论文信息 - Self collimation of ultrasound in a three-dimensional sonic crystal

Self collimation of ultrasound in a three-dimensional sonic crystal

We present the experimental demonstration of self-collimation (subdiffractive propagation) of an ultrasonic beam inside a three-dimensional (3D) sonic crystal. The crystal is formed by two crossed steel cylinders structures in a woodpilelike geometry disposed in water. Measurements of the 3D field distribution show that a narrow beam, which diffractively spreads in the absence of the sonic crystal, is strongly collimated in propagation inside the crystal, demonstrating the 3D self-collimation effect.

[1] Kestutis Staliunas,et al. Subdiffractive band-edge solitons in Bose-Einstein condensates in periodic potentials. , 2006, Physical review. E, Statistical, nonlinear, and soft matter physics.

[2] Experimental demonstration of directional acoustic radiation based on two-dimensional phononic crystal band edge states , 2007 .

[3] Peter T. Rakich,et al. Achieving centimetre-scale supercollimation in a large-area two-dimensional photonic crystal , 2006, Nature materials.

[4] Kestutis Staliunas,et al. Subdiffractive propagation of ultrasound in sonic crystals , 2007 .

[5] Z. Hou,et al. The band gaps of cubic phononic crystals with different shapes of scatterers , 2006 .

[6] Masaya Notomi,et al. Self-collimating phenomena in photonic crystals , 1999 .

[7] Kestutis Staliunas,et al. Theoretical prediction of the nondiffractive propagation of sonic waves through periodic acoustic media , 2007 .

[8] Dennis W Prather,et al. Experimental demonstration of self-collimation inside a three-dimensional photonic crystal. , 2006, Physical review letters.

[9] Kestutis Staliunas,et al. Quantitative analysis of subdiffractive light propagation in photonic crystals , 2007 .

[10] Jeremy Witzens,et al. Self-collimation in planar photonic crystals , 2002 .

[11] P. Sheng,et al. Focusing of sound in a 3D phononic crystal. , 2004, Physical review letters.