# Broadband Ground-Plane Cloak

@article{Liu2009BroadbandGC, title={Broadband Ground-Plane Cloak}, author={R. Liu and Chunlin Ji and Jack J. Mock and Jessie Yao Chin and Tiejun Cui and D. Robert Smith}, journal={Science}, year={2009}, volume={323}, pages={366 - 369} }

The possibility of cloaking an object from detection by electromagnetic waves has recently become a topic of considerable interest. The design of a cloak uses transformation optics, in which a conformal coordinate transformation is applied to Maxwell's equations to obtain a spatially distributed set of constitutive parameters that define the cloak. Here, we present an experimental realization of a cloak design that conceals a perturbation on a flat conducting plane, under which an object can be…

## 1,304 Citations

### Three-dimensional broadband ground-plane cloak made of metamaterials

- PhysicsNature communications
- 2010

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.

### Cloaking at Optical Frequencies

- Physics
- 2009

2 The ability of rendering objects invisible using a cloak – not detectable by an external observer – for concealing objects has been a tantalizing goal 1-6. Here, we demonstrate a cloak operating in…

### Practical realization of transformation-optics designed invisibility cloak through layered structures

- PhysicsProceedings of the 5th European Conference on Antennas and Propagation (EUCAP)
- 2011

The idea of cloaking objects from the observation by electromagnetic (EM) fields based on the recently proposed transformation optics requires anisotropic space-dependent inhomogeneous medium to…

### Wideband performance analysis of ground-plane cloak designed with polarization-independent randomly patterned metamaterial

- PhysicsScientific Reports
- 2018

A ground-plane cloak is designed based on the quasi-conformal mapping method to hide a perfectly conducting object, fabricated with a metamaterial, a mixture of a dielectric and air, to guarantee the statistical isotropy of the cloak structure.

### On the Sensitivity of Practical Electromagnetic Ground Plane Cloaks

- PhysicsIEEE Transactions on Antennas and Propagation
- 2012

A numerical study of the sensitivity of the two dimensional electromagnetic ground plane cloak in the visible spectrum is performed using the finite difference time domain method. Transverse magnetic…

### An optical cloak made of dielectrics.

- PhysicsNature materials
- 2009

The optical 'carpet' cloak is designed using quasi-conformal mapping to conceal an object that is placed under a curved reflecting surface by imitating the reflection of a flat surface and enables broadband and low-loss invisibility at a wavelength range of 1,400-1,800 nm.

### Natural granular pile as electromagnetic ground cloak

- Physics
- 2020

Rendering an object invisible through a cloaking device is an ongoing dream of human beings and material scientists. Recently, intensive theories and experiments have predicted and demonstrated that…

### Cloak an underground antenna using transformation electromagnetics

- Business2011 IEEE International Symposium on Antennas and Propagation (APSURSI)
- 2011

We present a scheme to realize a broadband antenna which is hidden under the ground but still possesses radiating performance with steerable beams as its free-space counterpart. This antenna is made…

### Experimental Realization of an Extreme-Parameter Omnidirectional Cloak

- PhysicsResearch
- 2019

This work reports on the first experimental demonstration of an omnidirectional cloak that satisfies the extreme parameters requirement, which can hide objects in a homogenous background using a nonresonant metamaterial comprising arrays of subwavelength metallic channels manufactured with 3D metal printing technology.

### Simplified ground plane invisibility cloak by multilayer dielectrics.

- PhysicsOptics express
- 2010

An alternative method to design the ground plane invisibility clock with electromagnetic beam modulation blocks through simple coordinate transformation discussed in the previous work is proposed and can leads to easy experimental demonstration of non-magnetic ground plane cloak in the frequency range from microwave to optical.

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