Transformation from Helmholtz to Membrane Resonance by Electro‐Adhesive Zip of a Double‐Layer Micro‐Slit Acoustic Absorber (Adv. Mater. Technol. 10/2023).

Acoustic absorbers, acoustic metamaterials, electro-adhesion, electrostatics, Helmholtz resonators, Helmholtz resonators, membrane resonators, self clearing, sound absorbers Transformation from Helmholtz to Membrane Resonance by Electro-Adhesive Zip of a Double-Layer Micro-Slit Acoustic Absorber (Adv. A transformable absorber that switches from the Helmholtz resonance at a medium frequency to the membrane resonance at a low frequency is developed. [Extracted from the article]