| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Near-Infrared Properties of Hybridized Plasmonic Rectangular Split Nanorings |
| LIAO Zhong-Wei1,2, HUANG Ying-Zhou1,2**, WANG Xiao-Yong1,2**, CHAU Irene Yeung-Yeung3, WANG Shu-Xia1,2, WEN Wei-Jia3 |
1Soft Matter and Interdisciplinary Research Institute, College of Physics, Chongqing University, Chongqing 401331
2Department of Applied Physics, College of Physics, Chongqing University, Chongqing 401331
3Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
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| Cite this article: |
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LIAO Zhong-Wei, HUANG Ying-Zhou, WANG Xiao-Yong et al 2014 Chin. Phys. Lett. 31 067803 |
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Abstract 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 near-infrared, 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.
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Published: 26 May 2014
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| PACS: |
78.67.Pt
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(Multilayers; superlattices; photonic structures; metamaterials)
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81.05.Xj
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(Metamaterials for chiral, bianisotropic and other complex media)
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73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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