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Published October 18, 2017 | Supplemental Material
Journal Article Open

Reprogrammable Phononic Metasurfaces


Phononic metamaterials rely on the presence of resonances in a structured medium to control the propagation of elastic waves. Their response depends on the geometry of their fundamental building blocks. A major challenge in metamaterials design is the realization of basic building blocks that can be tuned dynamically. Here, a metamaterial plate is realized that can be dynamically tuned by harnessing geometric and magnetic nonlinearities in the individual unit cells. The proposed tuning mechanism allows a stiffness variability of the individual unit cells and can control the amplitude of transmitted excitation through the plate over three orders of magnitude. The concepts can be extended to metamaterials at different scales, and they can be applied in a broad range of engineering applications, from seismic shielding at low frequency to ultrasonic cloaking at higher frequency ranges.

Additional Information

© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Received: February 3, 2017; Revised: May 15, 2017; Published online: August 25, 2017. The authors thank T. Jung for help with the additive manufacturing. This work was supported by the ETH Postdoctoral Fellowship FEL-26 15-2 to O.R. Bilal and ETH Grant No. ETH-24 15-2. The authors declare no conflict of interest.

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August 21, 2023
October 17, 2023