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Broadband aperiodic air coupled ultrasonic lens
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10.1063/1.4720149
/content/aip/journal/apl/100/21/10.1063/1.4720149
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/21/10.1063/1.4720149
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Diameter cross-section of the aperiodic lens structure above the x-axis (black-solid and white-air), Solid line: simulated pressure (normalized 0-1) vs. position (mm) across the diameter of the lens at 82.9 kHz and focal distance of 1.7 mm, Square points: experimental pressure (normalized 0.5–1.5) vs. position (mm) across the diameter of the lens at 82.9 kHz and focal distance of 2.5 mm.

Image of FIG. 2.
FIG. 2.

Pressure vs. frequency plot showing the resonances of the lens from 75–125 kHz.

Image of FIG. 3.
FIG. 3.

Plot of ultrasonic wavelength in air vs. frequency and measured 3 dB FWHM vs. frequency. FWHM represents the spatial resolution of the lens obtained using a 350 μm reflector.

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/content/aip/journal/apl/100/21/10.1063/1.4720149
2012-05-22
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Broadband aperiodic air coupled ultrasonic lens
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/21/10.1063/1.4720149
10.1063/1.4720149
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