Computational modeling demonstrates a full phononic band gap in periodic elastic composites, suggesting pathways for vibration suppression and phonon localization.
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.
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Kushwaha et al. (1993) studied this question.
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