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

Acoustic Absorber In article number 2201757, Gih-Keong Lau and co-workers report that a single type of absorber does not completely mitigate the variable noise whose frequency shifts with vehicle speed load. A transformable switches from Helmholtz resonance at medium to membrane low is developed. Electro-adhesive zip double micro-slit layers helps reduce effective hole ratio. This transparent construction provides clear view good for replacing traditional enclosure barrier.