AI Article Synopsis
- A gradient-index crystal has been developed that allows for precise control over how elastic waves travel through it, offering significant tunability.
- The research showcases both numerically and experimentally how waves can bounce back in a boomerang motion when introduced to the crystal at small amplitudes.
- For larger amplitudes, the crystal exhibits nonlinear effects, allowing for asymmetric wave transmission from opposite ends, suggesting potential for designing new materials for elastic wave control.
Article Abstract
We present a gradient-index crystal that offers extreme tunability in terms of manipulating the propagation of elastic waves. For small-amplitude excitations, we achieve control over wave transmission depth into the crystal. We numerically and experimentally demonstrate a boomeranglike motion of a wave packet injected into the crystal. For large-amplitude excitations on the same crystal, we invoke nonlinear effects. We numerically and experimentally demonstrate asymmetric wave transmission from two opposite ends of the crystal. Such tunable systems can thus inspire a novel class of designed materials to control linear and nonlinear elastic wave propagation in multiscales.
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| http://dx.doi.org/10.1103/PhysRevLett.123.214301 | DOI Listing |
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