Acoustic supersurface structure and sound vortex wave generator
The invention discloses an acoustic supersurface structure and a sound vortex wave generator. The acoustic supersurface structure comprises a cylinder-shaped supercell, the cylinder-shaped supercell comprises N fan-shaped supercell units intersected to the central axis of the cylinder-shaped superce...
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| creator | WU FUGEN YAO YUANWEI XIA MING ZHANG XIN LIU YUECHANG WANG LICHENG |
| description | The invention discloses an acoustic supersurface structure and a sound vortex wave generator. The acoustic supersurface structure comprises a cylinder-shaped supercell, the cylinder-shaped supercell comprises N fan-shaped supercell units intersected to the central axis of the cylinder-shaped supercell, the plurality of fan-shaped supercell units are distributed according to the preset sequence, the refractive index of each fan-shaped supercell unit is set according to a preset rule, so that the phases corresponding to the fan-shaped supercell units are sequentially increased according to the preset sequence, and the phase difference between each two adjacent fan-shaped supercell units is mpi/N, wherein m is an odd number greater than 1, and N is not smaller than 3. During the use process,the converting from plane wave to sound vortex wave with the topology charge number being a fraction can be realized, then the demands of a user can be satisfied, in addition, the structure is simple,and the transmittance is |
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The acoustic supersurface structure comprises a cylinder-shaped supercell, the cylinder-shaped supercell comprises N fan-shaped supercell units intersected to the central axis of the cylinder-shaped supercell, the plurality of fan-shaped supercell units are distributed according to the preset sequence, the refractive index of each fan-shaped supercell unit is set according to a preset rule, so that the phases corresponding to the fan-shaped supercell units are sequentially increased according to the preset sequence, and the phase difference between each two adjacent fan-shaped supercell units is mpi/N, wherein m is an odd number greater than 1, and N is not smaller than 3. 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| subjects | ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS SOUND-PRODUCING DEVICES |
| title | Acoustic supersurface structure and sound vortex wave generator |
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