Hamham, El Mokhtar; Jimenez, Noe; Picó Vila, Rubén; Sánchez Morcillo, Víctor José; García-Raffi, L. M.; Staliünas, Kestutis(American Physical Society, 2015-08-06)
We report the propagation of high-intensity sound beams in a sonic crystal, under self-collimation or reduced-divergence conditions. The medium is a fluid with elastic quadratic nonlinearity, where the dominating nonlinear ...
Jimenez, Noe; Sánchez Morcillo, Víctor José; Mehrem Issa Mohamed Mehrem, Ahmed; Hamham, El Mokhta; Picó Vila, Rubén; García-Raffi, L. M.(Elsevier, 2015)
[EN] The propagation of intense acoustic waves in a periodic medium (sonic crystal) is numerically studied. The medium consists in a structured fluid, formed by a periodic array of fluid layers with alternating linear ...
Simultaneous self-collimation of sound beams with different frequencies, corresponding to fundamental wave and to its second harmonic, is proposed theoretically and demonstrated experimentally. The result is obtained when ...