scholarly journals A broadband terahertz metamaterial absorber enabled by the simple design of a rectangular-shaped resonator with an elongated slot

2019 ◽  
Vol 1 (9) ◽  
pp. 3621-3625 ◽  
Author(s):  
Ben-Xin Wang ◽  
Chao Tang ◽  
Qingshan Niu ◽  
Yuanhao He ◽  
Runye Chen
Keyword(s):  
Metamaterial Absorber ◽  
Simple Design ◽  
Critical Importance ◽  
Practical Applications ◽  
Metamaterial Absorbers ◽  
Broadband Terahertz

Broadband metamaterial absorbers are of critical importance in practical applications, but their obtainment approaches are quite complex at present.

scholarly journals Broadband Bi-Directional Polarization-Insensitive Metamaterial Absorber

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7339
Author(s):  
Feng Tian ◽  
Xia Ma ◽  
Han Hao ◽  
Xuewen Li ◽  
Jingdao Fan ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Impedance Matching ◽  
Middle Layer ◽  
Metamaterial Absorber ◽  
Metal Plate ◽  
Equivalent Circuits ◽  
Practical Applications ◽  
Polarization Insensitive ◽  
Absorption Performance ◽  
Metamaterial Absorbers

Conventional metamaterial absorbers eliminate the transmitted electromagnetic wave by attaching the metal plate with the unidirectional absorption performance; these absorbers limit the practical applications to a large extent. In this paper, we present a broadband bi-directional metamaterial absorber by etching chip resistors on the resonators for expanding the bandwidth, and two orthogonal I-shaped structures are pasted on the both sides of the ultra-thin substrate (FR-4) instead of the metal plate for enhancing absorptance of the absorber. Simulated results show that absorptance of the designed absorber is larger than 0.9 in 1.43–2.51 GHz along the forward and backward directions under both TE and TM polarizations. Microwave experiments in the chamber are performed to verify the simulations, and the experimental results exhibit the excellent agreement with the simulations. Additionally, two I-shaped structures are orthogonally pasted on an ultrathin substrate, leading to the impedance-matching of both forward and backward directions, and the absorptance can be tailed dynamically via the middle layer of the substrate. The physics of the absorption are visualized by using a transmission line based on equivalent circuits. We claim that the designed bi-directional metamaterial absorber can be a good candidate for electromagnetic stealth and energy harvesting.

scholarly journals Broadband microwave metamaterial absorber with lumped resistor loading

2019 ◽  
Vol 6 ◽  
pp. 1 ◽  
Author(s):  
Ke Chen ◽  
Xinyao Luo ◽  
Guowen Ding ◽  
Junming Zhao ◽  
Yijun Feng ◽  
...  
Keyword(s):  
Electromagnetic Compatibility ◽  
Design Principle ◽  
Transverse Electric ◽  
Transverse Magnetic ◽  
Metamaterial Absorber ◽  
Absorption Bandwidth ◽  
Practical Applications ◽  
Angular Performance ◽  
Polarization Insensitive ◽  
Metamaterial Absorbers

Narrow absorption bandwidth has been a fundamental drawback hindering many metamaterial absorbers for practical applications. In this paper, by loading lumped resistors, we have successfully designed a microwave metamaterial absorber with multioctave wide absorption bandwidth covering the entire X- and Ku-bands, while keeping the thickness of the absorber less than 1/10 of the working wavelength. The polarization-insensitive absorber shows a good angular stability for both transverse electric (TE) and transverse magnetic (TM) incidences. Prototype has been fabricated and measured to validate the design principle and the simulated results, and good agreements are observed between simulated and measured results. The proposed metamaterial absorber offers an efficient way to realize broadband microwave absorption with stable angular performance, which may find potential uses in many applications, for example, electromagnetic compatibility.

