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. 2013 Dec 12;26(4):532–569. doi: 10.1002/adma.201303456

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© 2013 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Behavior of PnBGs (a1) Transverse plane wave of a frequency () inside the PnBG propagates through a solid and is completely reflected by a solid/solid 2D PnC made of cylinders arranged in a triangular lattice embedded in a matrix. (a2) The sound wave of a frequency () outside the PnBG is transmitted through the PnC to the other side solid. Adapted from.³⁷⁰ (b1) An illustration of a 3D PnC consisting of lead spheres () arranged on a fcc lattice embedded in epoxy matrix. (b2) A phononic band diagram of the 3D PnC shows a large complete PnBG. Adapted with permission.¹⁸² (c) A mechanically switchable phononic device. The PnBG shifts due to the dramatic change in symmetry.

Inline graphic — Behavior of PnBGs (a1) Transverse plane wave of a frequency () inside the PnBG propagates through a solid and is completely reflected by a solid/solid 2D PnC made of cylinders arranged in a triangular lattice embedded in a matrix. (a2) The sound wave of a frequency () outside the PnBG is transmitted through the PnC to the other side solid. Adapted from.³⁷⁰ (b1) An illustration of a 3D PnC consisting of lead spheres () arranged on a fcc lattice embedded in epoxy matrix. (b2) A phononic band diagram of the 3D PnC shows a large complete PnBG. Adapted with permission.¹⁸² (c) A mechanically switchable phononic device. The PnBG shifts due to the dramatic change in symmetry.