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Precise acoustic field establishment by holography-modulated acoustic intensity
Hao Quan1, Wei Zhou2, Xinjia Li1
1College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, Liaoning 110016, China; State Key Laboratory of Biomedical Imaging Science and System, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China.
This study introduces an AI-enhanced acoustic holography method (AIAS) for precise control of sound fields. AIAS enables the creation of complex acoustic patterns, including asymmetric multifocal fields, advancing applications like focused ultrasound therapy.
Area of Science:
- Acoustics
- Artificial Intelligence
- Wave Physics
Background:
- Acoustic holography precisely controls sound fields for applications like acoustic manipulation.
- Controlling multifocal acoustic fields with specific intensity ratios remains a challenge.
Purpose of the Study:
- To develop a novel method for precise modulation of acoustic fields using AI-enhanced holography.
- To enable the construction of multifocal acoustic fields with controllable intensity ratios.
Main Methods:
- Proposed a Physics-Informed Artificial Intelligence-based Angular Spectrum method (AIAS).
- Integrated the physical model of angular spectrum propagation into neural network training.
- Utilized a Target-Area-Weighted Mean Squared Error loss function for inverse design.
Main Results:
- AIAS reconstructed acoustic fields with improved pressure concentration and uniformity (262 ± 15 kPa to 276.4 ± 5.6 kPa).
- Successfully constructed asymmetric acoustic fields with a 2:1 intensity ratio between focal points.
- Demonstrated exceptional amplitude modulation capabilities for precise acoustic field control.
Conclusions:
- AIAS offers a significant advancement in controlling acoustic field distributions.
- The method provides stable acoustic fields suitable for particle assembly.
- AIAS holds potential for precise and personalized transcranial focused ultrasound therapy.
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