Design Anisotropic Broadband 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>ϵ</mml:mi></mml:math>
-Near-Zero Metamaterials: Rigorous Use of Bergman and Milton Spectral Representations

Sun, Lei; Yu, Kin Wah; Wang, Guo Ping

doi:10.1103/physrevapplied.9.064020

Cited by 7 publications

(3 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…ε // ≈ 0, ε ⊥ ̸ = 0 and ε // ̸ = 0, ε ⊥ ≈ 0 correspond to two types of AENZ media with flat IFCs along ⊥ and // directions, respectively. In order to overcome the narrow-band characteristics of AENZ media constructed by metal/dielectric multilayers, an optimized stepped structure is proposed to design broadband AENZ media [160,161]. In addition, the AENZ media have also been proposed based on the 2D PCs beyond the long-wavelength limitation [162].…”

Section: Metal/dielectric Multilayered Zimsmentioning

confidence: 99%

Zero-index and hyperbolic metacavities: fundamentals and applications

Guo

Jiang

Chen

2021

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

As a basic building block, optical resonant cavities (ORCs) are widely used in light manipulation. They can confine electromagnetic waves and improve the interaction between light and matter, which also plays an important role in cavity quantum electrodynamics, nonlinear optics and quantum optics. In recent years, the rise of metamaterials, artificial materials composed of subwavelength unit cells, has greatly enriched the design and functionality of ORCs. Here, we review zero-index hyperbolic metamaterials for constructing novel ORCs. First, this paper introduces the classification and implementation of zero-index hyperbolic metamaterials. Second, the distinctive properties of zero-index and hyperbolic cavities are summarized, including geometric invariance, homogeneous/inhomogeneous field distribution, topological protection (anomalous scaling law, size independence, continuum of higher-order modes, and dispersionless modes) for zero-index (hyperbolic) metacavities. Finally, the paper introduces some typical applications of zero-index and hyperbolic metacavities, and advances the research of metacavities.

show abstract

Section: Metal/dielectric Multilayered Zimsmentioning

confidence: 99%

Zero-index and hyperbolic metacavities: fundamentals and applications

Guo

Jiang

Chen

2021

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…More importantly, the layered metamaterials can be designed with a sophisticated microstructure to operate across a broad range of frequencies, e.g. the broadband absorber [13,14], the broadband epsilon-near-zero (ENZ) metamaterials [15][16][17][18][19][20][21], and others [22]. Inspired by metamaterials, metactronics [23], also named as metatronics [24], is promoted to develop new technologies with fantastical functions by fusing metamaterials with nanoelectronics and nanophotonics.…”

Section: Introductionmentioning

confidence: 99%

Precise one-to-one equivalent nanocircuit models for layered metamaterials

Ding,

Rao,

et al. 2024

New J. Phys.

Self Cite

View full text Add to dashboard Cite

A precise one-to-one equivalent nanocircuit model for layered metamaterials is presented in this work. The theoretical analysis establishes a precise link between the nanocircuit system and the optical ﬁlm system by comparing between the optical transfer matrix of an optical ﬁlm and the transmission matrix of the distributed-element model. Through dimensional analysis, the connection between the optical properties of the ﬁlm and the distributed circuit components of the transmission line is revealed. Subsequently, the lumped-element model is simpliﬁed to the distributed-element model for nonmagnetic ﬁlms with diﬀerent optical features. Finally, the lumped-element model is further applied to multilayer metamaterials with diﬀerent microstructures. All analysis is conﬁrmed through the agreement between the S-parameters of the equivalent nanocircuit model and the reﬂection and transmission coeﬃcients of the layered metamaterials.

show abstract

“…However, all of them are confined at a single operating frequency or a narrow frequency range. Based on the studies on the broadband optical response of metamaterials [25] and on the dynamic-controllable metamaterials [26], previous research has already suggested methods, numerically [27][28][29] and theoretically [30][31][32][33][34][35][36], to achieve the broadband ENZ metamaterials with various microstructures but of great anisotropic properties, which The (a) two-dimensional and (b) three-dimensional schematic profile of one unit cell of the all-angle broadband ENZ metamaterial with respect to the probing electromagnetic wave. The unit cell effectively contains N = 6 layers, in which the 6th layer is placed in the centre, and other five layers are symmetrically placed on the two sides.…”

Section: Introductionmentioning

confidence: 99%

All-angle broadband ENZ metamaterials

Sun

Lin

et al. 2022

New J. Phys.

Self Cite

View full text Add to dashboard Cite

A novel type of metamaterial is presented to produce broadband near-zero effective permittivity to a defined polarized probing electromagnetic wave with varying angles of incidence. The metamaterial has a uniaxial unit cell structure made up of symmetric periodic multilayer superlattices with a rotational symmetry about the polarization of the probing electromagnetic wave. The unit cell is rigorously constructed based on the Bergman–Milton spectral representation of the effective permittivity, and its electrodynamic properties are theoretically verified by the eigenmode analysis, the band structure, the dispersion relation, and the isofrequency contours. The eigenmode analysis illustrates that the unit cell can be effectively regarded as a photonic crystal or a waveguide according to the incidence direction of the probing electromagnetic wave, and either of them is of the dynamic microstructure related to the frequency, which results in a broadband response. Meanwhile, the band structure, the dispersion relation, and the isofrequency contours show that the unit cell has the near-zero effective permittivity at all angles of incidence of the specified polarized probing electromagnetic wave. Finally, the reflection/transmission/absorption spectra to the prescribed polarization probing electromagnetic wave vividly reveal the all-angle broadband near-zero effective permittivity property of the metamaterial.

show abstract

Design Anisotropic Broadband ϵ -Near-Zero Metamaterials: Rigorous Use of Bergman and Milton Spectral Representations

Cited by 7 publications

References 56 publications

Zero-index and hyperbolic metacavities: fundamentals and applications

Zero-index and hyperbolic metacavities: fundamentals and applications

Precise one-to-one equivalent nanocircuit models for layered metamaterials

All-angle broadband ENZ metamaterials

Contact Info

Product

Resources

About