Superscattering of Underwater Sound via Deep Learning Approach

We design a multilayer cylindrical structure to realize superscattering of underwater sound. Because of the near degeneracy of resonances in multiple channels of the structure, the scattering contributions from these resonances can overlap to break the single-channel limit of subwavelength objects. However, tuning the design parameters to achieve the target response is an optimization process that is tedious and time-consuming. Here,we demonstrate that a well-trained tandem neural network can de...     

双负超颖材料中的声学界面波

声学超颖材料中可以观察到声学界面波的存在.超胞方法被用来研究这种存在于非完全禁带中的界面波的色散关系和本征场分布.进一步,等效介质理论被用来证明这种界面波模式是由声学超颖材料的双负响应引起的.通过利用这种界面波模式,可以获得用于超声成像的声学超透镜.