Near-Infrared Properties of Hybridized Plasmonic Rectangular Split Nanorings  

作　　者：廖中伟 黄映洲 王小勇 周洋洋 王蜀霞 温维佳 

机构地区：[1]Soft Matter and Interdisciplinary Research Institute, College of Physics, Chongqing University, Chongqing 401331 [2]Department of Applied Physics, College of Physics, Chongqing University, Chongqing 401331 [3]Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong

出　　处：《Chinese Physics Letters》2014年第6期219-222,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 11204390, the Fundamental Research Funds for the Central Universities under Grant No CQDXWL-2013-009, and the Special Fund for Agro-scientific Research in the Public Interest under Grant No 201303045.

摘　　要：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.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.

分 类 号：O657.33[理学—分析化学] P282.1[理学—化学]