A refractory metamaterial absorber for ultra-broadband, omnidirectional and polarization-independent absorption in the UV-NIR spectrum

Nanoscale ◽  
2018 ◽  
Vol 10 (17) ◽  
pp. 8298-8303 ◽  
Author(s):  
Yijia Huang ◽  
Ling Liu ◽  
Mingbo Pu ◽  
Xiong Li ◽  
Xiaoliang Ma ◽  
...  
Keyword(s):  
Near Infrared ◽  
Metamaterial Absorber ◽  
Perfect Absorber ◽  
Broadband Absorption ◽  
Polarization Independent ◽  
Metamaterial Perfect Absorber

In this paper, efficient ultra-broadband absorption from ultraviolet (UV) to near infrared (NIR) is achieved using a metamaterial perfect absorber (MPA) with refractory constituents.

Ultrahigh-Q and Polarization-Independent Terahertz Metamaterial Perfect Absorber

Plasmonics ◽  
2020 ◽  
Vol 15 (6) ◽  
pp. 1943-1947
Author(s):  
Jing Wang ◽  
Chengpeng Hu ◽  
Qi Tian ◽  
Wenxiu Yu ◽  
Hao Tian ◽  
...  
Keyword(s):  
Perfect Absorber ◽  
Polarization Independent ◽  
Metamaterial Perfect Absorber

scholarly journals Efficient Broadband Truncated-Pyramid-Based Metamaterial Absorber in the Visible and Near-Infrared Regions

Crystals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 784 ◽  
Author(s):  
Phuc Toan Dang ◽  
Tuan V. Vu ◽  
Jongyoon Kim ◽  
Jimin Park ◽  
Van-Chuc Nguyen ◽  
...  
Keyword(s):  
Communication Systems ◽  
Near Infrared ◽  
Cell Structure ◽  
Single Layer ◽  
Normal Incidence ◽  
Transverse Magnetic ◽  
Metamaterial Absorber ◽  
Broadband Absorption ◽  
Polarization Insensitive ◽  
Truncated Pyramid

We present a design of an ultra-broadband metamaterial absorber in the visible and near- infrared regions. The unit cell structure consists of a single layer of metallic truncated-pyramid resonator-dielectric-metal configuration, which results in a high absorption over a broad wavelength range. The absorber exhibits 98% absorption at normal incidence spanning a wideband range of 417–1091 nm, with >99% absorption within 822–1054 nm. The broadband absorption stability maintains 95% at large incident angles up to 40° for the transverse electric (TE)-mode and 20° for the transverse magnetic (TM)-mode. Furthermore, the polarization-insensitive broadband absorption is presented in this paper by analyzing absorption performance with various polarization angles. The proposed absorber can be applied for applications such as solar cells, infrared detection, and communication systems thanks to the convenient and compatible bandwidth for electronic THz sources.

Dual-band metamaterial perfect absorber with nearly polarization-independent

2016 ◽  
Vol 123 (1) ◽  
Author(s):  
Osman Ayop ◽  
Mohamad Kamal A. Rahim ◽  
Noor Asniza Murad ◽  
Noor Asmawati Samsuri ◽  
Farid Zubir ◽  
...  
Keyword(s):  
Dual Band ◽  
Perfect Absorber ◽  
Polarization Independent ◽  
Metamaterial Perfect Absorber

scholarly journals Wide-band metamaterial perfect absorber through double arrow shape printed on a thin dielectric

2021 ◽  
Vol 10 (5) ◽  
pp. 2488-2495
Author(s):  
Siti Adlina Md Ali ◽  
Maisarah Abu ◽  
Siti Normi Zabri ◽  
Shipun Anuar Hamzah
Keyword(s):  
Ground Plane ◽  
Wide Band ◽  
Metamaterial Absorber ◽  
Air Gap ◽  
Fabrication Process ◽  
Perfect Absorber ◽  
Practical Applications ◽  
Thin Line ◽  
Metamaterial Perfect Absorber ◽  
Double Arrow

A wide-band metamaterial perfect absorber was introduced. The dual arrow shapes and the ground plane were in between the 0.0035λ TLY-3. Lump element technique was applied to enhance the absorption bandwidth, which was connected between both of the arrow structures. The limitation during fabrication process in using lump element, had seriously restricted its practical applications for microwave absorption. Then, a very thin line was connected between both arrow structures to represent the resistance by lump element which was expected to ease the fabrication process and practical applications as well. Four cases were analyzed: double arrow, double arrow with lump connected, double arrow with lump connected and 9 mm air gap, and thin line connected with 6 mm air gap. The fourth case achieved the highest operational absorbency frequency, which developed about 7.38 GHz (3.87 GHz to 11.25 GHz) approximately to 7.38 GHz. Three resonant frequencies were achieved; 4.17 GHz, 6.09 GHz and 10.30 GHz with perfect absorbency. These properties are expected to be used in practical applications such as satellite and radar communications transmission. These properties of the metamaterial absorber could increase the functionality of the metamaterial absorber to be used in any application especially in reducing radar cross section for stealth application.

Characteristic analysis of a photoexcited metamaterial perfect absorber at terahertz frequencies

2017 ◽  
Vol 31 (18) ◽  
pp. 1750207 ◽  
Author(s):  
Pibin Bing ◽  
Shichao Huang ◽  
Zhongyang Li ◽  
Zhou Yu ◽  
Ying Lu ◽  
...  
Keyword(s):  
Time Domain ◽  
Finite Difference Time Domain ◽  
Metamaterial Absorber ◽  
Dielectric Constants ◽  
Electromagnetic Response ◽  
Perfect Absorber ◽  
Characteristic Analysis ◽  
Terahertz Frequencies ◽  
Difference Time ◽  
Metamaterial Perfect Absorber

The absorption characteristics of a photoexcited metamaterial absorber at terahertz frequencies were analyzed in this study. Filling photosensitive semiconductor silicon into the gap between the resonator arms leads to modulation of its electromagnetic response through a pump beam which changes conductivity of silicon. Comparisons of terahertz absorbing properties which were caused by different thicknesses and dielectric constants of polyimide, cell sizes and widths of SRRs, and lengths and conductivities of the photosensitive silicon, were studied by using Finite Difference Time Domain (FDTD) from 0.4 THz to 1.6 THz. The results of this study will facilitate the design and preparation of terahertz modulator, filters and absorbers.

scholarly journals Omnidirectional, polarization-independent, ultra-broadband metamaterial perfect absorber using field-penetration and reflected-wave-cancellation

2016 ◽  
Vol 24 (10) ◽  
pp. A832 ◽  
Author(s):  
Yan Kai Zhong ◽  
Yi-Chun Lai ◽  
Ming-Hsiang Tu ◽  
Bo-Ruei Chen ◽  
Sze Ming Fu ◽  
...  
Keyword(s):  
Perfect Absorber ◽  
Reflected Wave ◽  
Polarization Independent ◽  
Metamaterial Perfect Absorber ◽  
Field Penetration
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