An Overview of Electromagnetic Metamaterials

Barroso, R.; Malpica, Wilmer

doi:10.1109/tla.2020.9398627

Cited by 8 publications

(3 citation statements)

References 46 publications

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“…11 . 2 Employing the Keithley 2450 Source Meter, reverse voltage was applied to the varactor diode. As depicted in figure 6(b), the modulation of reverse voltage from 0 V to 20 V resulted in a gradual shift of the MMA absorption peak from 5.11 GHz to 8.18 GHz.…”

Section: Measurement and Discussionmentioning

confidence: 99%

“…Electromagnetic metamaterial is an artificial structural material composed of sub-wavelength scale units with specific geometric shapes, arranged periodically or non-periodically. It can transcend the limitations faced by traditional materials at the atomic or molecular level, enabling precise control over electromagnetic waves [1,2]. Metamaterial absorbers (MMAs) have the capacity to attain nearly flawless absorption of radar waves, consequently diminishing the radar cross section (RCS) of the target [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

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Ultra-thin wideband frequency tunable metamaterial absorber and its application for antenna radar cross section reduction

Luo,

Zheng,

Wang

et al. 2024

Phys. Scr.

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A metamaterial absorber (MMA) with broadband and efficient absorption performance based on ultra-thin dielectric layer is proposed. In this unique configuration, the absorption frequency of the MMA can be continuously and dynamically tuned across a wide frequency range by manipulating the reverse voltage of the central varactor diode. From both the equivalent circuit and field distribution perspectives, we analyze the mechanisms behind broadband tuning and superior absorption. Simulation and experimental results demonstrate that the absorption peak of MMA can be continuously tuned over a range of 5.16-8.16 GHz, with the absorption rate consistently exceeding 90%, and the thickness is only 0.5 mm. Integrating MMA array with a microstrip patch antenna in a suitable manner can dynamically mitigates the radar cross section (RCS) within the associated frequency range, with virtually negligible impact on the antenna's radiation performance.

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Section: Measurement and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ultra-thin wideband frequency tunable metamaterial absorber and its application for antenna radar cross section reduction

Luo,

Zheng,

Wang

et al. 2024

Phys. Scr.

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“…The improvement in nanoscale metal pattern formation technology on plastic substrates is expected to enable the fabrication of advanced printed electronic devices 1) on plastic substrates that are transparent, flexible, lightweight, and lowcost. For example, metal dot patterns are used as metamaterials 2,3) to cause surface plasmon resonance 4) and for multi-disease sensing 5) via exhalation. Metal wires are used for transparent conductive electrodes 6,7) to realize organic solar cells.…”

Section: Introductionmentioning

confidence: 99%

Silver pattern transfer technique using concave region of mold and silver ink

Enomoto

Taniguchi

2023

Jpn. J. Appl. Phys.

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Previous studies have shown that the nano transfer printing (NTP) process can be realized in a cyclic olefin copolymer (COP) replica mold using a metal-oxide release layer. However, vacuum deposition of metals has the disadvantage of being time consuming. Therefore, there is a need for a technology to deposit metal films under atmospheric pressure. In this study, we performed two-tone transfers using silver ink. To achieve a two-tone transfer, it is necessary to separate the metal film from the top surface of the mold and the metal part at the bottom of the hole. However, in the case of silver ink, the hole is often completely filled; therefore, separation between the top surface and the bottom of the hole is difficult. To address this issue, we investigated the relationship between the spin-coating conditions and pattern success rate.

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