Ontology highlight
ABSTRACT:
SUBMITTER: Christensen J
PROVIDER: S-EPMC3985082 | biostudies-other | 2014
REPOSITORIES: biostudies-other
Scientific reports 20140414
We present the design of a structured material supporting complete absorption of sound with a broadband response and functional for any direction of incident radiation. The structure which is fabricated out of porous lamellas is arranged into a low-density crystal and backed by a reflecting support. Experimental measurements show that strong all-angle sound absorption with almost zero reflectance takes place for a frequency range exceeding two octaves. We demonstrate that lowering the crystal fi ...[more]