标题： 基于各向异性拓扑声子晶体的声学频率滤波器 显示英文标题

标题： Acoustic frequency filter based on anisotropic topological phononic crystals

摘要： 在构建经典波系统中的拓扑边缘态方面，正在出现越来越多的努力。 然而，大多数工作研究了边缘态的存在、产生和特性，而应用的演示是非常有必要的。 在这里，我们提出了一种二维各向异性声子晶体的设计，该晶体表现出可调的拓扑相。 我们进一步探讨了各向异性的影响，并表明带隙拓扑性也与特定方向和频率有关。 这种频率依赖的行为可以被用作频率滤波器。 显示英文摘要

摘要： There are growing efforts in constructing topological edge states in classical wave system. However, most of the work study the existence, creation and properties of the edge states, and the demonstration of application is highly desirable. Here, we present our design of a two-dimensional anisotropic phononic crystal that exhibits tunable topological phases. We further explore the contribution of anisotropy and show that the bandgap topology is also related to particular directions and frequency. Such frequency dependent behavior can be utilized as a frequency filter.