What is it about?

Metamaterials are used to obtain exceptional control over wave energy in mechanical systems (i.e., elastic waves). Topological phases are incorporated into metamaterials to achieve lossless and directional propagation of wave energy. In this letter, we advance the state of the art by proposing a programmable 3D topological metamaterial that can be tuned via metastability. We investigate how lossless energy transfer can be obtained in a 3D mechanical structure and how elastic wave networks can be created by harnessing various topological states.

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Why is it important?

By taking advantage of the adaptivity of the proposed metamaterial, multiple topological states are connected and adjusted on-demand, a bilayer-locked topological state is discovered, and 3D elastic wave networks with advanced filtering and splitting capabilities are realized.

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This page is a summary of: Emergence of bilayer-locked states and synthesis of elastic wave networks in a programmable 3D topological metamaterial, Applied Physics Letters, May 2022, American Institute of Physics, DOI: 10.1063/5.0094184.
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