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Experimental realization of sonic demultiplexing devices based on inverse designed scattering acoustic elements
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10.1063/1.2196867
/content/aip/journal/apl/88/16/10.1063/1.2196867
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/16/10.1063/1.2196867
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) An artistic and (b) a schematic view of the scattering acoustical element (SAE) setup. The incident wave (S) is shown at the right of the SAE, which consists of an array of cylinders enclosed in the region defined by the dashed lines. The letters in (b) define the parameters used in the inverse design process.

Image of FIG. 2.
FIG. 2.

(Color online) Calculated pressure maps for the scattering of a sound plane wave (with wavelength ) by a scattering acoustical element that acts as a two wavelength demultiplexing device (black dots). (a) Map associated with the wave . (b) Map associated with . The arrows are guides for the eye and define the flow of transmitted wavelength. The vertical dashed lines define the plane in Fig. 1.

Image of FIG. 3.
FIG. 3.

(Color online) These maps depict the function for the optimized seven layer SAE (black dots). (Left panel) Map obtained by multiple scattering simulations. (Right panel) Map experimentally obtained by measurements performed inside the area enclosed by the dashed lines in the left panel. The black lines define levels of equal pressure; the difference between two adjacent levels is .

Image of FIG. 4.
FIG. 4.

(Color online) Three wavelength demultiplex SAE. The figure illustrates three maps of the transmitted pressure (the sound impinges the SAE from the bottom). Each map corresponding to one wavelength: (a) , (b) , and (c) . The color scale used goes from red (high amplitude) via green to blue (low amplitude). The black dots show a schematic view of the nine layer SAE device.

Image of FIG. 5.
FIG. 5.

(Color online) Experimental characterization of a three wavelength demultiplex SAE. The symbols mark the measured pressure amplitudes and the solid lines define those obtained by multiple scattering simulations, for a cross section at . The three colors (symbols), blue (squares), black (circles), and red (triangles), correspond to the three spatially separated wavelengths, 22.7, 21.3, and , respectively.

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/content/aip/journal/apl/88/16/10.1063/1.2196867
2006-04-18
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Experimental realization of sonic demultiplexing devices based on inverse designed scattering acoustic elements
http://aip.metastore.ingenta.com/content/aip/journal/apl/88/16/10.1063/1.2196867
10.1063/1.2196867
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