Sonic gradient index lens for aqueous applications

被引：136

作者：

Martin, Theodore P. ^{[1
]}

Nicholas, Michael ^{[1
]}

Orris, Gregory J. ^{[1
]}

Cai, Liang-Wu ^{[2
]}

Torrent, Daniel ^{[3
]}

Sanchez-Dehesa, Jose ^{[3
]}

机构：

[1] USN, Res Lab, Acoust Div, Washington, DC 20375 USA

[2] Kansas State Univ, Dept Mech & Nucl Engn, Manhattan, KS 66506 USA

[3] Univ Politecn Valencia, Wave Phenomena Grp, Dept Elect Engn, E-46022 Valencia, Spain

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 11期

关键词：

D O I：

10.1063/1.3489373

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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. (C) 2010 American Institute of Physics. [doi:10.1063/1.3489373]

引用

页数：3

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