Christensen, Johan; Romero García, Vicente; Picó Vila, Rubén; Cebrecos Ruiz, Alejandro; Garcia de Abajo, Francisco Javier; Mortensen, N. A.; Willatzen, M.; Sánchez Morcillo, Víctor José(Nature Publishing Group: Open Access Journals - Option C, 2014-04-14)
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 ...