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A compact time reversal emitter-receiver based on a leaky random cavity.

ABSTRACT: Time reversal acoustics (TRA) has gained widespread applications for communication and measurements. In general, a scattering medium in combination with multiple transducers is needed to achieve a sufficiently large acoustical aperture. In this paper, we report an implementation for a cost-effective and compact time reversal emitter-receiver driven by a single piezoelectric element. It is based on a leaky cavity with random 3-dimensional printed surfaces. The random surfaces greatly increase the spatio-temporal focusing quality as compared to flat surfaces and allow the focus of an acoustic beam to be steered over an angle of 41°. We also demonstrate its potential use as a scanner by embedding a receiver to detect an object from its backscatter without moving the TRA emitter.

SUBMITTER: Luong TD

PROVIDER: S-EPMC5095765 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature

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A compact time reversal emitter-receiver based on a leaky random cavity.

Luong Trung-Dung TD Hies Thomas T Ohl Claus-Dieter CD

Scientific reports 20161104

Time reversal acoustics (TRA) has gained widespread applications for communication and measurements. In general, a scattering medium in combination with multiple transducers is needed to achieve a sufficiently large acoustical aperture. In this paper, we report an implementation for a cost-effective and compact time reversal emitter-receiver driven by a single piezoelectric element. It is based on a leaky cavity with random 3-dimensional printed surfaces. The random surfaces greatly increase the ...[more]

PMID: 27811957

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