@article{3059200, title = "Elastodynamic response of three-dimensional phononic crystals using laser Doppler vibrometry", author = "Tragazikis, I.K. and Exarchos, D.A. and Dalla, P.T. and Dassios, K. and Matikas, T.E. and Psarobas, I.E.", journal = "Journal of Physics D: Applied Physics", year = "2019", volume = "52", number = "28", publisher = "INSTITUTE OF PHYSICS PUBLISHING", issn = "0022-3727, 1361-6463", doi = "10.1088/1361-6463/ab1991", keywords = "Acoustic wave propagation; Classifiers; Doppler effect; Elastic waves; Metamaterials; Multiple scattering; Phonons; Vibration measurement, Acoustic metamaterials; Elastodynamic response; Laser Doppler Vibrometry; Layer-multiple-scattering; Phononic Crystal; Spectral gap, Laser Doppler velocimeters", abstract = "The elastodynamic response of finite 3D phononic structures is analyzed by means of comparing experimental findings obtained through a laser Doppler vibrometry-based methodology and theoretical computations performed with the layer-multiple-scattering method. The recorded frequency-gap spectrum of the phononic slabs exhibited a good agreement of theory to experiment. Along these lines, a newly developed technique, based on laser Doppler vibrometry, has been proposed and validated for the dispersion efficiency in 3D phononic metamaterials. © 2019 IOP Publishing Ltd." }