Tunable and Anisotropic Dual-Band Metamaterial Absorber Using Elliptical Graphene-Black Phosphorus Pairs

被引：22

作者：

Cai, Yijun ^{[1
]}

Li, Shuangluan ^{[2
]}

Zhou, Yuanguo ^{[2
]}

Wang, Xuanyu ^{[1
]}

Xu, Kai-Da ^{[3
]}

Guo, Rongrong ^{[1
]}

Joines, William T. ^{[4
]}

机构：

[1] Xiamen Univ Technol, Fujian Prov Key Lab Optoelect Technol & Devices, Xiamen 361024, Fujian, Peoples R China

[2] Xian Univ Sci & Technol, Coll Commun & Informat Engn, Xian 710054, Shaanxi, Peoples R China

[3] Univ Wisconsin, Dept Elect & Comp Engn, 1415 Johnson Dr, Madison, WI 53706 USA

[4] Duke Univ, Dept Elect & Comp Engn, Durham, NC 27708 USA

来源：

NANOSCALE RESEARCH LETTERS | 2019年 / 14卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Metamaterial absorber; Two-dimensional material; Dual-band absorber; Surface plasmons; SURFACE-PLASMONS; SATURABLE ABSORBER; WAVE-GUIDE; PERFORMANCE;

D O I：

10.1186/s11671-019-3182-9

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We numerically propose a dual-band absorber in the infrared region based on periodic elliptical graphene-black phosphorus (BP) pairs. The proposed absorber exhibits near-unity anisotropic absorption for both resonances due to the combination of graphene and BP. Each of the resonances is independently tunable via adjusting the geometric parameters. Besides, doping levels of graphene and BP can also tune resonant properties effectively. By analyzing the electric field distributions, surface plasmon resonances are observed in the graphene-BP ellipses, contributing to the strong and anisotropic plasmonic response. Moreover, the robustness for incident angles and polarization sensitivity are also illustrated.

引用

页数：7

共 30 条

[1] Anisotropic infrared plasmonic broadband absorber based on graphene-black phosphorus multilayers [J].