Localized spoof plasmons in closed textured cavities

被引：31
|
作者：
Li, Zhuo [1 ]
Xu, Bingzheng [1 ]
Gu, Changqing [1 ]
Ning, Pingping [1 ]
Liu, Liangliang [1 ]
Niu, Zhenyi [1 ]
Zhao, Yongjiu [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Elect & Informat Engn, Minist Educ, Key Lab Radar Imaging & Microwave Photon, Nanjing 210016, Jiangsu, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 25期
关键词：
SURFACE-PLASMONS; ULTRATHIN;
D O I：
10.1063/1.4885046
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Localized spoof plasmons arising with textured closed surfaces have been theoretically studied and experimentally verified, which resemble the localized surface plasmons (LSPs) in the optical regime. In this work, we go one step further and demonstrate that part of the resonance modes in closed textured cavities pertain to spoof localized surface plasmons (spoof-LSPs) modes. We show the existence of spoof LSPs in periodically textured perfect electric conductor circular cavities and make an analogy between these spoof LSPs and the real LSPs in closed metallic cavities with the Drude model in the optical regime. Also, a metamaterial approach is presented to capture the resonant features of these modes. (C) 2014 AIP Publishing LLC.
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页数：4
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