15:35 : Optical Carpet Cloaking Using Metamaterials
Mohamed M. Badr, Nourhan H. Fouad, Khaled G. Abdel-Wahab, Eslam M. Hefny, Kareem S. Elassy, Hussein H. Ghouz
Arab Academy for Science-Technology and Maritime Transport (Egypt) Invisibility has always been a science fiction, but due to the emergence of the metamaterials it is now turned to reality. In this paper, by using the mathematical approaches which are mixing rules of materials and transformation optics technique, we were able to design and simulate an optical carpet cloak operating at 700nm wavelength on COMSOL Multiphysics. We designed a triangular invisibility cloak with layered structure of alternative silicon air layers according to Transformation optics technique.
15:50 : Fano-induced cloaking of dielectric objects via Mie resonances
K. Samusev, M. Rybin, D. Filonov, P. Belov, Yury Kivshar, Mikhail Limonov
ITMO University (Russia) We reveal that the Fano resonances can be employed for achieving an efficient cloaking of dielectric structures with high refractive index at any angle of observation. Our finding is based on novel physics of the cascades of Fano resonances observed in the classical Mie scattering, and it is also verified by direct experimental results for switching of a water cylinder filled with water from visible to invisible regimes by changing dielectric permittivity of water with heating.
16:05 : Parallel transport design for gradient index lenses
David Schurig (1),S. Venkatesh (1),N. Korevarr (2)
(1)University of Utah ECE Department (USA) , (2)University of Utah Math Department (USA) The design of polarization dynamics through the connection to torsion and parallel transport is inexact for finite wavelength, since the approach relies on the ray curves of geometric optics. We compare the polarization fields of parallel-transport-designed, chirality-enhanced gradient index lenses from full-wave simulations with those of their geometric optic specification.