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arXiv · 1006.3582

Sonic Gradient Index Lens for Aqueous Applications

Theodore P. Martin·Michael Nicholas·Gregory J. Orris·Liang-Wu Cai·Daniel Torrent·Jose Sanchez-Dehesa
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Abstract

We study the acoustic scattering properties of a phononic crystal designed to behave as a gradient index lens in water, both experimentally and theoretically. The gradient index lens is designed using a square lattice of stainless-steel cylinders based on a multiple scattering approach in the homogenization limit. We experimentally demonstrate that the lens follows the graded index equations derived for optics by mapping the pressure intensity generated from a spherical source at 20 kHz. We find good agreement between the experimental result and theoretical modeling based on multiple scattering theory.

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Theodore P. Martin, Michael Nicholas, Gregory J. Orris, Liang-Wu Cai, Daniel Torrent, Jose Sanchez-Dehesa. 2010-09-14. Sonic Gradient Index Lens for Aqueous Applications. https://doi.org/10.1063/1.3489373

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