The Optical Properties of Dual-Wavelength InxGa1-xN/GaN Nanorods for Wide...
Research progress of low-dimensional semiconductor materials in field of ...
Spin Polarization Compensation in Ferrimagnetic Co1-xTbx/Pt Bilayers Reve...
Polarization Manipulated Fourier Domain Mode-Locked Optoelectronic Oscill...
Magnetic characterization of a thin Co2MnSi/L1(0)-MnGa synthetic antiferr...
Special Issue on Microwave Photonics
Symmetry Breaking in Monometallic Nanocrystals toward Broadband and Direc...
Application of graphene nanowalls in an intraocular pressure sensor
Photonic Image-free Mixer Based on a Dual-Parallel Mach-Zehnder Modulator...
Compact Low-Loss Optical 72 degrees Hybrid Based on Nonoverlapping-Image ...

Dual-band tunable perfect absorber based on monolayer graphene pattern


Author(s): Ke, RJ (Ke, Rujiao); Liu, W (Liu, Wen); Tian, JP (Tian, Jinping); Yang, RC (Yang, Rongcao); Pei, WH (Pei, Weihua)

Source: RESULTS IN PHYSICS Volume: 18 Article Number: 103306 DOI: 10.1016/j.rinp.2020.103306 Published: SEP 2020

Abstract: In this paper, we propose a metamaterial perfect absorber (MPA), which is a three-layer structure composed of a periodically placed "(sic)" type graphene array on top of a gold layer separated by a SiO2 dielectric spacer, to achieve dual band perfect absorption. The absorption mechanism is analyzed, and the simulation results show that at the frequencies of 5.16 THz and 10.30 THz, the absorption rates are as high as 99.7% and 99.6%, respectively. In addition, the absorber is insensitive to the polarization of the incident wave and has a good tolerance to the incident angle. Moreover, the position and peak absorption of the absorber can be adjusted flexibly by changing the structure parameters and the Fermi level mu(c) of graphene. In addition, the position of absorption frequency is sensitive to the surrounding medium, so the proposed MPA has potential applications in the field of refractive sensor. This paper provides a new idea for the design of tunable dual-band ideal terahertz absorber. Because of its good performance, the proposed absorber has a wide range of application prospects in terahertz and mid-infrared optical filter, optical sensor, and radiation thermal imaging, stealth and communication fields.

Accession Number: WOS:000577356300009

ISSN: 2211-3797

Full Text:


北京市海淀區清華東路甲35號 北京912信箱 (100083)




版權所有 中國科學院半導體研究所

備案號:京ICP備05085259號 京公網安備110402500052 中國科學院半導體所聲明

打杭州麻将的app有哪些 14场投注技巧 江西多乐彩出号走势图 海南飞鱼历史开奖 宁夏11选5走势分析 比特币现金新闻 水果派对超级彩金游戏怎么玩 七星彩票软件 六合彩最新最快 浙江体彩6+1历史开奖结果查询果 百家乐代理_Welcome 泳坛夺金开奖 企业文化包括哪些内容 比特币莱特币交易平台 美女麻将4399小游戏 17300体育彩票开奖号码 ag视讯在哪里玩靠谱