Tunable acoustic metasurface for low-frequency broadband absorption via asymmetric adjustable apertures

Key Points

• Low-frequency broadband absorption is achieved in tunable acoustic metasurfaces, with adjustable configurations.
• The maximum absorption rate observed was 95% across the tested frequency range of 200 Hz to 800 Hz.
• Analysis of the acoustic metasurface shows effective absorption traits due to its asymmetric adjustable apertures.
• These findings illustrate the potential for designing advanced sound-absorbing materials for various applications.