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Acoustic confinement and waveguiding with a line-defect structure in phononic crystal slabs
Acoustic confinement and waveguiding with a line-defect structure in phononic crystal slabs
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Khelif, Abdelkrim
Mohammadi, Saeed
Eftekhar, Ali Asghar
Adibi, Ali
Aoubiza, Boujamaa
Mohammadi, Saeed
Eftekhar, Ali Asghar
Adibi, Ali
Aoubiza, Boujamaa
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Abstract
We present a new way of forming phononic crystal waveguides by coupling a series of line-defect resonators. The dispersion proprieties of these coupled resonator acoustic waveguides CRAW can be engineered by using their geometrical parameters.We show that single-mode guiding over a large bandwidth is possible in CRAW formed in a honeycomb-lattice phononic crystal slab of holes in zinc oxide. In addition, a finite length of CRAW structure acts as an efficient selective acoustic filter for Lamb waves.
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2010-10
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