Document Type

Article

Publication Date

1-24-2006

Journal or Book Title

Journal of the Acoustical Society of America

Volume

119

Issue

2

First Page

EL1

Last Page

EL6

DOI

10.1121/1.2152293

Abstract

A spherically focused no mirrors capacitive-film, air-coupled ultrasonic transducer, constructed using a spherically deformed backplate and metalized polymer film, has been designed, fabricated, and its performance characterized. A 1 cm diameter device has a center frequency of 805 kHz and a 6 dB bandwidth of 760 kHz. Comparisons of field strength in the focal zone with theoretical calculations for a spherically focused piston show that the device achieves diffraction-limited focusing. The nominal focal point of 25 mm lies within 0.01 mm of the calculated value for this device.

Comments

This article was originally published in Journal of the Acoustical Society of America 119, no. 2 (2006): EL1–EL6, doi:10.1121/1.2152293.

Copyright Owner

Acoustical Society of America

Language

en

Date Available

November 14, 2012

File Format

application/pdf

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