META 2021, META'12

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Acoustic Metamaterials through Coiling up Space
Jensen Li, Zixian Liang

Last modified: 2011-12-30


We show that by curving fluid perforations within a solid with proper control of phase delay, a two dimensional acoustic metamaterial with extreme indices can be constructed. It can be used to achieve a variety of wave manipulations including negative refraction in the effective medium regime and tunneling with a density-near-zero material.


metamaterials, phononic crystals, negative refractive index