Bistable metamaterial for switching and cascading elastic vibrations.
- Bilal OR Institute of Theoretical Physics, ETH Zurich, 8093 Zurich, Switzerland; daraio@caltech.edu bilalo@ethz.ch.
- Foehr A Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland.
- Daraio C Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125 daraio@caltech.edu bilalo@ethz.ch.
- 2017-04-19
Published in:
- Proceedings of the National Academy of Sciences of the United States of America. - 2017
acoustic transistor
phonon switching and cascading
phononic computing
phononic metamaterials
tunable materials
English
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.
- Language
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- English
- Open access status
- bronze
- Identifiers
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- DOI 10.1073/pnas.1618314114
- PMID 28416663
- Persistent URL
- https://sonar.rero.ch/global/documents/217732
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