声在网络任意通路中的准无损传输
Acoustic quasi-lossless transmission in arbitrary pathway of network
摘要：
声学超材料在控制声波传播方面表现出了非凡的可能性。到目前为止，控制声波在网络的任意路径中的传播仍然是一个挑战。在这里，我们设计了一个对称破缺的十字形超材料由亥姆霍兹谐振单元和一个方柱。方柱偏心布置。声波在压缩空间的偏心方向通道中可以准无损传输，突破了一般的传输现象。这种奇异的传播特性通过超材料的能带结构和模式得到了验证。两个声学网络，包括2 × 2网络和8 × 8网络，表明通过重新配置偏心方向，声波可以沿着长城形、阶梯形和蛇形等任意路径准无损传播。这种能力为声波的路由开辟了新的途径，并展示了从声学通信到能量传输的有前景的应用。
英文摘要：
Acoustic metamaterials have exhibited extraordinary possibilities to manipulate the propagation of the sound wave. Up to now, it is still a challenge to control the propagation of the sound wave in an arbitrary pathway of a network. Here, we design a symmetry breaking cross-shape metamaterial comprised of Helmholtz resonant cells and a square column. The square column is eccentrically arranged. The sound wave can quasi-lossless transmit through channels along the eccentric direction with compressed spaces, which breaks through the general transmission phenomenon. This exotic propagation characteristic is verified by the band structure and the mode of the metamaterial. Two acoustic networks, including a 2x2 network and an 8x8 network, show that the sound wave can quasi-lossless propagate along various arbitrary pathways, such as the Great Wall shape, the stair step shape and the serpentine shape, by reconfiguring eccentric directions. This ability opens up a new venue to route the sound wave and exhibits promising applications, from the acoustic communication to the energy transmission.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
