Bistable metamaterial for switching and cascading elastic vibrations

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....

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Bibliographic Details
Published in:Proceedings of the National Academy of Sciences - PNAS 2017-05, Vol.114 (18), p.4603-4606
Main Authors: Bilal, Osama R., Foehr, André, Daraio, Chiara
Format: Article
Language:English
Subjects:
Actuators
Computer applications
Data processing
Diodes
Electronic devices
Electronic systems
Information processing
Metamaterials
Phonons
Physical Sciences
Semiconductor devices
Switches
Switching
Transistors
Vibration
Vibrations
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Summary: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.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.1618314114