, geometry, real permittivity, and frequency are also critical factors.
    • Aluminum (Al) demonstrates strong performance at low permittivities, suitable for sphere resonances and superlenses.
    • Gold (Au) and silver (Ag) excel at very negative permittivities, ideal for shell and rod resonances, and long-range surface plasmon polaritons (LRSPP).
    • Alkali metals offer excellent overall performance but pose engineering challenges.

    Conclusions:

    • Metal selection for plasmonic applications requires a nuanced approach considering multiple optical and physical parameters.
    • Heuristics for optimizing plasmonic performance can be developed by understanding the interplay between metal permittivity, geometry, and frequency.
    • While Al, Au, and Ag have specific optimal regimes, alkali metals present a promising, albeit challenging, alternative for broad plasmonic applications.