Demonstration of Scattering Suppression by a Near-Zero-Index Metamaterial Composed of Dielectric Spheres

被引：4
作者：
Takano, Yuma [1 ]
Sanada, Atsushi [1 ]
机构：
[1] Osaka Univ, Grad Sch Engn Sci, Osaka 5608531, Japan
来源：
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2018年 / 66卷 / 09期
关键词：
Dielectric spheres; invisibility cloaks; Mie resonance; near-zero-index metamaterials (NZIMs); scattering suppression; ELECTROMAGNETIC RESONANCES; PHOTONIC CRYSTALS;
D O I：
10.1109/TMTT.2018.2858822
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We demonstrate microwave scattering suppression by a near-zero-index metamaterial (NZIM) composed of dielectric spheres. The NZIM is designed based on numerical simulations, and is shown by near-field measurements that the medium with dielectric spheres of yttria-stabilized zirconia with the dielectric constant 34 and the radius 1.5 mm arranged in a hexagonal lattice of the lattice constant 3.5 mm exhibits near-zero-index operations with a long wavelength of 22.51 GHz. It is also confirmed that the scattering by a defect of seven adjacent absent spheres is sufficiently suppressed by the NZIM.
引用
收藏
页码：3921 / 3926
页数：6
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