Title :
Optimization of cloaking in all dielectric multi-layer structures
Author :
Mirzaei, Abdolreza ; Shadrivov, I.V. ; Miroshnichenko, Andrey E. ; Kivshar, Yuri S.
Author_Institution :
Nonlinear Phys. Center & Center for Ultra-high bandwidth Devices for Opt. Syst. (CUDOS), Australian Nat. Univ., Canberra, ACT, Australia
Abstract :
We employ a genetic algorithm to design multi-layer all-dielectric nanostructures with optimally reduced scattering cross-section. Using isotropic, homogeneous and nonmagnetic materials described by experimental data, our approach allows near 80 fold suppression of scattering cross section in optical wavelengths. We cover several dielectric cylindrical scatterers and demonstrate that after limited number of coating layers, adding more coatings does not result in improving the cloaking.
Keywords :
conductors (electric); genetic algorithms; invisibility cloaks; magnetic materials; nanostructured materials; scattering; cloaking optimization; dielectric cylindrical scatterers; dielectric multilayer structures; genetic algorithm; homogeneous materials; isotropic materials; multilayer all-dielectric nanostructures; nonmagnetic materials; optical wavelengths; scattering cross-section; Coatings; Dielectrics; Gallium arsenide; Genetic algorithms; Optimization; Scattering;
Conference_Titel :
Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2014 8th International Congress on
Conference_Location :
Lyngby
Print_ISBN :
978-1-4799-3450-8
DOI :
10.1109/MetaMaterials.2014.6948649
