2010/03/25 by R. Pico, V. J. Sanchez-Morcillo, Pico, R. +5
Physics and Astronomy · #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Materials Science (cond-mat.mtrl-sci) #cond-mat.mtrl-sci #physics.flu-dyn
paper · pdf · doi:10.48550/arxiv.1003.4844
arxiv created 2010/03/25 · arxiv updated 2010/03/26
We propose and numerically demonstrate an efficient cleaning of spatial structure (spatial filtering) of sound beams by propagating them through at least twodimensional sonic crystals, i.e. through acoustic structures periodically modulated in longitudinal and in transversal direction with respect to the sound propagation direction. We show the spatial filtering in two configurations: with- and without the angular band-gap. We also show that besides the spatial filtering the beams can be additionally focalized at a particular distance behind the sonic crystal in both configurations.