Now showing items 1-6 of 6
Response of dispersive cylindrical cloaks to a nonmonochromatic plane wave
The transmission line modeling method is used to get the time domain response of a dispersive cylindrical cloak to an electromagnetic (EM) plane wave that is slightly nonmonochromatic. Our objective is to numerically study ...
Importance of the singular constitutive parameters of cylindrical cloaks : illustration on the anticloak concept
Two-dimensional electromagnetic cloaking devices with infinite optic constants at the inner boundary are investigated. Numerical simulations of this class of ideal cloak, performed with the transmission line modeling method, ...
Optical delay of a signal through a dispersive invisibility cloak
We present a full-wave analysis method on the transmission of a Gaussian light pulse through a spherical invisibility cloak with causal dispersions. The spatial energy distribution of the Gaussian light pulse is distorted ...
High directive antenna with virtual aperture
In this article, we propose a spherical shell-core structure which is able to achieve arbitrarily large directivity. The structure is obtained from coordinate transformation. A small antenna can be projected to free space ...
Lorentz force and radiation pressure on a spherical cloak
The mechanical behavior of a transformation based spherical cloak under wave illumination is derived. We show that the equatorial region of the cloak is subject to much higher stress than the polar regions, where the polar ...
Route to low-scattering cylindrical cloaks with finite permittivity and permeability
The method of coordinate transformation offers a way to realize perfect cloaks but provides less ability to characterize the performance of a multilayered cloak in practice. Here, we propose an analytical model to predict ...