Metamaterial-based perfect absorber: polarization insensitivity and broadband

被引：26

作者：

Thi Hien Nguyen ^{[1
]}

Son Tung Bui ^{[1
]}

Trong Tuan Nguyen ^{[1
]}

Thanh Tung Nguyen ^{[2
]}

Lee, YoungPak ^{[3
,4
]}

Manh An Nguyen ^{[5
]}

Dinh Lam Vu ^{[1
]}

机构：

[1] Vietnam Acad Sci & Technol, Inst Mat Sci, Hanoi, Vietnam

[2] Katholieke Univ Leuven, Dept Phys & Astron, Lab Solid State Phys & Magnetism, B-3001 Leuven, Belgium

[3] Hanyang Univ, Quantum Photon Sci Res Ctr, Seoul 133791, South Korea

[4] Hanyang Univ, Dept Phys, Seoul 133791, South Korea

[5] Hong Duc Univ, Dong Son, Thanh Hoa, Vietnam

来源：

ADVANCES IN NATURAL SCIENCES-NANOSCIENCE AND NANOTECHNOLOGY | 2014年 / 5卷 / 02期

关键词：

metamaterials; perfect metamaterial absorber; broadband metamaterial absorber; REFRACTION;

D O I：

10.1088/2043-6262/5/2/025013

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report the design and simulation of a microwave metamaterials-based perfect absorber using a simple and highly symmetric structure. The basic structure consists of three functional layers: the middle is a dielectric, the back is a metallic plane and the front is a ring of metal. The influence of structural parameters on the absorbance and absorption frequency were investigated. The results show an exceptional absorption performance of near unity around 16 GHz. In addition, the absorption is insensitive to the polarization of the incident beam due to the highly symmetric structure. Finally, four and nine rings with different sizes are arranged appropriately in a unit cell in order to construct a broadband absorber. A polarization-insensitive absorbance of above 90% is achieved over a bandwidth of 15%.

引用

页数：7

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