Self collimation of ultrasound in a 3D sonic crystal
Materials Science
2015-05-13 v2 Fluid Dynamics
Abstract
We present the experimental demonstration of self-collimation (subdiffractive propagation) of an ultrasonic beam inside a three-dimensional sonic crystal. The crystal is formed by two crossed steel cylinders structures in a woodpile-like 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.
Keywords
Cite
@article{arxiv.0902.1707,
title = {Self collimation of ultrasound in a 3D sonic crystal},
author = {E. Soliveres and V. Espinosa and I. Perez-Arjona and V. Sanchez-Morcillo and K. Staliunas},
journal= {arXiv preprint arXiv:0902.1707},
year = {2015}
}
Comments
3 figures, submitted to Applied Physics Letters