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Focusing of longitudinal ultrasonic waves in air with an aperiodic flat lens
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10.1121/1.3640841
/content/asa/journal/jasa/130/5/10.1121/1.3640841
http://aip.metastore.ingenta.com/content/asa/journal/jasa/130/5/10.1121/1.3640841
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) COMSOL simulation of the acoustic lens with a 100 kHz incident wave. X and Y axes are position in meters. Color scale is pressure in arbitrary units.

Image of FIG. 2.
FIG. 2.

Photograph of the fabricated acoustic lens. Scale is in millimeters.

Image of FIG. 3.
FIG. 3.

Flow chart of hybrid algorithm and simulation process to design an acoustic lens.

Image of FIG. 4.
FIG. 4.

Block diagram of the excitation of the acoustic lens and measurement of the displacements of the fiber-disk with scanning laser vibrometer.

Image of FIG. 5.
FIG. 5.

Schematic of fiber, disk and ring arrangement used in measurement of the focal spot of the acoustic lens. Not to scale.

Image of FIG. 6.
FIG. 6.

Photograph of the test up illustrating the position of the scanning laser vibrometer (bottom of photo), fiber-disk, lens and transducer (top).

Image of FIG. 7.
FIG. 7.

Photograph of transducer (left), lens, and fiber-disk (right)

Image of FIG. 8.
FIG. 8.

Plot of pressure vs X-position at the focus of the acoustic lens. Y-axis scale is in Pascals, and X-axis scale is in millimeters. Error bars represent standard deviation at each location from seven trials.

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/content/asa/journal/jasa/130/5/10.1121/1.3640841
2011-11-16
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Focusing of longitudinal ultrasonic waves in air with an aperiodic flat lens
http://aip.metastore.ingenta.com/content/asa/journal/jasa/130/5/10.1121/1.3640841
10.1121/1.3640841
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