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Broadband directional acoustic waveguide with high efficiency
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10.1063/1.4739081
/content/aip/journal/apl/101/4/10.1063/1.4739081
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/4/10.1063/1.4739081
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic illustration of the 2D model of the directional waveguide. The propagation of acoustic wave incident from positive (negative) directions denoted by blue dashed (red solid) arrow.

Image of FIG. 2.
FIG. 2.

Calculated dispersion bands of 2D PC model with filling radio and square lattice constant . A sketch of first Brillouin zone of a square mesh is illustrated in the lower right corner, with triangular irreducible zone (red) with high-symmetry points , , and . The partial band of the first band is illustrated between and .

Image of FIG. 3.
FIG. 3.

Calculated total transmissions of acoustic waves that incident from positive (red solid line) and negative (black dashed line) directions, respectively, for driving normalized frequency ranging from 0.3 to 0.65.

Image of FIG. 4.
FIG. 4.

Simulated field distribution mappings with the incident wave frequency of 0.45 (normalized). Acoustic wave propagate from the (a) positive direction (left side) and (b) negative direction (right side).

Image of FIG. 5.
FIG. 5.

Measured total transmissions of acoustic waves that incident from positive (red solid line) and negative (black dashed line) directions, respectively, with the frequency ranging from 10 KHz to 20 KHz (corresponding normalized frequency range 0.32 to 0.64).

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/content/aip/journal/apl/101/4/10.1063/1.4739081
2012-07-25
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Broadband directional acoustic waveguide with high efficiency
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/4/10.1063/1.4739081
10.1063/1.4739081
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