Near-Infrared Properties of Hybridized Plasmonic Rectangular Split Nanorings

The near-infrared properties of gold rectangular split nanorings （RSNs） are investigated by simulation using the finite element method. In the results, the distribution and enhancement of electromagnetic （EM） fields are confirmed by the distribution of charge and current density. The spectrum variat...

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Bibliographic Details
Published in:Chinese physics letters 2014-06, Vol.31 (6), p.219-222
Main Author: 廖中伟 黄映洲 王小勇 周洋洋 王蜀霞 温维佳
Format: Article
Language:English
Subjects:
Charge
Computer simulation
Current density
Devices
Medical devices
Nanostructure
Optical trapping
Plasmonics
性质
有限元方法
杂交原理
电浆
矩形分割
纳米环
表面等离子体共振
近红外
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Summary:The near-infrared properties of gold rectangular split nanorings （RSNs） are investigated by simulation using the finite element method. In the results, the distribution and enhancement of electromagnetic （EM） fields are confirmed by the distribution of charge and current density. The spectrum variation with split distance of RSNs in absorption is in accordance with the hybridization theory. The influence of split distance and light wavelength on the enhancement of EM field is also studied for devices that make use of surface plasmon resonance in nearinfrared, such as in optical trapping, biomedicine, and solar energy. Additionally, the spectra in mediums with various refractive indices suggest the potential application of the hybridized plasmonic RSNs as an ultra-sensitive sensor in the near-infrared region.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/31/6/067803