Acoustic supersurface capable of simultaneously adjusting and controlling amplitude and phase

Abstract

The invention provides an acoustic supersurface capable of simultaneously adjusting and controlling amplitude and phase. The acoustic supersurface comprises a plurality of structural units; a plurality of structural units is arranged in parallel in a same plane, and when arranged, a plurality of structural units is connected to each other as an integral body; the structural unit comprises: a solidpart and a hollow part; the solid part is internally provided with a folding channel, and the hollow part is hollow along an axial direction; the folding channel is composed of a starting section, anintermediate section and a tail section; the starting section is an inlet connecting channel, and the intermediate section is a square wave channel composed of a plurality of rectangular frames for connecting the intermediate section and the outside; and the inlet connecting passage and an outlet connecting passage are respectively located at the center positions of a rear end surface and a frontend surface of the solid part. The acoustic supersurface has the beneficial effects that the acoustic supersurface proposed by the invention can simultaneously control the amplitude and phase of theemitted acoustic wave in a full range, and can be used for acoustic holography and acoustic phantom, the variation parameters are small, the variation law is obvious, and the acoustic supersurface hasthe high industrial application value.

Description

technical field [0001] The invention relates to the technical field of acoustic materials, in particular to an acoustic metasurface capable of simultaneously adjusting amplitude and phase. Background technique [0002] At present, the phase and amplitude control of sound waves is very popular, and it has broad prospects in acoustic holography and acoustic phantom. In the past ten years, acoustic metasurfaces have made some progress in the control of acoustic wave transmission and reflection, and have achieved a full range of reflection and transmission phase control. However, there are still few related works on simultaneously controlling the amplitude and phase of the sound wave, and it is still difficult to realize the full-range control of the amplitude and phase. Because acoustic holography and acoustic phantoms need to simultaneously control the phase and amplitude of acoustic waves, it is difficult for an acoustic metasurface that does not have the ability to simultan...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that there are still few related works in the simultaneous regulation of the amplitude and phase of the acoustic wave, and it is still difficult to realize the full-range regulation of the amplitude and phase, the present invention provides an acoustic metasurface that can simultaneously regulate the amplitude and phase, including Multiple structural units, multiple structural units are arranged in parallel on the same plane, and when arranged, multiple structural units are connected to each other to form a whole;

Images