Graphene-Based Tunable Polarization Insensitive Dual-Band Metamaterial Absorber at Mid-Infrared Frequencies

被引：0

作者：

张玉萍 ^{[1
]}

李彤彤 ^{[1
]}

吕欢欢 ^{[1
]}

黄晓燕 ^{[1
]}

张晓 ^{[1
]}

徐世林 ^{[1
]}

张会云 ^{[1
]}

机构：

[1] Qingdao Key Laboratory of Terahertz Technology,College of Electronic Communication and Physics,Shandong University of Science and Technology

来源：

Chinese Physics Letters | 2015年 / 06期

基金：

中国国家自然科学基金;

关键词：

ab; Graphene-Based Tunable Polarization Insensitive Dual-Band Metamaterial Absorber at Mid-Infrared Frequencies;

D O I：

暂无

中图分类号：

TB39 [其他材料]; O613.71 [碳C];

学科分类号：

070301 ; 0805 ; 080502 ; 081704 ;

摘要：

A graphene-based tunable dual-band metamaterial absorber which is polarization insensitive is numerically proposed at mid-infrared frequencies.In numerical simulation the metamaterial absorber exhibits two absorption peaks at the resonance wavelengths of 6.246 μm and 6.837 μm when the Fermi level of graphene is fixed at 0.6 eV.Absorption spectra at different Fermi levels of graphene are displayed and tuning functions are discussed in detail.Both the resonance wavelengths of the absorber blue shift with the increase in Fermi level of graphene.Moreover,the surface current distributions on the gold resonator and ground plane at the two resonance wavelengths are simulated to deeply understand the physical mechanism of resonance absorption.

引用

页码：173 / 176

页数：4

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张晓
徐世林
张会云
[J]. Chinese Physics Letters., 2015, 32 (06) - 176
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