Customized broadband achromatic acoustic metasurfaces with high three-dimensional focusing gain

Key Points

• High three-dimensional focusing gain was achieved through the design of customized acoustic metasurfaces.
• The specific customization resulted in enhanced sound wave focusing across a broad frequency range, optimizing performance.
• Analysis of various design parameters highlighted their critical roles in achieving desired acoustic effects with enhanced gain.
• Future applications may enable improved sound control in various environments, emphasizing the need for real-world validation.