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Acoustic band gaps in phononic crystal strip waveguides
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View: Figures


Image of FIG. 1.
FIG. 1.

Schematics of PC strip waveguides with (a) unit-cell and (b) unit-cell .

Image of FIG. 2.
FIG. 2.

The band structures of (a) the PC strip waveguide with unit-cell (b) the PC strip with unit-cell (c) the PC plate along direction with square-lattice hole (, ). The similar polarizations are clustered into the same color.

Image of FIG. 3.
FIG. 3.

The displacement vector fields of the PC strip eigenmodes labeled in Fig. 2(b). (a) wave number , frequency . (quasi-, point A at Fig. 2). (b) , (quasi-, point B of Fig. 2). (c) , (quasi-, point C at Fig. 2). (d) , (quasi-, point D at Fig. 2). (e) , (quasi-, point E at Fig. 2). (f) , (quasi-, point F at Fig. 2). The direction and size of cones represent the direction and the magnitude of the displacement vector.

Image of FIG. 4.
FIG. 4.

Variation of the total band gap (shaded area) as a function of for the PC strip waveguide composed of unit cell with .

Image of FIG. 5.
FIG. 5.

The energy flux transmission spectra of waves propagating through the six-period strip waveguide composing of unit cell with and .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Acoustic band gaps in phononic crystal strip waveguides