Acoustic radiation pressure for nonreciprocal transmission and switch effects

Thibaut Devaux, Alejandro Cebrecos, Olivier Richoux, Vincent Pagneux and Vincent Tournat ()
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Thibaut Devaux: CNRS, Le Mans Université
Alejandro Cebrecos: CNRS, Le Mans Université
Olivier Richoux: CNRS, Le Mans Université
Vincent Pagneux: CNRS, Le Mans Université
Vincent Tournat: CNRS, Le Mans Université

Nature Communications, 2019, vol. 10, issue 1, 1-8

Abstract: Abstract Systems capable of breaking wave transmission reciprocity have recently led to tremendous developments in wave physics. We report herein on a concept that enables one-way transmission of ultrasounds, an acoustic diode, by relying on the radiation pressure effect. This effect makes it possible to reconfigure a multilayer system by significantly deforming a water-air interface. Such a reconfiguration is then used to achieve an efficient acoustic transmission in a specified direction of propagation but not in the opposite, hence resulting in a highly nonreciprocal transmission. The corresponding concept is experimentally demonstrated using an aluminum-water-air-aluminum multilayer system, providing the means to overcome key limitations of current nonreciprocal acoustic devices. We also demonstrate that this diode functionality can even be extended to the design and operations of an acoustic switch, thus paving the way for new wave control possibilities, such as those based on acoustic transistors, phonon computing and amplitude-dependent filters.

Date: 2019
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DOI: 10.1038/s41467-019-11305-7

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