Experimental verification of multi-band metamaterial absorber with double structured layers

Yang, Dong; Xia, Yingqin

doi:10.1088/2053-1591/ab7e4d

Cited by 15 publications

(9 citation statements)

References 37 publications

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“…Photolithography is a technique of microfabrication, which can be used to synthesize metamaterials that work at terahertz frequencies. This technique has been commonly used in the manufacturing of single and multilayer (3D) metamaterials [ 63 ], since it is able to fabricate high-resolution subwavelength structures at wavelength 30 μm–3 mm with minimal complication [ 64 , 65 ]. Figure 6 provides an example of the reported metamaterial made by microfabrication onto flexible substrates.…”

Section: Metamaterials Fabrication Techniquesmentioning

confidence: 99%

Metamaterials and Metasurfaces: A Review from the Perspectives of Materials, Mechanisms and Advanced Metadevices

2022

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Throughout human history, the control of light, electricity and heat has evolved to become the cornerstone of various innovations and developments in electrical and electromagnetic technologies. Wireless communications, laser and computer technologies have all been achieved by altering the way light and other energy forms act naturally and how to manage them in a controlled manner. At the nanoscale, to control light and heat, matured nanostructure fabrication techniques have been developed in the last two decades, and a wide range of groundbreaking processes have been achieved. Photonic crystals, nanolithography, plasmonics phenomena and nanoparticle manipulation are the main areas where these techniques have been applied successfully and led to an emergent material sciences branch known as metamaterials. Metamaterials and functional material development strategies are focused on the structures of the matter itself, which has led to unconventional and unique electromagnetic properties through the manipulation of light—and in a more general picture the electromagnetic waves—in widespread manner. Metamaterial’s nanostructures have precise shape, geometry, size, direction and arrangement. Such configurations are impacting the electromagnetic light waves to generate novel properties that are difficult or even impossible to obtain with natural materials. This review discusses these metamaterials and metasurfaces from the perspectives of materials, mechanisms and advanced metadevices in depth, with the aim to serve as a solid reference for future works in this exciting and rapidly emerging topic.

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Section: Metamaterials Fabrication Techniquesmentioning

confidence: 99%

Metamaterials and Metasurfaces: A Review from the Perspectives of Materials, Mechanisms and Advanced Metadevices

2022

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“…The traditional fabrication methods for metamaterials are photolithography, , electron-beam lithography, coating, and etching . Nevertheless, these conventional methods suffer from drawbacks, including intricate processes, lengthy processing cycles, exorbitant costs, material waste resulting from subtractive manufacturing, and environmental pollution caused by the use of chemical corrosion reagents .…”

Section: Introductionmentioning

confidence: 99%

“…11,12 In recent years, researchers have displayed considerable enthusiasm for studying metamaterials, given their potential applications in the field of electromagnetics, including but not limited to antennas, 13 photonic filters, 14 and electromagnetic shielding. 10 The traditional fabrication methods for metamaterials are photolithography, 15,16 electron-beam lithography, 17 coating, 18 and etching. 19 Nevertheless, these conventional methods suffer from drawbacks, including intricate processes, 20 lengthy processing cycles, 2 exorbitant costs, 6 material waste resulting from subtractive manufacturing, 21 and environmental pollution caused by the use of chemical corrosion reagents.…”

Section: Introductionmentioning

confidence: 99%

Additive Manufacturing for Terahertz Metamaterials on the Dielectric Surface based on Optimized Electrohydrodynamic Drop-on-demand Printing Technology

Gong,

Huang,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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The conventional techniques used to fabricate terahertz metamaterials, such as photolithography and etching, face hindrances in the form of high costs, lengthy processing cycles, and environmental pollution. In contrast, electrohydrodynamic (EHD) drop-on-demand (DOD) printing technology holds promise as an additive manufacturing method capable of producing micrometer-and nanometer-scale patterns rapidly and costeffectively. However, achieving stable large-area printing proves challenging due to issues related to charge accumulation in insulated substrates and inconsistent meniscus vibration. In this paper, a smooth bipolar waveform driving method is proposed aimed at solving the problems of charge accumulation on insulated substrates and poor print consistency. The method involves utilizing driving waveforms with opposite polarities for neighboring droplets, allowing the charges carried by the printed droplets to neutralize each other. Moreover, extending the duration of the high voltage rise and fall times enhances the consistency of meniscus motion, thereby improving the stability of printing. Through optimization of the printing parameters, droplets with a diameter of 1.37 μm and straight lines with a width of 3 μm were printed. Furthermore, this approach was employed to print terahertz metamaterial surface devices, and the performance of the metamaterial is in good agreement with the simulation results. These findings demonstrate that the method greatly improves the stability of EHD DOD printing, thereby advancing the application of the technology in additive processing at the micro-and nanoscale.

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“…In addition, unit cells with resonators of different sizes can lead to non‐homogeneous characteristics due to the large cell sizes (H. Li et al., 2011; Luo et al., 2011). Although other studies have proposed multiband absorbers, they have either complex structures or weak absorption peaks (Chaurasiya et al., 2015; Sarkhel & Chaudhuri, 2017; Yang & Xia, 2020).…”

Section: Introductionmentioning

confidence: 99%

Multiband Metasurface‐Based Absorber for Applications in X, Ku, and K Bands

Coelho,

Araújo,

Silva

et al. 2023

Radio Science

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In this paper, a slotted‐circle patch metasurface that can efficiently absorb electromagnetic (EM) waves in three different bands is proposed. Based on the fundamental resonance of a single circular patch, EM resonances are generated making slits in the circular patch leading to multi‐band operation. Simulation results show that the proposed structure can absorb signals in three different bands, namely at 8.10 GHz, 15.39 GHz, and 19.7 GHz with absorption peaks of 99.8%, 99.7%, and 99.8%, and absorption bandwidths of 132 MHz, 181 MHz and 90 MHz, respectively. The absorption mechanism is discussed on the basis of the single‐layer effective medium (SLEM) model and the analysis of surface current and electric field distributions. Furthermore, the experimental results show good agreement with the numerical simulations, with an average absorption greater than 99%. The 2‐mm thick absorber is electrically thin, corresponding to ∼ λ/18 at its lowest operating frequency. Compared to other published designs, the proposed absorber has a single resonator with simple geometry, but operates in multiband. Therefore, it can be used in many applications such as anechoic chambers, scattering control, photodetectors, microbolometers, and solar cells. The proposed metasurface absorber can be used for microwave energy harvesting as well as sensor and RCS reduction applications.This article is protected by copyright. All rights reserved.

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Experimental verification of multi-band metamaterial absorber with double structured layers

Cited by 15 publications

References 37 publications

Metamaterials and Metasurfaces: A Review from the Perspectives of Materials, Mechanisms and Advanced Metadevices

Metamaterials and Metasurfaces: A Review from the Perspectives of Materials, Mechanisms and Advanced Metadevices

Additive Manufacturing for Terahertz Metamaterials on the Dielectric Surface based on Optimized Electrohydrodynamic Drop-on-demand Printing Technology

Multiband Metasurface‐Based Absorber for Applications in X, Ku, and K Bands

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