Hou Zhilin, Liu Jingtao, Kuang Weimin, Liu Youyan, Wu Shuizhu
Department of Physics, South China University of Technology, Guangzhou 510640, China.
Phys Rev E Stat Nonlin Soft Matter Phys. 2007 Feb;75(2 Pt 2):026608. doi: 10.1103/PhysRevE.75.026608. Epub 2007 Feb 12.
An improved scattering matrix method is developed to study a two-dimensional air-rigid sonic crystal with open resonant cavity, and the band structure and transmission properties are investigated. Numerical results show that both the band structure and the transmission coefficient are sensitive to the shape of the resonant cavity. The relationship between the resonant band gap and the shape of the resonant cavity is given. The high effective refractive index and the transmission ratio in the long wave range make such a system a good material for a sound lens.
开发了一种改进的散射矩阵方法来研究具有开放谐振腔的二维空气-刚性声子晶体，并研究了其能带结构和传输特性。数值结果表明，能带结构和传输系数都对谐振腔的形状敏感。给出了谐振带隙与谐振腔形状之间的关系。长波范围内的高有效折射率和传输比使这种系统成为制作声透镜的良好材料。
