Surface plasmon resonance in metallic nanocylinder array

Tai Chi Chu, Din Ping Tsai, Wei-Chih Liu

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3 Citations (Scopus)

Abstract

Localized surface plasmon resonances of noble-metal nanoparticles lead to high enhancements of local electromagnetic fields near the nanoparticle surface and play a key role in surface-enhanced Raman scattering, surface-enhanced fluorescence, near-field microscopy, and plasmonic devices. Recently, research results have shown that electromagnetic energy can transfer along a metallic nanoparticle chain because of coupled plasmon modes. In this paper, finite-difference time-domain method was used to study the surface plasmon resonances in coupled silver nanocylinder (nanoparticle) arrays and slab-like periodic modulation structures. From the far-field transmittance and reflectance, three different resonance modes were excited for the periodic nanocylinder arrays and only one resonance was excited for the periodic modulation structure. The near-field intensity distributions exhibited highly enhanced fields at the center of the gaps for nanoparticle arrays and at the caves of the periodic modulation structure.

Original languageEnglish
JournalJournal of the Korean Physical Society
Volume47
Issue numberSUPPL. 1
Publication statusPublished - 2005 Aug 1

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Keywords

  • Finite-difference time-domain method
  • Metallic nanocylinder array
  • Metallic nanoparticle
  • Surface plasmon

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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