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 |
Volume | 110 |
Issue | 17 |
Date Published | 4/2013 |
Abstract | 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. |