One-way phonon isolation in acoustic waveguides

  title={One-way phonon isolation in acoustic waveguides},
  author={Mehdi B. Zanjani and Arthur R. Davoyan and Ahmed Mohamed Mahmoud and Nader Engheta and Jennifer R. Lukes},
  journal={Applied Physics Letters},
We present a method to achieve one-way phonon isolation in acoustic waveguides by considering spatio-temporal modulation of material properties. One-way conversion between symmetric and antisymmetric shear horizontal modes of an unbounded plate acoustic waveguide is numerically 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… 

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