Experimental Demonstration of Isotropic Negative Permeability in a Three-Dimensional Dielectric Composite

Zhao, Qian; Kang, Lei; Du, Bing; Zhao, Hongjin; Xie, Qian; Huang, Xiaozhong; Li, B.; Zhou, Ji; Li, L.

doi:10.1103/physrevlett.101.027402

Cited by 273 publications

(174 citation statements)

References 26 publications

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“…Ferroelectric barium strontium titanate (BST or Ba 0.5 Sr 0.5 TiO 3 ) was used to demonstrate dielectric metamaterials because of its high dielectric constant (∼ 600) at microwave frequencies. Left-handed behavior was observed in prisms formed by an array of periodic or random subwavelength BST rods [125], and negative magnetic response was also observed in a bulk metamaterials consisting of an array of subwavelength BST cubes [121]. In the optical frequency range, materials used to form dielectric metamaterials include tellurium (Te) cubes on barium fluoride (BaF 2 ) [126], cubic (β) phase silicon carbide (SiC) whiskers on zinc selenide (ZnSe) [127,128], in the mid-infrared; silicon cylindrical nano disks embedded within silicon dioxide [129] in the near infrared; silicon nano spheres on glass [130] and titanium dioxide cylindrical disks on silver [21] at visible frequencies.…”

Section: Dielectric Resonatorsmentioning

confidence: 96%

“…In most dielectric resonators of regular shapes such as spheres, cubes, cylindrical disks and rods, the lowest resonant mode is the magnetic dipole resonance and the second lowest mode is the electric dipole resonance [119,120]. Figure 14 shows the fundamental magnetic and electrical dipole modes for a cubic dielectric resonator [121]. The magnetic resonance mode originates from the excitation of circulating displacement currents, resulting in the strongest magnetic polarization at the center, similar to the case of magnetic resonant response in metallic SRRs.…”

Section: Dielectric Resonatorsmentioning

confidence: 99%

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A review of metasurfaces: physics and applications

2016

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Abstract. Metamaterials are composed of periodic subwavelength metal/dielectric structures that resonantly couple to the electric and/or magnetic components of the incident electromagnetic fields, exhibiting properties that not found in nature. This class of micro-and nano-structured artificial media have attracted great interest during the past 15 years and yielded ground-breaking electromagnetic and photonic phenomena. However, the high losses and strong dispersion associated with the resonant responses and the use of metallic structures, as well as the difficulty in fabricating the micro-and nanoscale 3D structures, have hindered practical applications of metamaterials. Planar metamaterials with subwavelength thickness, or metasurfaces, consisting of single-layer or few-layer stacks of planar structures can be readily fabricated using lithography and nanoprinting methods, and the ultrathin thickness in the wave propagation direction can greatly suppress the undesirable losses. Metasurfaces enable a spatially varying optical response (e.g., scattering amplitude, phase, and polarization), mold optical wavefronts into shapes that can be designed at will, and facilitate the integration of functional materials to accomplish active control and greatly enhanced nonlinear response. This paper reviews recent progress in the physics of metasurfaces operating at wavelengths ranging from microwave to visible. We provide an overview of key metasurface concepts such as anomalous reflection and refraction, and introduce metasurfaces based on the PancharatnamBerry phase and Huygens' metasurfaces, as well as their use in wavefront shaping and beam forming applications, followed by a discussion of polarization conversion in fewlayer metasurfaces and their related properties. An overview of dielectric metasurfaces reveals their ability to realize unique functionalities coupled with Mie resonances and their low ohmic losses. We also describe metasurfaces for wave guidance and radiation control, as well as active and nonlinear metasurfaces. Finally, we conclude by providing our opinions of future developments in this rapidly developing research field.

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Section: Dielectric Resonatorsmentioning

confidence: 96%

Section: Dielectric Resonatorsmentioning

confidence: 99%

A review of metasurfaces: physics and applications

2016

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“…Thus, it is very meaningful to carry out in-depth investigations on all-dielectric metamaterial absorbers. In recent years, the research of dielectric metamaterials has witnessed remarkable progresses in theory, [16][17][18][19][20] experiment, [21][22][23] and applications. [24][25][26][27][28] These provide a good foundation for the study of dielectric metamaterial absorbers.…”

Section: Introductionmentioning

confidence: 99%

A band enhanced metamaterial absorber based on E-shaped all-dielectric resonators

Li-yang

Wang

et al. 2015

AIP Advances

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In this paper, we propose a band enhanced metamaterial absorber in microwave band, which is composed of high-permittivity E-shaped dielectric resonators and metallic ground plate. The E-shaped all-dielectric structure is made of high-temperature microwave ceramics with high permittivity and low loss. An absorption band with 1 GHz bandwidth for both TE and TM polarizations are observed. Moreover, the absorption property is stable under different incident angles. The band enhanced absorption is caused by different resonant modes which lie closely in the absorption band. Due to the enhanced localized electric/magnetic fields at the resonant frequencies, strong absorptions are produced. Our work provides a new method of designing high-temperature and high-power microwave absorbers with band enhanced absorption.

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“…This mechanism offers a simpler and more versatile route for the fabrication of isotropic metamaterials operating at higher frequencies. Microwave ceramics with high permittivity and low loss were made into rods, spheres and cubic resonators [7,8]. The electromagnetic wave interaction of dielectric particles can exhibit a strong magnetic or electric resonance, and negative permeability or permittivity can be produced.…”

Section: Introductionmentioning

confidence: 99%

Magnetically Tunable Ferrite-Dielectric Left-Handed Metamaterial

Du¹,

Wang³

et al. 2016

PIER C

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Abstract-In this paper, a magnetically tunable metamaterial is proposed and studied. The metamaterial is based on the combination of ferrite sheets and dielectric rods. The tunable property is originated from the ferromagnetic resonance and electric response of dielectric rods. The retrieved electromagnetic parameters and transmission characteristic showed that by simultaneously inspiring the ferromagnetic resonance and electric resonance, composite metamaterial can possess double-negative band in the resonant state. Moreover, this band was tunable by adjusting applied magnetic fields. The simulations and experiments verified that the composite metamaterial clearly displayed a tunable feature. The proposed method is simple in designing tunable metamaterials.

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Experimental Demonstration of Isotropic Negative Permeability in a Three-Dimensional Dielectric Composite

Cited by 273 publications

References 26 publications

A review of metasurfaces: physics and applications

A review of metasurfaces: physics and applications

A band enhanced metamaterial absorber based on E-shaped all-dielectric resonators

Magnetically Tunable Ferrite-Dielectric Left-Handed Metamaterial

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