期刊
PLASMONICS
卷 8, 期 2, 页码 755-761出版社
SPRINGER
DOI: 10.1007/s11468-012-9469-7
关键词
Plasmonic nanoantenna; Finite element method; Localized surface plasmon resonance
资金
- National Science Council of the Republic of China (Taiwan) [NSC 99-2112-M-231-001-MY3, NSC 101-3113-P-002-021-, NSC-100-2632-E-231-001-MY3]
We propose a new design of a plasmonic nanoantenna and numerically study its optical properties by means of the 3D finite element method. The nanoantenna is composed of two identical castle-like contour nanometal-filled dielectric media inside the hollows. We examine the influence of the contour thickness, gap width, and dielectric media filled inside the hollows on the antenna resonance conditions. Through these simulations, we show that it is possible to tune an antenna with a constant length over a broad spectral range (ranging in ultraviolet-visible, visible light, and infrared light).
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