盘绕型声学超构材料的近零折射率特性研究

陈佳惠, 蓝君, 王浩然, 李义丰

Research on near⁃zero refraction characteristics of coiled acoustic metamaterials

Jiahui Chen, Jun Lan, Haoran Wang, Yifeng Li

图2 圆形盘绕型基本单元的等效参数 (a) real part (solid line) and imaginary part (dashed line) of the equivalent sound velocity veff, (b) real part (solid line) and imaginary part (dashed line) of the equivalent mass density ρeff, (c) equivalent impedance Z,transmission coefficient T,reflection coefficient R and refraction index n

Fig.2 Equivalent parameters of the circular coiled unit