TITLE

ONE-DIMENSIONAL PHONONIC CRYSTAL SLABS BORDERED WITH ASYMMETRIC UNIFORM LAYERS

AUTHOR(S)
ZHANG, HONG-BO; CHEN, JIU-JIU; HAN, XU
PUB. DATE
September 2012
SOURCE
International Journal of Modern Physics B: Condensed Matter Phys;9/20/2012, Vol. 26 Issue 23, p-1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We investigate theoretically the propagation of Lamb waves in a one-dimensional phononic crystal (PC) slabs bordered with asymmetric uniform layers based on the supercell plane wave expansion (SC-PWE) method. The validity is proved by using the finite-element (FE) method with Comsol Multiphysics 3.5a. The effect of changing the thickness of substrate and superstrate on the variation of the band gap width and frequency are studied when the total thickness of the loading layers is fixed. We also investigate the property of band gap maps by changing the total thickness or the material of the loading layers. The results show that the band structure can be tuned by changing the material or the thickness of the substrate or the superstrate. These structures may be used as filters and acoustic sensors.
ACCESSION #
78421164

 

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