Theoretical study on wave-absorption properties of a structure with left- and right-handed materials

Wang, Zhengping; Zhang, Zhenhui; Qin, S; Wang, Lihui; Wang, Xiaoxiao

doi:10.1016/j.matdes.2008.03.015

Cited by 14 publications

(7 citation statements)

References 3 publications

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“…Landy proposed a perfect metamaterial absorber composed of a periodic array of structural cells [1]. Metamaterial absorbers have attracted wide attention, and have been widely used in electromagnetics imaging [2][3][4][5], polarizers [6,7], stealth [8][9][10], and radio frequency [11][12][13]. With the increase in * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

An ionic liquid-based ultra-broadband absorber with temperature stability, polarization insensitivity, and wide incident angle

zhang¹,

Yang²,

Zhang³

et al. 2023

J. Phys. D: Appl. Phys.

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In this paper, an ultra-broadband absorber based on ionic liquids is proposed. It is an absorber that is a fully enclosed resin container, and the resin is filled with an ionic liquids([EMIM][N(CN)2]) with a circular cross-section. The simulation results show that the single-ring absorber can achieve more than 90% absorption in the microwave range of 12.25-50GHz, and the relative bandwidth reaches 121.29%. Based on the theories of equivalent medium and impedance matching, the mechanism of broadband absorption was explored by analyzing the electromagnetic field distribution and power loss density of the absorber. In addition, the absorber exhibits good thermal stability in the range of 20-100 °C, and has the characteristics of polarization insensitivity and wide incident angle. The proposed metamaterial absorber can be fabricated at a low cost, is environment friendly, and may find potential applications in the fields of electromagnetic energy harvesting and stealth technology.

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Section: Introductionmentioning

confidence: 99%

An ionic liquid-based ultra-broadband absorber with temperature stability, polarization insensitivity, and wide incident angle

zhang¹,

Yang²,

Zhang³

et al. 2023

J. Phys. D: Appl. Phys.

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“…It is concluded that with the increase of thickness, the blocking rate of the material increases. Wang et al [35] investigated wave-absorption properties of a structure with lefthanded and right-handed materials by using both a theoretical model and numerical method. The results showed that when the incident wave is vertical, the reflectivity reduces and the absorbing bandwidth expands.…”

Section: Introductionmentioning

confidence: 99%

“…It is concluded that with the increase of thickness, the blocking rate of the material increases. Wang et al [35] . investigated wave‐absorption properties of a structure with left‐handed and right‐handed materials by using both a theoretical model and numerical method.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Properties of Polypyrrole Metallic Magnetic Nanocomposites: First‐Principles Study

Wang

Huang

et al. 2022

ChemistrySelect

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Conductive polypyrrole (PPy) is an excellent polymer material for microwave absorption, which is vital for reducing electromagnetic interference (EMI) for electronic devices. To improve the microwave absorption capability and enhance the thermal stability and mechanical ductility of conductive PPy, metallic magnetic nanoparticles can be added to form PPy nanocomposites. In this paper, we present the first study to compute the electromagnetic properties of PPy nanocomposites based on the first principles method. It is discovered that (1) while doping can improve the microwave absorbing proper-ties of PPy material, the absorption performance does not necessarily increase with the number of doping position; (2) conductivity and absorption coefficient increase significantly for the PPy nanocomposite compared with PPy. The dielectric loss is more than 2 at about 2 eV; (3) reflectivity and absorption coefficient decrease with the increase of PPy content in PPy/Co nanocomposite; (4) the average magnetic moment of the PPy nanocomposite is the same as that of pure nanoparticles, and this indicates that only nanoparticles generate magnetic loss for the nanocomposite.

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“…A wave−absorber model with air/LHM/dielectric/metal structure was proposed and wave−absorption properties of the structure were theoreti− cally analyzed and numerically simulated [7]. Interaction of two dark solitons in nonlinear LHMs and the generation of new electromagnetic envelops were studied [8].…”

Section: Introductionmentioning

confidence: 99%

Reflection and transmission from left-handed material structures using Lorentz and Drude medium models

Taya

El-Amassi

2015

Opto-Electronics Review

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The present article investigates theoretically the refection and transmission through a lossless dielectric slab embedded between two semi−infinite left−handed materials (LHMs) in which the electric permittivity and magnetic permeability are simultaneously negative. The LHM is assumed to be dispersive according to Lorentz as well as Drude medium model. The reflection and transmission coefficients are studied with the angle of incidence, frequency and slab thickness. The effect of the damping frequency is also investigated. It is found that the damping frequency has an insignificant effect on reflected, transmitted and loss powers. Band pass filter is one of the possible applications of the proposed structure.

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Theoretical study on wave-absorption properties of a structure with left- and right-handed materials

Cited by 14 publications

References 3 publications

An ionic liquid-based ultra-broadband absorber with temperature stability, polarization insensitivity, and wide incident angle

An ionic liquid-based ultra-broadband absorber with temperature stability, polarization insensitivity, and wide incident angle

Electromagnetic Properties of Polypyrrole Metallic Magnetic Nanocomposites: First‐Principles Study

Reflection and transmission from left-handed material structures using Lorentz and Drude medium models

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