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Tunable transmission spectra of acoustic waves through double phononic crystal slabs
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10.1063/1.2896146
/content/aip/journal/apl/92/10/10.1063/1.2896146
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/10/10.1063/1.2896146
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) The normal-incidence transmission spectrum of a uniform PMMA slab with a thickness of . The quantity is the longitudinal wave velocity of water. (b) Band structure for guided Stoneley modes in the same slab. Solid lines, analytical calculations; Dotted lines, FDTD calculations; Dashed line, the water line.

Image of FIG. 2.
FIG. 2.

(a) The normal-incidence transmission spectrum of the phononic crystal slab with holes of radius and a thickness of . (b) Band structure for resonant modes in the same phononic crystal slab. Dashed line, the water line.

Image of FIG. 3.
FIG. 3.

Displacement field distributions of the two different types of resonant modes: Stoneley resonant mode in the left-hand side and waveguide resonant mode in the right-hand side. The boundary of the slab indicated by the dashed line. The white color represents high intensity and the dark color represents low intensity, as indicated by the color bar at the bottom of the figure.

Image of FIG. 4.
FIG. 4.

(a) Schematic of a distance-sensitive phononic crystal structure. The arrow represents the direction of the incident waves. The transmission coefficient is strongly affected by the spacing between the slabs. (b) The normal-incidence transmission spectrum of a single phononic crystal slab with holes of radius and a thickness of . (c) Transmission spectra for the acoustic cavities composed of slabs with (solid line)/without (dotted line) periodic array of holes. The spacing between the slabs is identical for the two cavities. (d) Transmission spectra for the phononic crystal structure. Each slab is the same as in (b), and the spacing between the slabs of (solid line), (dashed line), (short dashed line), and (dotted line), respectively.

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/content/aip/journal/apl/92/10/10.1063/1.2896146
2008-03-11
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Tunable transmission spectra of acoustic waves through double phononic crystal slabs
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/10/10.1063/1.2896146
10.1063/1.2896146
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