Unidirectional acoustic transmission based on source pattern reconstruction
- 15 September 2012
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 112 (6), 064504
- https://doi.org/10.1063/1.4752407
Abstract
It is demonstrated both theoretically and experimentally that unidirectional acoustic transmission can be achieved through a simple structure consisting of only a uniform stiff plate and periodic rectangular gratings. Essentially distinct from the previous related works based on the utilizing of nonlinear effect or the partial band of the sonic crystal, it is attributed to one-side pattern reconstruction of acoustic plane waves induced by the periodic gratings, which can be physically modeled by forced vibration of the plate under periodic loads. The current structure takes the advantages of high transmission efficiency, small size, and broad bandwidth, which should open more possibilities for the miniaturization and integration of the one-way acoustic devices as well as further improvement of their performance.Keywords
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