Three-dimensional tunable acoustic vortex reflection superlattice grating and acoustic vortex control device

By etching periodic supercells on the acoustic metasurface and adjusting the depth of the air grooves, dynamic control of the acoustic vortex reflection mode was achieved, solving the problems of single function and low efficiency in the existing technology, and improving the flexibility and performance of acoustic communication and detection systems.

CN121725761BActive Publication Date: 2026-06-02SUZHOU UNIV
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Patent Information

Application Number
CN202610222719.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-02-25
Publication Date
2026-06-02
Estimated Expiration
2046-02-25

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Abstract

The application relates to a three-dimensional tunable acoustic vortex reflection superstructure grating and an acoustic vortex control device. The device comprises a depth adjustment mechanism and two periodic supercells formed by etching a rigid cylindrical base; each periodic supercell comprises m fan units, the inside of one fan unit is etched into a fan ring-shaped pipeline as a depth adjustment fan unit, and the inside of the other m-1 fan units is etched into a fan ring-shaped air groove with a surface opening as a depth fixing fan unit; the depth fixing fan units in each periodic supercell form a gradient groove depth; the depth adjustment mechanism is inserted into the depth adjustment fan unit, so that the inside of the depth adjustment fan unit forms a fan ring-shaped air groove with a surface opening, the depth of the air groove of the depth adjustment fan unit is adjusted by pushing and pulling the depth adjustment mechanism, and the problems of fixed and complex acoustic superstructure surface structure and low efficiency are effectively solved.
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Citation Information

Patent Citations

  • Acoustic vortex separator based on angular meta-structure surface

    CN111681634A

  • Method for realizing acoustic vortex tunneling transmission on metasurface based on topology

    CN120977277A