Metamaterials: Optical, acoustic, elastic, heat, mass, electric, magnetic, and hydrodynamic cloaking

Martinez, Francisco; Maldovan, Martin

doi:10.1016/j.mtphys.2022.100819

Cited by 46 publications

(14 citation statements)

References 83 publications

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“…The metamaterial is a sub-wavelength artificial material that exhibits unusual electromagnetic (EM) behavior, such as negative permittivity or permeability and negative or positive refractive index [ 1 ]. These properties make metamaterial-based microwave devices extremely popular for various applications such as energy harvesters [ 2 ], filters [ 3 ], sensors [ 4 , 5 , 6 , 7 ], polarization converters [ 8 ], invisible clocks [ 9 ], antenna design [ 10 , 11 , 12 , 13 , 14 , 15 ], SAR reduction [ 16 ], absorber [ 17 ], and photonic devices [ 18 , 19 , 20 , 21 ]. Metamaterial also significantly enables 5G wireless communication, which will be widely used for producing various 5G devices [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Triple-Band Square Split-Ring Resonator Metamaterial Absorber Design with High Effective Medium Ratio for 5G Sub-6 GHz Applications

et al. 2023

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This article proposes a square split-ring resonator (SSRR) metamaterial absorber (MMA) for sub-6 GHz application. The unit cell of the MMA was designed and fabricated on commercially available low-cost FR-4 substrate material with a dielectric constant o 4.3. The higher effective medium ratio (EMR) of the designed unit cell shows the compactness of the MMA. The dimension of the unit cell is 9.5 × 9.5 × 1.6 mm3, which consists of two split rings and two arms with outer SSRR. The proposed MMA operates at 2.5 GHz, 4.9 GHz, and 6 GHz frequency bands with a 90% absorption peak and shows a single negative metamaterial property. The E-field, H-field, and surface current are also explored in support of absorption analysis. Moreover, the equivalent circuit model of the proposed MMA is modelled and simulated to validate the resonance behavior of the MMA structure. Finally, the proposed MMA can be used for the specific frequency bands of 5G applications such as signal absorption, crowdsensing, SAR reduction, etc.

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Section: Introductionmentioning

confidence: 99%

Triple-Band Square Split-Ring Resonator Metamaterial Absorber Design with High Effective Medium Ratio for 5G Sub-6 GHz Applications

et al. 2023

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“…In contrast to traditional materials, metamaterials exhibit extraordinary properties that can be attributed to their unique structures. [ 1–3 ] In addition, careful geometrical design has been demonstrated to endow materials with excellent mechanical properties, and as a result, such mechanical metamaterials have recently attracted considerable research attention. [ 4–8 ] The demand for lightweight, high strength, high toughness, and high energy absorption structural materials in aerospace [ 9 ] and vehicle [ 10 ] has promoted the development of micro/nano mechanical metamaterials.…”

Section: Introductionmentioning

confidence: 99%

3D‐Printed Micro/Nano‐Scaled Mechanical Metamaterials: Fundamentals, Technologies, Progress, Applications, and Challenges

Chen

Zhang

et al. 2023

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Micro/nano‐scaled mechanical metamaterials have attracted extensive attention in various fields attributed to their superior properties benefiting from their rationally designed micro/nano‐structures. As one of the most advanced technologies in the 21st century, additive manufacturing (3D printing) opens an easier and faster path for fabricating micro/nano‐scaled mechanical metamaterials with complex structures. Here, the size effect of metamaterials at micro/nano scales is introduced first. Then, the additive manufacturing technologies to fabricate mechanical metamaterials at micro/nano scales are introduced. The latest research progress on micro/nano‐scaled mechanical metamaterials is also reviewed according to the type of materials. In addition, the structural and functional applications of micro/nano‐scaled mechanical metamaterials are further summarized. Finally, the challenges, including advanced 3D printing technologies, novel material development, and innovative structural design, for micro/nano‐scaled mechanical metamaterials are discussed, and future perspectives are provided. The review aims to provide insight into the research and development of 3D‐printed micro/nano‐scaled mechanical metamaterials.

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“…These structures increase the diffraction limit of conventional optical materials, resulting in optical phenomena such as negative refraction; consequently, metamaterials can be regarded as ideal lenses that improve the interaction between matter and light 11 . In addition, metamaterials are utilized for chiral imaging 12 , cloaking 13 , and concentrators 14 . The fractal metamaterial technology builds metamaterials using fractal structure.…”

Section: Introductionmentioning

confidence: 99%

All Silicon MIR super absorber using fractal metasurfaces

Ali

Ghanim

Othman

et al. 2023

Preprint

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The study of blackbody radiation led to the development of quantum mechanics more than a century ago. A blackbody is an ideal absorber, as it absorbs all the electromagnetic radiation that illuminates it. No radiation is transmitted through it, and none is reflected. Now, "bodies" with high absorption qualities are crucial in numerous scientific and technological fields. Perfect absorbers can be used as photodetectors, thermal images, microbolometers, and thermal photovoltaic solar energy conversion. The spectrum of Mid-infrared (MIR) wavelengths offers numerous advantages for a wide range of applications. Among these applications is chemical and biological detection. In this study, we propose a fractal broadband silicon (Si) absorber. The proposed structure is composed of three layers: metal, dielectric, and metal (MDM), with the metal being n-type D-Si and the dielectric being Silicon Carbide (SiC). The structural composition displays a broad absorption profile across a broad spectrum of infrared wavelengths, ranging from 3 to 9 µm. The architectural design was derived from the Sierpinski carpet fractal, and different building locks were simulated to attain optimal absorption. Silicon that has been doped exhibits superior performance compared to metals in energy harvesting applications that utilize plasmonics at the mid-infrared range. Typically, semiconductors exhibit rough surfaces than noble metals, resulting in lower scattering losses. Moreover, silicon presents various advantages, including compatibility with complementary metal-oxide-semiconductor (CMOS) and simple manufacturing through conventional silicon fabrication methods. In addition, the utilization of doped silicon material in the mid-IR region facilitates the creation of microscale integrated plasmonic devices. This combination enables the production of numerous traditional plasmonic devices. The 2D finite element method (FEM) approach via COMSOL software is used to obtain the numerical results. The suggested fractal absorber exhibits high absorption enhancement in the Mid-IR range.

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Metamaterials: Optical, acoustic, elastic, heat, mass, electric, magnetic, and hydrodynamic cloaking

Cited by 46 publications

References 83 publications

Triple-Band Square Split-Ring Resonator Metamaterial Absorber Design with High Effective Medium Ratio for 5G Sub-6 GHz Applications

Triple-Band Square Split-Ring Resonator Metamaterial Absorber Design with High Effective Medium Ratio for 5G Sub-6 GHz Applications

3D‐Printed Micro/Nano‐Scaled Mechanical Metamaterials: Fundamentals, Technologies, Progress, Applications, and Challenges

All Silicon MIR super absorber using fractal metasurfaces

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