Nonreciprocal acoustic transmission in space-time modulated coupled resonators

Chen Shen, Xiaohui Zhu, Junfei Li, Steven A. Cummer

Research output: Contribution to journalArticlepeer-review

44 Scopus citations


Systems that break reciprocity offer new possibilities for controlling wave propagation. Here we study the scattering properties of coupled resonator systems that are under dynamic modulation. Strong linear nonreciprocal transmission is manifested in the acoustic regime by introducing an initial spatial phase bias to the space-time modulated coupled resonators. A theoretical model is developed to characterize the system and the results are in good agreement with experimental observations. Our work opens up new opportunities for designing compact nonreciprocal devices and developing acoustic topological insulators.

Original languageEnglish (US)
Article number054302
JournalPhysical Review B
Issue number5
StatePublished - Aug 6 2019
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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