Local-field confinement in three-pair arrays of metallic nanocylinders

Ming Yaw Ng, Wei-Chih Liu

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Confinement of light in nano-scale region of three silver nanocylinder pairs is studied by finite-difference time-domain simulations. Light is confined in gaps between nanocylinders due to localized plasmon excitation and the strongest local-field enhancement exhibits in the gap of the second pair. The surface plasmon resonance has red-shift for nanocylinders of larger radius. The resonance wavelength and local-field enhancement are nearly proportional to the radius of nanocylinders in visible light region, i.e., the plasmon resonance of nanocylinder pairs is predictable and controllable. An open cavity model is proposed to understand the linear relation between the resonant wavelength and the radius of nanocylinders.

Original languageEnglish
Pages (from-to)4504-4513
Number of pages10
JournalOptics Express
Volume14
Issue number10
DOIs
Publication statusPublished - 2006 Jan 1

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radii
augmentation
surface plasmon resonance
wavelengths
red shift
silver
cavities
excitation
simulation

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Local-field confinement in three-pair arrays of metallic nanocylinders. / Ng, Ming Yaw; Liu, Wei-Chih.

In: Optics Express, Vol. 14, No. 10, 01.01.2006, p. 4504-4513.

Research output: Contribution to journalArticle

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