Showing 2 results for Invisibility Cloak
Mr Mohammadreza Forouzeshfard, Prof. Tomas Tyc, Dr. Mahmood Hosseini Farzad,
Volume 8, Issue 2 (7-2014)
Abstract
Based on transformation optics, we propose an illusion device that can make objects look much smaller and different than they actually are. In particular, the device has a capability to hide a large object (like an elephant) into a small one (like a matchbox). Compared to previous proposals for illusion devices, there is no requirement for negative refractive index or for speed of light going to infinity as in Euclidean invisible cloaks. We demonstrate the functionality of the device by full wave simulations.
Mr Hossein Vejdani Shoja, Dr Ali Arab, Mrs Minoo Shojaei Far,
Volume 9, Issue 1 (1-2015)
Abstract
In this paper, an ideal cylindrical metamaterial invisibility cloak with infinite-length which its electric permittivity and magnetic permeability mapped to the Drude dispersion model is simulated. The sinusoidal plane waves with microwave frequencies used as sources. To this end, the dispersive finite-difference time-domain method (FDTD) used with Convolutional Perfectly Matched Layered (CPML) absorbing boundaries conditions. A comparison performed between scattering of cloaked and non-cloaked PEC cylinder. And finally, the influence of incident wave frequency, thickness of cloak and observer angle relative to the propagation line to performance of cloak, was surveyed.
