TY - JOUR
T1 - Multifunctional solid/solid phononic crystal
AU - Swinteck, N.
AU - Vasseur, J. O.
AU - Hladky-Hennion, A. C.
AU - Croënne, C.
AU - Bringuier, S.
AU - Deymier, P. A.
PY - 2012/7/15
Y1 - 2012/7/15
N2 - A two-dimensional, solid/solid phononic crystal (PC) comprised a square array of steel cylinders in epoxy is shown to perform a variety of spectral, wave vector, and phase-space functions. Over a range of operating frequencies, the PC's elastic band structure shows uniquely shaped equifrequency contours that are only accessible to excitations of longitudinal polarization. Under this condition, the PC is shown to behave as (1) an acoustic wave collimator, (2) a defect-less wave guide, (3) a directional source for elastic waves, (4) an acoustic beam splitter, (5) a phase-control device, and (6) a k-space multiplexer. Wave vector diagrams and finite-difference time-domain simulations are employed to authenticate the above mentioned capabilities.
AB - A two-dimensional, solid/solid phononic crystal (PC) comprised a square array of steel cylinders in epoxy is shown to perform a variety of spectral, wave vector, and phase-space functions. Over a range of operating frequencies, the PC's elastic band structure shows uniquely shaped equifrequency contours that are only accessible to excitations of longitudinal polarization. Under this condition, the PC is shown to behave as (1) an acoustic wave collimator, (2) a defect-less wave guide, (3) a directional source for elastic waves, (4) an acoustic beam splitter, (5) a phase-control device, and (6) a k-space multiplexer. Wave vector diagrams and finite-difference time-domain simulations are employed to authenticate the above mentioned capabilities.
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U2 - 10.1063/1.4739264
DO - 10.1063/1.4739264
M3 - Article
AN - SCOPUS:84865504635
SN - 0021-8979
VL - 112
JO - Journal of Applied Physics
JF - Journal of Applied Physics
IS - 2
M1 - 024514
ER -