Negative and near zero refraction metamaterials based on permanent magnetic ferrites

Bi, Kaiming; Guo, Yunsheng; Zhou, Ji; Dong, Guoyan; Zhao, Hongjin; Zhao, Qian; Xiao, Zongqi; Liu, Xiaoming; Lan, Chuwen

doi:10.1038/srep04139

Cited by 25 publications

(8 citation statements)

References 32 publications

(38 reference statements)

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“…The perspectives to diversify these resonant effects are based on the controlled flexibility of electromagnetic parameters of dielectric metamaterials 6 , 7 . Special attention is given to so-called single-negative metamaterials, characterized by negative magnetic permeability ( μ < 0) in some spectral ranges 8 , 9 . Pendry et al .…”

Section: Introductionmentioning

confidence: 99%

Resonant microwave fields and negative magnetic response, induced by displacement currents in dielectric rings: theory and the first experiments

Shvartsburg

Pecherkin

Vasilyak

et al. 2017

Sci Rep

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The theoretical basis and experimental verification of resonant phenomena in the electromagnetic fields generated by displacement current in the near zone of dielectric ring is presented. According to the traditional viewpoint, the dielectric has an influence on the electric field inside resonator. To the contrary, we demonstrate that the dielectric ring exhibits magnetic properties at resonance. The sliding incidence of plane microwave on this weakly absorbing ring is shown to provide the sharp and deep resonance in the components of generated field; this low loss circuit is operating as a resonant dielectric magnetic dipole. Splitting and broadening of resonance in the pair of these dipoles dependent upon their mutual arrangement is recorded. The phase shift equal to π between the magnetic components of incident and generated wave indicating the formation of negative magnetic response is demonstrated. Perspectives of using of this simple sub wavelength resonant magnetic dipoles in the all-dielectric circuitry are discussed.

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Section: Introductionmentioning

confidence: 99%

Resonant microwave fields and negative magnetic response, induced by displacement currents in dielectric rings: theory and the first experiments

Shvartsburg

Pecherkin

Vasilyak

et al. 2017

Sci Rep

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“…Here we focus on wire-based dielectric metamaterials that interact primarily with oscillating electric fields and display values of the dielectric function that are rarely encountered in nature. Such metamaterials have been studied in the past mainly for their anisotropic optical properties [8], for creating deep subwavelength resonators [9], or for their modification of the index of refraction with magnetic field [10,11].…”

mentioning

confidence: 99%

Tunable superconducting Josephson dielectric metamaterial

et al. 2019

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We demonstrate a low-dissipation dielectric metamaterial with tunable properties based on the Josephson effect. Superconducting wires loaded with regularly spaced Josephson junctions (critical current Ic ≈ 0.25 µA) spanning a K-band waveguide and aligned with the microwave electric fields create a superconducting dielectric metamaterial. Applied dc current tunes the cutoff frequency and effective permittivity of this unique electric metamaterial. The results are in agreement with an analytical model for microwave transmission through the artificial dielectric medium.

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“…Metamaterial, made up of SRRs or molecules which consist of SRRs, e.g. extended metal atom chains, becomes a new branch of study 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 . Many new directions are developed, such as electromagnetic cloaking 38 39 40 41 42 43 , toroidal moment 44 , liquid crystal magnetic control 45 , etc.…”

mentioning

confidence: 99%

Optical properties of drug metabolites in latent fingermarks

Shen

2016

Sci Rep

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Drug metabolites usually have structures of split-ring resonators (SRRs), which might lead to negative permittivity and permeability in electromagnetic field. As a result, in the UV-vis region, the latent fingermarks images of drug addicts and non drug users are inverse. The optical properties of latent fingermarks are quite different between drug addicts and non-drug users. This is a technic superiority for crime scene investigation to distinguish them. In this paper, we calculate the permittivity and permeability of drug metabolites using tight-binding model. The latent fingermarks of smokers and non-smokers are given as an example.

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Negative and near zero refraction metamaterials based on permanent magnetic ferrites

Cited by 25 publications

References 32 publications

Resonant microwave fields and negative magnetic response, induced by displacement currents in dielectric rings: theory and the first experiments

Resonant microwave fields and negative magnetic response, induced by displacement currents in dielectric rings: theory and the first experiments

Tunable superconducting Josephson dielectric metamaterial

Optical properties of drug metabolites in latent fingermarks

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