Tunable composite nanoparticle for plasmonics
Tunable composite nanoparticle for plasmonics
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DOI：
10.1364/ol.31.002750
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发表时间：
2006-09-15
期刊：
影响因子：
3.6
通讯作者：
Martin, Olivier J. F.
中科院分区：
文献类型：
--
作者：
Leveque, Gaeetan;Martin, Olivier J. F.
我们提出了一个数值研究的等离子体亚波长粒子沉积在金属板的可调谐性。粒子由金属部分组成，支持局部等离子体激元模式，通过介电间隔物与板分离。它示出的谐振波长的位置可以被修改在一个大的光谱范围内，通过改变间隔物的厚度由几十纳米或其磁化率在通常的范围内的范围内。谐振波长与间隔层的介电常数呈线性关系。(c)2006年美国光学学会。
We present a numerical study of the tunability properties of a plasmonic subwavelength particle deposited on a metallic slab. The particle is composed of a metallic part, supporting a localized plasmon mode, separated from the slab by a dielectric spacer. It is shown that the position of the resonance wavelength can be modified over a large spectral range by changing either the spacer thickness by a few tens of nanometers or its susceptibility within the range of usual dielectrics. A linear relation is observed between the resonance wavelength and the spacer permittivity. (c) 2006 Optical Society of America.