Optimization of invisibility cloaks by surface integral equation method

The surface integral equation (SIE) and the method of moments (MoM) are combined with a genetic algorithm (GA) for the design of multilayer invisibility shells. Thickness and material composition of the layers are simultaneously optimized to minimize the scattering cross section (SCS). The proposed procedure brings the possibility of easily including different shape and/or material constraints on the cloak design, which indeed is of great interest for manufacturing purposes.