Journal
PHYSICAL REVIEW B
Volume 99, Issue 13, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.99.134306
Keywords
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Funding
- Multidisciplinary University Research Initiative grant from the Office of Naval Research [N00014-13-1-0631]
- Emerging Frontiers in Research and Innovation grant from the National Science Foundation [1641084]
- Directorate For Engineering
- Emerging Frontiers & Multidisciplinary Activities [1641084] Funding Source: National Science Foundation
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Systems that break transport reciprocity have recently opened exciting possibilities for wave manipulation. Here we report nonreciprocal acoustic transmission in cascaded resonators that are modulated in space and time. An analytic approach is developed and the design strategy is discussed for realizing a physical system based on this approach. The theory is verified numerically by finite-difference time-domain (FDTD) simulations, with a one-way isolation factor greater than 25 dB out of just two resonators. Our work provides a feasible route to achieve nonreciprocal acoustic transmission in a compact manner.
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