Three-dimensional broadband ground-plane cloak made of metamaterials
Hui Feng Ma,Tie Jun Cui +1 more
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TLDR
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.Abstract:
Optical cloaking has already been demonstrated in two dimensions, and also in three dimensions for a limited range of angles. Now, Ma and Cui present a metamaterial-based cloaking device that can shield an object lying on the ground plane from all viewing angles at microwave frequencies.read more
Citations
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Journal ArticleDOI
Coding metamaterials, digital metamaterials and programmable metamaterials
TL;DR: Digital metamaterials consisting of two kinds of unit cells whose different phase responses allow them to act as ‘0’ and ‘1’ bits are developed to enable controlled manipulation of electromagnetic waves.
Journal ArticleDOI
Gradient-index meta-surfaces as a bridge linking propagating waves and surface waves
TL;DR: It is demonstrated theoretically and experimentally that a specific gradient-index meta-surface can convert a PW to a SW with nearly 100% efficiency, and may pave the way for many applications, including high-efficiency surface plasmon couplers, anti-reflection surfaces, light absorbers, and so on.
Posted Content
Coding Metamaterials, Digital Metamaterials and Programming Metamaterials
TL;DR: In this paper, Wu et al. proposed a digital metamaterial with two kinds of unit cells with 0 and π phase responses, which they named as "0" and "1" elements.
Journal ArticleDOI
An ultrathin invisibility skin cloak for visible light
TL;DR: In this article, an ultrathin invisibility skin cloak is proposed to cover a 3D arbitrarily shaped object by complete restoration of the phase of the reflected light at 730-nanometer wavelength.
Journal ArticleDOI
Broadband diffusion of terahertz waves by multi-bit coding metasurfaces
Gao Lihua,Qiang Cheng,Jing Yang,Shaojie Ma,Jie Zhao,Shuo Liu,Chen Haibing,Qiong He,Wei Xiang Jiang,Hui Feng Ma,Qi-Ye Wen,Lanju Liang,Lanju Liang,Biaobing Jin,Weiwei Liu,Lei Zhou,Jianquan Yao,Peiheng Wu,Tie Jun Cui +18 more
TL;DR: The proposed method offers a new way to control scattering of terahertz waves and can be implemented using conventional lithography, and it is shown that multi-bit coding metasurfaces have strong abilities to control teraHertz waves by designing-specific coding sequences.
References
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Journal ArticleDOI
Controlling Electromagnetic Fields
TL;DR: This work shows how electromagnetic fields can be redirected at will and proposes a design strategy that has relevance to exotic lens design and to the cloaking of objects from electromagnetic fields.
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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Determination of effective permittivity and permeability of metamaterials from reflection and transmission coefficients
TL;DR: In this article, the authors analyzed the reflection and transmission coefficients calculated from transfer matrix simulations on finite lengths of electromagnetic metamaterials, to determine the effective permittivity and permeability.
Journal ArticleDOI
Optical cloaking with metamaterials
TL;DR: This work presents the design of a non-magnetic cloak operating at optical frequencies, and the principle and structure of the proposed cylindrical cloak are analysed and the general recipe for the implementation of such a device is provided.
Journal ArticleDOI
Achieving transparency with plasmonic and metamaterial coatings
TL;DR: Here it is seen how a proper design of these lossless metamaterial covers near their plasma resonance may induce a dramatic drop in the scattering cross section, making these objects nearly "invisible" or "transparent" to an outside observer--a phenomenon with obvious applications for low-observability and noninvasive probe design.