Walker, Ezekiel; Reyes Contreras, Delfino; Mayorga Rojas, Miguel; Krokhin, Arkadii; Neogi, Arup
(SPIE, 2014-09)
Metamaterial acoustic lenses are acoustic devices based on phononic crystal structures that take advantage of negative or
near-zero indices of refraction. These unique properties arise due to either the antiparallel ...