Open AccessBroadband diffusion metasurface based on a single anisotropic element and optimized by the Simulated Annealing algorithm
Author(s) -
Yuxia Zhao,
Xiangyu Cao,
Jun Gao,
Yu Sun,
Huanhuan Yang,
Xiao Liu,
Yulong Zhou,
Tong Han,
Wei Chen
Publication year - 2016
Publication title -
scientific reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.24
H-Index - 213
ISSN - 2045-2322
DOI - 10.1038/srep23896
Subject(s) - simulated annealing , broadband , metamaterial , anisotropy , scattering , computer science , annealing (glass) , algorithm , coding (social sciences) , materials science , optics , optoelectronics , physics , telecommunications , mathematics , statistics , composite material
We propose a new strategy to design broadband and wide angle diffusion metasurfaces. An anisotropic structure which has opposite phases under x- and y-polarized incidence is employed as the “0” and “1” elements base on the concept of coding metamaterial. To obtain a uniform backward scattering under normal incidence, Simulated Annealing algorithm is utilized in this paper to calculate the optimal layout. The proposed method provides an efficient way to design diffusion metasurface with a simple structure, which has been proved by both simulations and measurements.