Tunable broadband terahertz metamaterial absorber using multi-layer black phosphorus and vanadium dioxide

2020 ◽  
Vol 53 (14) ◽  
pp. 145105 ◽  
Author(s):  
Tongling Wang ◽  
Lizhi Qu ◽  
Lingfei Qu ◽  
Yuping Zhang ◽  
Huiyun Zhang ◽  
...  
Keyword(s):  
Vanadium Dioxide ◽  
Metamaterial Absorber ◽  
Black Phosphorus ◽  
Broadband Terahertz

A Simple Design of a Multi-Band Terahertz Metamaterial Absorber Based on Periodic Square Metallic Layer with T-Shaped Gap

Plasmonics ◽  
2017 ◽  
Vol 13 (1) ◽  
pp. 269-274 ◽  
Author(s):  
Hai-Yu Meng ◽  
Ling-Ling Wang ◽  
Xiang Zhai ◽  
Gui-Dong Liu ◽  
Sheng-Xuan Xia
Keyword(s):  
Metamaterial Absorber ◽  
Metallic Layer ◽  
Simple Design ◽  
Multi Band

Broadband Terahertz Metamaterial Absorber Based on Asymmetric Resonators With Perfect Absorption

2015 ◽  
Vol 5 (3) ◽  
pp. 406-411 ◽  
Author(s):  
Yongzheng Wen ◽  
Wei Ma ◽  
Joe Bailey ◽  
Guy Matmon ◽  
Xiaomei Yu
Keyword(s):  
Metamaterial Absorber ◽  
Perfect Absorption ◽  
Broadband Terahertz

Comment on “A Broadband Terahertz Metamaterial Absorber Based on Two Circular Split Rings”

2019 ◽  
Vol 55 (6) ◽  
pp. 1-3
Author(s):  
Xing-Liang Tian ◽  
Xin-Ru Kong ◽  
Guo-Biao Liu ◽  
Hai-Feng Zhang
Keyword(s):  
Metamaterial Absorber ◽  
Broadband Terahertz

A simple design of ultra-broadband and polarization insensitive terahertz metamaterial absorber

2013 ◽  
Vol 115 (4) ◽  
pp. 1187-1192 ◽  
Author(s):  
Ben-Xin Wang ◽  
Ling-Ling Wang ◽  
Gui-Zhen Wang ◽  
Wei-Qing Huang ◽  
Xiao-Fei Li ◽  
...  
Keyword(s):  
Metamaterial Absorber ◽  
Simple Design ◽  
Polarization Insensitive

Design of Ultra-Thin Broadband Terahertz Metamaterial Absorber Based on Patterned Graphene

2017 ◽  
Vol 44 (7) ◽  
pp. 0703024
Author(s):  
高红 Gao Hong ◽  
延凤平 Yan Fengping ◽  
谭思宇 Tan Siyu ◽  
白燕 Bai Yan
Keyword(s):  
Metamaterial Absorber ◽  
Broadband Terahertz

scholarly journals Theoretical Investigation of a Simple Design of Triple-Band Terahertz Metamaterial Absorber for High-Q Sensing

2019 ◽  
Vol 9 (7) ◽  
pp. 1410 ◽  
Author(s):  
Tao Chen ◽  
Runyu Zhao ◽  
Ben-Xin Wang
Keyword(s):  
Refractive Index ◽  
Narrow Band ◽  
Metamaterial Absorber ◽  
Resonance Absorption ◽  
Simple Design ◽  
Perfect Absorption ◽  
High Q ◽  
Au Film ◽  
Resonance Modes ◽  
Triple Band

This paper presents a simple metamaterial design to achieve the triple-band near-perfect absorption response that can be used in the area of sensor application. The introduced absorber consists of an array of Au strip and a bulk flat Au film separated by an insulator dielectric layer. Three narrow-band resonance absorption peaks are obtained by superposing three different modes (a fundamental mode resonance and two high-order responses) of the Au strip. These resonance modes (in particular of the last two modes) have large sensitivity to the changes of the surrounding index, overlayer thickness and the refractive index of the overlayer.

scholarly journals Near-field imaging of the multi-resonant mode induced broadband tunable metamaterial absorber

RSC Advances ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 5146-5151 ◽  
Author(s):  
Lulu Chen ◽  
Liaoxin Sun ◽  
Hongxing Dong ◽  
Nanli Mou ◽  
Yaqiang Zhang ◽  
...  
Keyword(s):  
Infrared Absorption ◽  
Near Field ◽  
Resonant Mode ◽  
Metamaterial Absorber ◽  
Mid Infrared ◽  
Near Field Imaging ◽  
Metamaterial Absorbers ◽  
Tunable Metamaterial ◽  
Field Imaging

Metamaterial absorbers with tunability have broad prospects for mid-infrared absorption applications.

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