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Bistable metamaterial for switching and cascading elastic vibrations.

ABSTRACT: The realization of acoustic devices analogous to electronic systems, like diodes, transistors, and logic elements, suggests the potential use of elastic vibrations (i.e., phonons) in information processing, for example, in advanced computational systems, smart actuators, and programmable materials. Previous experimental realizations of acoustic diodes and mechanical switches have used nonlinearities to break transmission symmetry. However, existing solutions require operation at different frequencies or involve signal conversion in the electronic or optical domains. Here, we show an experimental realization of a phononic transistor-like device using geometric nonlinearities to switch and amplify elastic vibrations, via magnetic coupling, operating at a single frequency. By cascading this device in a tunable mechanical circuit board, we realize the complete set of mechanical logic elements and interconnect selected ones to execute simple calculations.

SUBMITTER: Bilal OR

PROVIDER: S-EPMC5422829 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature

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Bistable metamaterial for switching and cascading elastic vibrations.

Bilal Osama R OR Foehr André A Daraio Chiara C

Proceedings of the National Academy of Sciences of the United States of America 20170417 18

The realization of acoustic devices analogous to electronic systems, like diodes, transistors, and logic elements, suggests the potential use of elastic vibrations (i.e., phonons) in information processing, for example, in advanced computational systems, smart actuators, and programmable materials. Previous experimental realizations of acoustic diodes and mechanical switches have used nonlinearities to break transmission symmetry. However, existing solutions require operation at different freque ...[more]

PMID: 28416663

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