红外与毫米波学报2018，Vol.37Issue(5)：533-539,7.DOI:10.11972/j.issn.1001-9014.2018.05.005
基于局部表面等离子体激元的共振增强超材料吸收器的吸收性质
Enhance absorption based on the resonance of localized surface plasmon modes in a metamaterial absorber
摘要
Abstract
In this paper,we present a single peak absorption characteristic of high performance metamaterial absorber in 150 ～ 165 THz region.The designed absorber contains two arrays:a dual metallic particles array and a dual air holes array.The damping constant of metal layer is optimized in simulations.It is found that the maximum absorption rate 96％ can be obtained when using 2.3 times of damping constant in simulations.The absorption peak is excited by the localized surface plasmon (LSP) modes resonance.In order to reveal the resonant electromagnetic mechanism and research the effects of structural parameters variations on the resonant absorption peak,two sets of simulations were carried out.It was found that with increasing the vertical distance V,the absorption peak is enhanced and a new absorption band is achieved when V =160 nm.In the second simulations,for the increase in horizontal distance H,the absorption peak is also enhanced and another new absorption band is achieved when H =190 nm.Electric field intensity distribution results show the excitation of LSP modes and the coupling effect between LSP modes lead to the absorption peak enhanced phenomenon.关键词
超材料/吸收峰/金属颗粒Key words
metamaterials/absorption peaks/metal particles分类
数理科学引用本文复制引用
张振亚,刘晓丽,温小栋..基于局部表面等离子体激元的共振增强超材料吸收器的吸收性质[J].红外与毫米波学报,2018,37(5):533-539,7.基金项目
Supported by the Public Welfare Technology Research Project of Zhejiang Province (2014C31042),National Natural Science Foundation of China (51569035),the Natural Science Foundation of Zhejiang province,China (LY15E080014),preparatory funds of School of Architecture and Transportation,Ningbo university of technology,Open Research Fund Program of State key Laboratory of Hydroscience and Engineering （2014C31042）
