Temperature biosensor based on triangular lattice phononic crystals

Magnetic-Sphere-Based Phononic Crystals

Periodic arrays in one, two, and three dimensions, made of magnetic spheres embedded in a fluid matrix, are considered in this study and utilized as phononic structures. The propagation of acoustic waves through these structures is analyzed experimentally, in lowand high-frequency region, via laser vibrometry, as well as standard underwater acoustic measurements. A first comparison to theoretic...

Tunable phononic crystals based on cylindrical Hertzian contact

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Tunable magnetoelastic phononic crystals

J.-F. Robillard, O. Bou Matar, J. O. Vasseur, P. A. Deymier, M. Stippinger, A.-C. Hladky-Hennion, Y. Pennec, and B. Djafari-Rouhani Joint European Laboratory LEMAC, Ecole Centrale de Lille, 59651 Villeneuve d’Ascq, France Institut d’Électronique, de Microélectronique et de Nanotechnologie, UMR CNRS 8520, Cité Scientifique, 59652 Villeneuve d’Ascq Cedex, France Department of Materials Science an...

Design and characterization of bubble phononic crystals

Formation of Bragg Band Gaps in Anisotropic Phononic Crystals Analyzed With the Empty Lattice Model

Bragg band gaps of phononic crystals generally, but not always, open at Brillouin zone boundaries. The commonly accepted explanation stems from the empty lattice model: assuming a small material contrast between the constituents of the unit cell, avoided crossings in the phononic band structure appear at frequencies and wavenumbers corresponding to band intersections; for scalar waves the lowes...