Experimental Realization of a Nonlinear Acoustic Lens with a Tunable Focus
Pattern Formation and Solitons
2015-06-16 v1 Classical Physics
Abstract
We realize a nonlinear acoustic lens composed of a two-dimensional array of sphere chains interfaced with water. The chains are able to support solitary waves which, when interfaced with a linear medium, transmit compact pulses with minimal oscillations. When focused, the lens is able to produce compact pressure pulses of high amplitude, the "sound bullets". We demonstrate that the focal point can be controlled via pre-compression of the individual chains, as this changes the wave speed within them. The experimental results agree well both spatially and temporally with analytical predictions over a range of focus locations.
Keywords
Cite
@article{arxiv.1308.1483,
title = {Experimental Realization of a Nonlinear Acoustic Lens with a Tunable Focus},
author = {Carly M. Donahue and Paul W. J. Anzel and Luca Bonanomi and Thomas A. Keller and Chiara Daraio},
journal= {arXiv preprint arXiv:1308.1483},
year = {2015}
}
Comments
7 pages, 4 figures