TY - JOUR
T1 - Positive, negative, zero refraction, and beam splitting in a solid/air phononic crystal
T2 - Theoretical and experimental study
AU - Bucay, J.
AU - Roussel, E.
AU - Vasseur, J. O.
AU - Deymier, P. A.
AU - Hladky-Hennion, A. C.
AU - Pennec, Y.
AU - Muralidharan, K.
AU - Djafari-Rouhani, B.
AU - Dubus, B.
PY - 2009/6/25
Y1 - 2009/6/25
N2 - We report on a phononic crystal (PC) consisting of a square array of cylindrical polyvinylchloride inclusions in air that exhibits positive, negative, or zero refraction depending on the angle of the incident sound beam. For all three cases of refraction, the transmitted beam undergoes splitting upon exiting the crystal. These properties are analyzed theoretically using finite difference time domain method and are demonstrated experimentally. Band structures and equifrequency surfaces (EFSs) calculated with the plane-wave expansion method show that the observed properties result from the unique geometry of the PC's EFS as compared to that of the incident media.
AB - We report on a phononic crystal (PC) consisting of a square array of cylindrical polyvinylchloride inclusions in air that exhibits positive, negative, or zero refraction depending on the angle of the incident sound beam. For all three cases of refraction, the transmitted beam undergoes splitting upon exiting the crystal. These properties are analyzed theoretically using finite difference time domain method and are demonstrated experimentally. Band structures and equifrequency surfaces (EFSs) calculated with the plane-wave expansion method show that the observed properties result from the unique geometry of the PC's EFS as compared to that of the incident media.
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U2 - 10.1103/PhysRevB.79.214305
DO - 10.1103/PhysRevB.79.214305
M3 - Article
AN - SCOPUS:68949123111
SN - 1098-0121
VL - 79
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 21
M1 - 214305
ER -