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Updated: May 13, 2026

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Directional visible light scattering by silicon nanoparticles.

Yuan Hsing Fu1, Arseniy I Kuznetsov, Andrey E Miroshnichenko

  • 1Data Storage Institute, Advanced Concepts and Nanotechnology Division, 5 Engineering Drive 1, Singapore 117608, Singapore. FU_Yuan_Hsing@dsi.a-star.edu.sg

Nature Communications
|February 28, 2013
PubMed
Summary

Researchers demonstrate directional light scattering from silicon nanoparticles for the first time. These nanoparticles exhibit tunable scattering properties, paving the way for advanced optical devices.

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Area of Science:

  • Nanophotonics
  • Metamaterials
  • Optical Engineering

Background:

  • Theoretical predictions of Kerker's-type scattering by magneto-dielectric particles date back three decades.
  • Silicon nanoparticles offer unique optical properties due to their dielectric nature.

Purpose of the Study:

  • To experimentally demonstrate directional light scattering from spherical silicon nanoparticles in the visible spectrum.
  • To investigate the dependence of scattering directivity on nanoparticle size and light wavelength.

Main Methods:

  • Fabrication and characterization of spherical silicon nanoparticles.
  • Experimental measurement of far-field radiation patterns for single nanoparticles.
  • Analysis of light scattering properties in the visible spectral range.

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Last Updated: May 13, 2026

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Main Results:

  • First experimental demonstration of directional light scattering by silicon nanoparticles.
  • Observed simultaneous excitation and interference of magnetic and electric dipole resonances.
  • Achieved forward-to-backward scattering ratios above six for nanoparticles (100-200 nm), akin to 'Huygens' sources.
  • Demonstrated strong dependence of scattering directivity on wavelength and size.

Conclusions:

  • Silicon nanoparticles exhibit unique 'Huygens' source-like scattering behavior.
  • These findings enable the development of novel low-loss metamaterials and nanoantennas.
  • Potential applications in visible and telecom spectral ranges.