Surface plasmon resonance in metallic nanocylinder array

Tai Chi Chu, Din Ping Tsai, Wei Chih Liu

Research output: Contribution to journalArticle

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
Pages (from-to)S194-S199
JournalJournal of the Korean Physical Society
Volume47
Issue numberSUPPL. 1
Publication statusPublished - 2005 Aug

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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