|Title||Measurement of a Broadband Negative Index with Space-Coiling Acoustic Metamaterials|
|Publication Type||Journal Article|
|Year of Publication||2013|
|Authors||Y. Xie, B-I. Popa, L. Zigoneanu, S.A. Cummer|
|Journal||Physical Review Letters|
We report the experimental demonstration of a broadband negative refractive index obtained in a labyrinthine acoustic metamaterial structure. Two different approaches were employed to prove the metamaterial negative index nature: one-dimensional extractions of effective parameters from reflection and transmission measurements and two-dimensional prism-based measurements that convincingly show the transmission angle corresponding to negative refraction.
|Short Title||Phys. Rev. Lett.|