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Band gap creation using quasiordered structures based on sonic crystals
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10.1063/1.2198012
/content/aip/journal/apl/88/17/10.1063/1.2198012
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/17/10.1063/1.2198012

Figures

Image of FIG. 1.
FIG. 1.

Starting SCs consisting of hollow cylindrical aluminum rods long mounted in a triangular pattern with lattice constant . The diameter of the cylinders is . The sample under study consists of an array of six rows with ten cylinders each, and a rectangular external shape.

Image of FIG. 2.
FIG. 2.

Two QOSs optimized using Fitness . Here the acoustic attenuation has been maximized to at point (1,0). The plots show the experimental insertion loss for the starting SC (continuous line) and the insertion loss obtained in the optimized QOS, experimental (dotted line) and calculated by MST (short dotted line).

Image of FIG. 3.
FIG. 3.

QOSs obtained by AG for Fitness in (a) , centroid at ; (b) , centroid at ; (c) , centroid at ; and (d) , centroid at .

Image of FIG. 4.
FIG. 4.

Attenuation spectra corresponding to Fig. 3(d): experimental insertion loss for the starting SC (dotted line) and the insertion loss obtained for the optimized QOS, experimental (continuous line) and calculated by MST (short-dotted line).

Tables

Generic image for table
Table I.

AA (attenuation area) and average attenuation for optimized QOSs shown in Figs. 3(a)–3(d).

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/content/aip/journal/apl/88/17/10.1063/1.2198012
2006-04-25
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Band gap creation using quasiordered structures based on sonic crystals
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/17/10.1063/1.2198012
10.1063/1.2198012
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