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Programming nonreciprocity and reversibility in multistable mechanical metamaterials

Author

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  • Gabriele Librandi

    (John A. Paulson School of Engineering and Applied Sciences, Harvard University)

  • Eleonora Tubaldi

    (Department of Mechanical Engineering, University of Maryland)

  • Katia Bertoldi

    (John A. Paulson School of Engineering and Applied Sciences, Harvard University)

Abstract

Nonreciprocity can be passively achieved by harnessing material nonlinearities. In particular, networks of nonlinear bistable elements with asymmetric energy landscapes have recently been shown to support unidirectional transition waves. However, in these systems energy can be transferred only when the elements switch from the higher to the lower energy well, allowing for a one-time signal transmission. Here, we show that in a mechanical metamaterial comprising a 1D array of bistable arches nonreciprocity and reversibility can be independently programmed and are not mutually exclusive. By connecting shallow arches with symmetric energy wells and decreasing energy barriers, we design a reversible mechanical diode that can sustain multiple signal transmissions. Further, by alternating arches with symmetric and asymmetric energy landscapes we realize a nonreciprocal chain that enables propagation of different transition waves in opposite directions.

Suggested Citation

  • Gabriele Librandi & Eleonora Tubaldi & Katia Bertoldi, 2021. "Programming nonreciprocity and reversibility in multistable mechanical metamaterials," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-23690-z
    DOI: 10.1038/s41467-021-23690-z
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    Cited by:

    1. Junghwan Byun & Aniket Pal & Jongkuk Ko & Metin Sitti, 2024. "Integrated mechanical computing for autonomous soft machines," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
    2. Tie Mei & Chang Qing Chen, 2023. "In-memory mechanical computing," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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