scholarly journals Dual-band dielectric metamaterial absorber and sensing applications

2020 ◽  
Vol 18 ◽  
pp. 103272 ◽  
Author(s):  
Sujuan Feng ◽  
Yan Zhao ◽  
Yan-Lin Liao
Keyword(s):  
Metamaterial Absorber ◽  
Dual Band ◽  
Sensing Applications

scholarly journals Polarization insensitivity characterization of dual-band perfect metamaterial absorber for K band sensing applications

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mohammad Lutful Hakim ◽  
Touhidul Alam ◽  
Ali F. Almutairi ◽  
Mohd Fais Mansor ◽  
Mohammad Tariqul Islam
Keyword(s):  
Metamaterial Absorber ◽  
Ring Resonators ◽  
Dual Band ◽  
Sensing Applications ◽  
Tm Mode ◽  
Polarization Insensitive ◽  
Transverse Electromagnetic ◽  
Polarization Insensitivity ◽  
K Band

AbstractPolarization insensitive metamaterial absorbers (MA) are currently very attractive due to their unique absorption properties at different polarization angles. As a result, this type of absorber is widely used in sensing, imaging, energy harvesting, etc. This paper presents the design and characterization of a dual-band polarization-insensitive metamaterial absorber (MA) for K-band applications. The metamaterial absorber consists of two modified split ring resonators with an inner cross conductor to achieve a 90% absorption bandwidth of 400 MHz (21.4–21.8 GHz) and 760 MHz (23.84–24.24 GHz) at transverse electromagnetic (TEM), transverse electric (TE), and transverse magnetic (TM) mode. Polarization insensitivity of different incident angles for TE and TM mode is also investigated, which reveals a similar absorption behavior up to 90°. The metamaterial structure generates single negative (SNG) property at a lower frequency of 21.6 GHz and double negative property (DNG) at an upper frequency of 24.04 GHz. The permittivity and pressure sensor application are investigated for the proposed absorber, which shows its useability in these applications. Finally, a comparison with recent works is also performed to demonstrate the feasibility of the proposed structure for K band application, like sensor, filter, invasive clock, etc.

scholarly journals A Polarization Independent Quasi-TEM Metamaterial Absorber for X and Ku Band Sensing Applications

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4209 ◽  
Author(s):  
Ahasanul Hoque ◽  
Mohammad Tariqul Islam ◽  
Ali Almutairi ◽  
Touhidul Alam ◽  
Mandeep Jit Singh ◽  
...  
Keyword(s):  
Satellite Communication ◽  
Wave Spectrum ◽  
Metamaterial Absorber ◽  
Simulation Software ◽  
Ring Resonators ◽  
Dual Band ◽  
Absorption Bands ◽  
Sensing Applications ◽  
Resonance Frequencies ◽  
Ku Band

In this paper, a dual-band metamaterial absorber (MMA) ring with a mirror reflexed C-shape is introduced for X and Ku band sensing applications. The proposed metamaterial consists of two square ring resonators and a mirror reflexed C-shape, which reveals two distinctive absorption bands in the electromagnetic wave spectrum. The mechanism of the two-band absorber particularly demonstrates two resonance frequencies and absorption was analyzed using a quasi-TEM field distribution. The absorption can be tunable by changing the size of the metallic ring in the frequency spectrum. Design and analysis of the proposed meta-absorber was performed using the finite-integration technique (FIT)-based CST microwave studio simulation software. Two specific absorption peaks value of 99.6% and 99.14% are achieved at 13.78 GHz and 15.3 GHz, respectively. The absorption results have been measured and compared with computational results. The proposed dual-band absorber has potential applications in sensing techniques for satellite communication and radar systems.

Single-peak-regulation and wide-angle dual-band metamaterial absorber based on hollow-cross and solid-cross resonators

2020 ◽  
Vol 91 (3) ◽  
pp. 30901
Author(s):  
Yibo Tang ◽  
Longhui He ◽  
Jianming Xu ◽  
Hailang He ◽  
Yuhan Li ◽  
...  
Keyword(s):  
Transverse Electric ◽  
Surface Current ◽  
Dielectric Substrate ◽  
Transverse Magnetic ◽  
Metamaterial Absorber ◽  
Absorption Peak ◽  
Dual Band ◽  
Single Peak ◽  
Wide Angle ◽  
Surface Current Density

A dual-band microwave metamaterial absorber with single-peak regulation and wide-angle absorption has been proposed and illustrated. The designed metamaterial absorber is consisted of hollow-cross resonators, solid-cross resonators, dielectric substrate and metallic background plane. Strong absorption peak coefficients of 99.92% and 99.55% are achieved at 8.42 and 11.31 GHz, respectively, which is basically consistent with the experimental results. Surface current density and changing material properties are employed to illustrate the absorptive mechanism. More importantly, the proposed dual-band metamaterial absorber has the adjustable property of single absorption peak and could operate well at wide incidence angles for both transverse electric (TE) and transverse magnetic (TM) waves. Research results could provide and enrich instructive guidances for realizing a single-peak-regulation and wide-angle dual-band metamaterial absorber.

