Reconfigurable acoustical holography modulation method and device based on crystalline polymer
By using laser scanning technology on acoustic holographic plate of crystalline polymer materials, the microstructure region is switched between crystalline and non-crystalline states, the problem of difficulty in achieving high resolution and high compactness in the prior art is solved, and efficient and flexible sound field modulation is achieved.
CN119964531AInactive Publication Date: 2025-05-09ZHEJIANG UNIV
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Patent Information
- Application Number
- CN202510438369.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2025-05-09
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Technical Problem
Existing sound field modulation technologies are difficult to achieve high resolution and high compactness at the same time, especially in dynamic acoustic holographic technology.
Method used
Using a programmable acoustic holographic plate based on crystalline polymer materials, the microstructure regions of the crystalline polymer material are switched between the crystalline and amorphous states by laser scanning localized irradiation, thereby achieving high-resolution acoustic field modulation.
Benefits of technology
High resolution dynamic modulation of the sound field is achieved, improving the flexibility and application potential of the sound field modulation, while maintaining high transmittance and high energy utilization.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a reconfigurable acoustical holography modulation method and device based on a crystalline polymer. The programmable acoustical holography device is composed of a single-layer photoresponse crystalline polymerization flat plate, is switched between two phases when the temperature irradiated by laser changes, has a crystalline state and a non-crystalline state, and reversibly changes along with the temperature. Space sound field modulation can be realized by spatially arranging the coding units, the crystalline polymer flat plate subjected to laser patterning phase change is recovered to the previous crystalline state after being cooled, the patterned coding acoustical holography disappears, and new phase acoustical holography is written in, so that a new sound field modulation function is realized. According to the programmable phase acoustical holography device based on the crystalline polymer, the incident plane wave of the probe can be modulated into any three-dimensional complex sound field, and the programmable phase acoustical holography device is of a complete plane type, is matched with underwater acoustic impedance, and is high in acoustic energy coupling efficiency, compact in structure, easy to prepare and low in price.
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