Ontology highlight
ABSTRACT:
SUBMITTER: Christensen J
PROVIDER: S-EPMC3985082 | biostudies-literature | 2014 Apr
REPOSITORIES: biostudies-literature
Christensen J J Romero-García V V Picó R R Cebrecos A A de Abajo F J García FJ Mortensen N A NA Willatzen M M Sánchez-Morcillo V J VJ
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]