Band gaps in phononic crystals: Generation mechanisms and interaction effects

Band gaps in phononic crystals: Generation mechanisms and interaction effects

A wide range of mesoscopic phononic materials can exhibit frequency bands where transmission is forbidden, i.e. band gaps. Three different mechanisms for their origin can be distinguished, namely Bragg, hybridization and weak elastic coupling effects. Characteristic properties of gaps of different o...

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Main Authors: C. Croënne, E. J. S. Lee, Hefei Hu, J. H. Page
Format: Article
Language:English
Published: AIP Publishing LLC 2011-12-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.3675797
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spelling doaj-bd9ed95ce3bc4ddda6780d9e5bb3763a2020-11-25T01:14:44ZengAIP Publishing LLCAIP Advances2158-32262011-12-0114041401041401-1310.1063/1.3675797088104ADVBand gaps in phononic crystals: Generation mechanisms and interaction effectsC. Croënne0E. J. S. Lee1Hefei Hu2J. H. Page3Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, CanadaDepartment of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, CanadaDepartment of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, CanadaDepartment of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, CanadaA wide range of mesoscopic phononic materials can exhibit frequency bands where transmission is forbidden, i.e. band gaps. Three different mechanisms for their origin can be distinguished, namely Bragg, hybridization and weak elastic coupling effects. Characteristic properties of gaps of different origins are investigated and compared, for a 3D crystal of tungsten carbide beads in water, a 2D crystal of nylon rods in water, and a 3D opal-like structure of weakly sintered aluminum beads. For the second type of crystal, it is shown that Bragg and hybridization gaps can be overlapped, allowing the study of the interaction between these two mechanisms. Atypical dispersion characteristics are demonstrated near the resonance frequency.http://dx.doi.org/10.1063/1.3675797
collection DOAJ
language English
format Article
sources DOAJ
author C. Croënne
E. J. S. Lee
Hefei Hu
J. H. Page
spellingShingle C. Croënne
E. J. S. Lee
Hefei Hu
J. H. Page
Band gaps in phononic crystals: Generation mechanisms and interaction effects
AIP Advances
author_facet C. Croënne
E. J. S. Lee
Hefei Hu
J. H. Page
author_sort C. Croënne
title Band gaps in phononic crystals: Generation mechanisms and interaction effects
title_short Band gaps in phononic crystals: Generation mechanisms and interaction effects
title_full Band gaps in phononic crystals: Generation mechanisms and interaction effects
title_fullStr Band gaps in phononic crystals: Generation mechanisms and interaction effects
title_full_unstemmed Band gaps in phononic crystals: Generation mechanisms and interaction effects
title_sort band gaps in phononic crystals: generation mechanisms and interaction effects
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2011-12-01
description A wide range of mesoscopic phononic materials can exhibit frequency bands where transmission is forbidden, i.e. band gaps. Three different mechanisms for their origin can be distinguished, namely Bragg, hybridization and weak elastic coupling effects. Characteristic properties of gaps of different origins are investigated and compared, for a 3D crystal of tungsten carbide beads in water, a 2D crystal of nylon rods in water, and a 3D opal-like structure of weakly sintered aluminum beads. For the second type of crystal, it is shown that Bragg and hybridization gaps can be overlapped, allowing the study of the interaction between these two mechanisms. Atypical dispersion characteristics are demonstrated near the resonance frequency.
url http://dx.doi.org/10.1063/1.3675797
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AT hefeihu bandgapsinphononiccrystalsgenerationmechanismsandinteractioneffects
AT jhpage bandgapsinphononiccrystalsgenerationmechanismsandinteractioneffects
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