Polarization-insensitive dual-band terahertz metamaterial absorber based on asymmetric arrangement of two rectangular-shaped resonators

Optik ◽  
2021 ◽  
pp. 167669
Author(s):  
Dac Tuyen Le ◽  
Ba Tuan Tong ◽  
Thi Kim Thu Nguyen ◽  
Thanh Nghia Cao ◽  
Hong Quang Nguyen ◽  
...  
Keyword(s):  
Metamaterial Absorber ◽  
Dual Band ◽  
Polarization Insensitive

Design and Investigation of Polarization Independent Dual-Band Metamaterial Absorber

2020 ◽  
Author(s):  
Nur Izzati Zulkefli ◽  
Adel Ashyap ◽  
Ariffuddin Joret ◽  
Siti Hajar Aminah Ali ◽  
Samsul Haimi Dahlan ◽  
...  
Keyword(s):  
Metamaterial Absorber ◽  
Dual Band ◽  
Polarization Independent

scholarly journals Dual-band tunable perfect metamaterial absorber in the THz range

2016 ◽  
Vol 24 (2) ◽  
pp. 1518 ◽  
Author(s):  
Gang Yao ◽  
Furi Ling ◽  
Jin Yue ◽  
Chunya Luo ◽  
Jie Ji ◽  
...  
Keyword(s):  
Metamaterial Absorber ◽  
Dual Band ◽  
Perfect Metamaterial Absorber ◽  
Thz Range

Absorption enhancement of a dual-band metamaterial absorber

2017 ◽  
Vol 86 ◽  
pp. 158-163 ◽  
Author(s):  
Min Zhong ◽  
Gui Ming Han ◽  
Shui Jie Liu ◽  
Bang Li Xu ◽  
Jie Wang ◽  
...  
Keyword(s):  
Metamaterial Absorber ◽  
Dual Band ◽  
Absorption Enhancement

Dual-band isotropic metamaterial absorber based on near-field interaction in the Ku band

2020 ◽  
Vol 20 (2) ◽  
pp. 331-336 ◽  
Author(s):  
The Linh Pham ◽  
Hong Tiep Dinh ◽  
Dinh Hai Le ◽  
Xuan Khuyen Bui ◽  
Son Tung Bui ◽  
...  
Keyword(s):  
Near Field ◽  
Metamaterial Absorber ◽  
Dual Band ◽  
Field Interaction ◽  
Ku Band

scholarly journals Hybrid Metamaterials Perfect Absorber and Sensitive Sensor in Optical Communication Band

2021 ◽  
Vol 9 ◽  
Author(s):  
Xuehan Liu ◽  
Keyang Li ◽  
Zhao Meng ◽  
Zhun Zhang ◽  
Zhongchao Wei
Keyword(s):  
Optical Communication ◽  
Electromagnetic Waves ◽  
Incident Angle ◽  
Silicon Layer ◽  
Resonance Wavelength ◽  
Metamaterial Absorber ◽  
Absorption Peak ◽  
Dual Band ◽  
Perfect Absorber ◽  
Perfect Absorption

A subwavelength metamaterial perfect absorber (MPA) in optical communication band was proposed and tested using the finite-difference time-domain method. The absorber is periodic and comprises a top layer of diamond silicon surrounded by L-shaped silicon and a gold layer on the substrate. It can achieve dual-band perfect absorption, and one of the peaks is in the optical communication band. By changing the gap (g) between two adjacent pieces of L-shaped silicon, and the thickness (h) of the silicon layer, the resonance wavelength of absorption peak can be tuned. When the incident electromagnetic wave entered the absorber, the metamaterial absorber could almost completely consume the incident electromagnetic waves, thereby achieving more than 99% perfect absorption. The absorption peak reaches 99.986% at 1310 nm and 99.421% at 1550 nm. Moreover, the MPA exposed to different ambient refraction indexes can be applied as plasma sensors, and can achieve multi-channel absorption with high figure of merit (FOM*) value and refractive index (RI) sensitivity. The FOM* values at 1310 nm and 1550 nm are 6615 and 168, respectively, and both resonance peaks have highly RI sensitivity. The results confirm that the MPA is a dual-band, polarization-independent, wide-angle absorber and insensitive to incident angle. Thence it can be applied in the fields of optical communication, used as a light-wave filter and plasma sensor, and so on.

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