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

Ming Yaw Ng, Wei-Chih Liu

研究成果: 雜誌貢獻文章同行評審

11 引文 斯高帕斯(Scopus)

摘要

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.

原文英語
頁(從 - 到)4504-4513
頁數10
期刊Optics Express
14
發行號10
DOIs
出版狀態已發佈 - 2006 一月 1

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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