Design of two invisibility cloaks using transmissive and reflective metamaterial-based multilayer frame microstructures
Xufeng Jing,Dantian Feng,Ying Tian,Meng Li,Chengfei Chu,Chenxia Li,Yingwei He,Haiyong Gan,Zhi Hong +8 more
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TLDR
A transmissive free-space cloak was developed using a multilayer frame structure, wherein highly transparent metamaterials were used to guide incident waves into propagating around an object.Abstract:
Ultrathin metamaterials provide new possibilities for the realization of cloaking devices because of their ability to control electromagnetic waves. However, applications of metamaterials in cloaking devices have been limited primarily to reflection-type carpet cloaks. Hence, a transmissive free-space cloak was developed using a multilayer frame structure, wherein highly transparent metamaterials were used to guide incident waves into propagating around an object. The cloaking effect was quantitatively verified using near-field and far-field distributions. Metamaterials allow for the cloaking shells of transmissive cloaks to be developed without spatially varying extreme parameters. Moreover, a transmissive invisible cloak with metamaterial-based mirrors was designed. The design principle of this cloak with a frame structure consists of four metamaterial-based mirrors and two metal mirrors. After covered with the designed metamaterials-based mirrors cloak, the outgoing electromagnetic wave is restored greatly as if the wave passes directly through the obstacle without distortion. This cloak used the metamaterials mirrors to adjust the reflected angle, so that the outgoing electromagnetic wave does not change direction, thereby achieving the cloaking effect.read more
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Realization of frequency hopping characteristics of an epsilon negative metamaterial with high effective medium ratio for multiband microwave applications
Mohammad Tariqul Islam,Moniruzzaman,Touhidul Alam,Samsuzzaman,Qutaiba A. Razouqi,Ali F. Almutairi +5 more
TL;DR: In this paper, a meander-lines-based epsilon negative (ENG) metamaterial (MTM) with a high effective medium ratio (EMR) and near zero refractive index (NZI) is designed and investigated for multiband microwave applications.
Journal ArticleDOI
Lead‐Free Piezoelectric Composite Based on a Metamaterial for Electromechanical Energy Conversion
Zehuan Wang,Jin Cheng,Yan Xie,Yunhan Wang,Zhonghui Yu,Shuai Li,Liuting Li,Shuxiang Dong,Hong Na Wang +8 more
TL;DR: In this paper , a novel method is introduced for fabricating high performance barium titanate (BaTiO3) and polydimethylsiloxane composites based on three-dimensional (3D)printing-ordered structure of a metamaterial skeleton.
Journal ArticleDOI
Overview of Metamaterials-Integrated Antennas for Beam Manipulation Applications: The Two Decades of Progress
TL;DR: In this article , a detailed study of using the MMs to manipulate the radiation is carried out, where different properties such as the positive/negative refractive index, epsilon-near-zero (ENZ), and mu near zero (MNZ) are employed to achieve a beam-deflection antenna.
Journal ArticleDOI
Overview of Metamaterials-Integrated Antennas for Beam Manipulation Applications: The Two Decades of Progress
TL;DR: This review study provides an introduction to MMs, focusing on their electromagnetic properties, classification, and design approaches, and a detailed study of using the MMs to manipulate the radiation is carried out, where different properties such as the positive/negative refractive index, epsilon-near-zero, and mu near-zero are employed to achieve a beam-deflection antenna.
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Double-E-Triple-H-Shaped NRI-Metamaterial for Dual-Band Microwave Sensing Applications
Shafayat Hossain,Md. Iquebal Hossain Patwary,Sikder Sunbeam Islam,Sultan Mahmud,Norbahiah binti Misran,Ali F. Almutairi,Mohammad Tariqul Islam +6 more
TL;DR: In this article , a double-E-Triple-H-Shaped NRI (negative refractive index) metamaterial (MM) was proposed for dual-band microwave sensing applications.
References
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Journal ArticleDOI
Metamaterial Electromagnetic Cloak at Microwave Frequencies
David Schurig,Jack J. Mock,B.J. Justice,Steven A. Cummer,John B. Pendry,Anthony F. Starr,David R. Smith +6 more
TL;DR: This work describes here the first practical realization of a cloak of invisibility, constructed with the use of artificially structured metamaterials, designed for operation over a band of microwave frequencies.
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Flat Optics With Designer Metasurfaces
Nanfang Yu,Federico Capasso +1 more
TL;DR: This Review focuses on recent developments on flat, ultrathin optical components dubbed 'metasurfaces' that produce abrupt changes over the scale of the free-space wavelength in the phase, amplitude and/or polarization of a light beam.
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Three-dimensional broadband ground-plane cloak made of metamaterials
Hui Feng Ma,Tie Jun Cui +1 more
TL;DR: The first practical implementation of a fully 3D broadband and low-loss ground-plane cloak at microwave frequencies is realized, realized by drilling inhomogeneous holes in multi-layered dielectric plates.
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Mantle cloak: Invisibility induced by a surface
TL;DR: In this paper, a patterned metasurface may produce similar cloaking effects in a simpler and thinner geometry, where the currents induced on a passive surface are tailored to drastically suppress the visibility of a given object.
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A full-parameter unidirectional metamaterial cloak for microwaves
TL;DR: This work design and experimentally characterize a two-dimensional, unidirectional cloak that makes no approximations to the underlying transformation optics formulation, yet is capable of reducing the scattering of an object ten wavelengths in size and regains the performance characteristics promised by transformation optics.