Resumen de Propagación de haces ultrasónicos a la salida de un cristal de sonido
Isabel Pérez Arjona, Víctor José Sánchez Morcillo, Kestutis Staliunas, Ester Soliveres, Javier Redondo Pastor
Sonic crystals are media with a periodic modulation of the acoustic parameters, as the density and the bulk modulus. They have recently attracted a great interest, because of their potential applications in the control of sound propagation, used as reflectors, focusers or waveguides. All these properties are related with the dispersion introduced by the crystal anisotropy. We report on a phenomenon related with the spatial dispersion properties of the crystal: we analytically evaluate, numerically (FDTD) calculate, and experimentally measure the focusing properties of the propagated sound beam behind two-dimensional sonic crystal. Support from Spanish MEC, project FIS2008-06024-C03 and C02, from Universitat Politècnica de València through Project 20080025, and from Generalitat Valenciana by project GV/2009/036 are acknowledged.
