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An acoustic focusing device with an interdigital transducer on a thin piezoelectric plate

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1 Author(s)
Toda, Kohji ; National Defense Academy, Yokosuka, Japan

A new type of Lamb wave device for acoustic focusing is presented. The device has an interdigital transducer deposited on a thin piezoelectric ceramic plate. In the device, Lamb wave is radiated from the surface without the interdigital electrodes into water and interferes constructively at a focal point in water.

Published in:

Proceedings of the IEEE  (Volume:67 ,  Issue: 8 )