标题： 声波导中的单向声子隔离 显示英文标题

标题： One-way Phonon Isolation In Acoustic Waveguides

摘要： 我们提出了一种方法，通过考虑材料属性的时空调制，在声波导中实现单向模式隔离。利用这种方法，展示了无限大平板声波导中对称和反对称剪切水平（SH）模式之间的模式转换。提供了模式转换可能性的分析和数值证据。还建议了可能的实验实现以及在MEMS器件中芯片信号隔离的应用。 显示英文摘要

摘要： We present a method to achieve one-way mode isolation in acoustic waveguides by considering spatio-temporal modulation of material properties. Mode conversion between symmetric and antisymmetric shear horizontal (SH) modes of an unbounded plate acoustic waveguide is demonstrated using this method. Analytical and numerical evidence for the possibility of mode conversion is presented. Possible experimental implementation and applications for on chip signal isolation in MEMS devices are also suggested.