Investigation on tunable low-frequency property of magnetic field induced phononic crystal with Archimedean spiral-beams

Gao, Weirui; Yang, Bin; Ying, Hong; Guo, Kai; Sun, Peng; Sun, Jun

doi:10.1016/j.ymssp.2022.109756

Cited by 6 publications

(1 citation statement)

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“…On the one side, tunable PCs are realized by physically adjusting the material parameters. Such systems generally consist of multiphysics coupled media, which are sensitive to the electric field (Li et al, 2018;Ning et al, 2021;Zhang and Gao, 2021), magnetic field (Yang et al, 2014;Chunlong and Jin, 2016;Gao et al, 2023), optical field (Baumgartl et al, 2007), and thermal field (Chuang et al, 2019;Liu et al, 2019;Yang et al, 2022). On the other hand, tunable PCs are realized by mechanically changing the geometrical topology.…”

Section: Introductionmentioning

confidence: 99%

Dual-tunable phononic waveguides for manipulation of guided Lamb waves

Guo,

Ma,

Wang

et al. 2023

Program. mater.

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In this paper, we design and fabricate dual-tunable waveguides in a two-dimensional periodic plate with threaded holes. Dual tunability is realized by using rods held with nuts as well as assembly prestress of the nuts. A straight waveguide, a bent waveguide, and a wave splitter are designed by changing the distribution of rods and nuts in different circuits. The experimental and numerical results show that the frequencies of guided waves can be tuned by the assembly prestress. By increasing the amount of prestress, the frequency range of the passing band can be shifted upward. Confinements, guiding, and splitting of Lamb waves are clearly observed in both experimental measurements and numerical simulations. This work is essential for the practical design of reconfigurable phononic devices.

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