Complementary media invisibility cloak that cloaks objects at a distance outside the cloaking shell.
TLDR
An invisibility cloak operating at a finite frequency that can cloak an object with a prespecified shape and size within a certain distance outside the shell is proposed.Abstract:Â
Based on the concept of complementary media, we propose an invisibility cloak operating at a finite frequency that can cloak an object with a prespecified shape and size within a certain distance outside the shell. The cloak is comprised of a dielectric core and an "antiobject" embedded inside a negative index shell. The cloaked object is not blinded by the cloaking shell since it lies outside the cloak. Full-wave simulations in two dimensions have been performed to verify the cloaking effect.read more
Citations
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Journal ArticleDOI
Transformation optics and metamaterials
TL;DR: The potential of transformation optics to create functionalities in which the optical properties can be designed almost at will is reviewed, which can be used to engineer various optical illusion effects, such as the invisibility cloak.
Journal ArticleDOI
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.
Journal ArticleDOI
Hybrid elastic solids
TL;DR: This work presents a design of elastic metamaterial that exhibits multiple resonances in its building blocks and shows two negative dispersion bands, of which one supports only compressional waves and thereby blurs the distinction between a fluid and a solid over a finite frequency regime.
Journal ArticleDOI
Acoustic cloaking and transformation acoustics
TL;DR: In this article, the authors give a brief introduction to the application of the new technique of transformation acoustics, which draws on a correspondence between coordinate transformation and material properties and is formulated for both acoustic waves and linear liquid surface waves.
Journal ArticleDOI
Information entropy of coding metasurface
Tie Jun Cui,Shuo Liu,Lianlin Li +2 more
TL;DR: This work establishes an analytical connection between the coding pattern of an arbitrary coding metasurface and its far-field pattern, and introduces geometrical entropy and physical entropy to describe the information of the far- field pattern of the metAsurface.
References
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Journal ArticleDOI
Solutions in folded geometries, and associated cloaking due to anomalous resonance
TL;DR: In this paper, it is shown that the unfolded material can act as an impedance matched hyperlens, and as the loss in the lens goes to zero finite collections of polarizable line dipoles lying within a critical region surrounding the hyper-lens are cloaked having vanishingly small dipole moments.
Journal ArticleDOI
Reshape the perfect electrical conductor cylinder at will
TL;DR: In this article, a general method is proposed to design the cylindrical cloak, concentrator and superscatterer with arbitrary cross section, and the method is demonstrated by the design of a perfect electrical conductor (PEC) reshaper which is able to reshape a PEC cylinder arbitrarily by combining the concept of cloaking and concentrator together.
Posted Content
Necessary and sufficient conditions for reflectionless transformation media in an isotropic and homogenous background
TL;DR: In this article, the outer boundary coordinates of a reflectionless transformation medium must be the same as the original coordinates with a combination of rotation and displacement, which is equivalent to situation that the boundary coordinates are kept intact before and after transformation.
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A new strategy to conceal an object from electromagnetic wave
TL;DR: Wang et al. as mentioned in this paper proposed a new recipe for concealing objects from detection, which guides the light to penetrate the core of the cloak but without striking some region of the cloaking shell.
Journal ArticleDOI
Solutions in folded geometries, and associated cloaking due to anomalous resonance
TL;DR: In this paper, it is shown that the unfolded material can act as an impedance matched hyperlens, and as the loss in the lens goes to zero finite collections of polarizable line dipoles lying within a critical region surrounding the hyper-lens are cloaked having vanishingly small dipole moments.