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Updated: May 18, 2026

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
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Published on: December 11, 2013

Nanowire antenna emission.

Grzegorz Grzela1, Ramón Paniagua-Domínguez, Tommy Barten

  • 1FOM Institute for Atomic and Molecular Physics (AMOLF), c/o Philips Research, High-Tech Campus 4, 5656 AE Eindhoven, The Netherlands. grzela@amolf.nl

Nano Letters
|October 4, 2012
PubMed
Summary

We show that semiconductor nanowires act as optical nanoantennas, controlling light emission directionality. Their geometry and dimensions, influenced by leaky modes and Mie resonances, are key to optimizing light sources.

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Area of Science:

  • Optoelectronics
  • Nanophotonics
  • Materials Science

Background:

  • Semiconductor nanowires are promising for light emission applications.
  • Controlling the directionality and efficiency of light emission from nanowires is crucial.

Purpose of the Study:

  • To experimentally demonstrate and quantify the directional emission of polarized light from single semiconductor nanowires.
  • To investigate the role of nanowire geometry and dimensions in dictating emission characteristics.

Main Methods:

  • Fourier microphotoluminescence measurements were used to determine emission directionality.
  • Finite element simulations were employed to model radiated power and analyze leaky modes.
  • Vertically oriented Indium Phosphide (InP) nanowires were used as the experimental platform.

Main Results:

  • Nanowires function as efficient optical nanoantennas, with emission influenced by material, geometry, and dimensions.
  • Radiated power is enhanced at frequencies and diameters supporting leaky modes, linked to Mie resonances.
  • Emission can be inhibited by detuning frequencies or unfavorable coupling to resonances.

Conclusions:

  • Nanowire geometry and dimensions significantly impact light emission directionality and efficiency.
  • Understanding leaky modes and Mie resonances allows for the design of optimized nanowire photon sources.
  • These findings are relevant for developing advanced nanowire-based optoelectronic devices.