APS » PROLA » Phys. Rev. Lett. » Volume 71 » Issue 13

Phys. Rev. Lett. 71, 2022 - 2025 (1993)

Acoustic band structure of periodic elastic composites
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M. S. Kushwaha, P. Halevi, L. Dobrzynski, and B. Djafari-Rouhani
Instituto de Física de la Universidad Autónoma de Puebla, Apartado Postal J-48, Puebla, Puebla 72570 Mexico
Centro de Investigación en Física de la Universidad de Sonora, Apartado Postal 5-088, Hermosillo, Sonora 83190, Mexico
Laboratoire de Dynamique et Structure des Materiaux Moleculaires, Centre National de la Recherche Scientifique, Université de Lille I, Unité Fondamentale de Recherche de Physique, Bâtiment P5, 59655 Villeneuve D’Ascq CEDEX, France

Received 11 February 1993

We present the first full band-structure calculations for periodic, elastic composites. For transverse polarization of the vibrations we obtain a ‘‘phononic’’ band gap which extends throughout the Brillouin zone. A complete acoustic gap or a low density of states should have important consequences for the suppression of zero-point motion and for the localization of phonons, and may lead to improvements in transducers and in the creation of a vibrationless environment.


©1993 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v71/p2022
DOI: 10.1103/PhysRevLett.71.2022
PACS: 43.40.+s, 41.20.Jb, 42.25.Fx, 63.20.-e

See Also

Comment: M. M. Sigalas and E. N. Economou, Comment on “Acoustic Band Structure of Periodic Elastic Composites”, Phys. Rev. Lett. 75, 3580 (1995)

Reply: M. S. Kushwaha, P. Halevi, L. Dobrzynski, and B. Djafari-Rouhani, Kushwaha et al. Reply, Phys. Rev. Lett. 75, 3581 (1995)

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