H - Electricity – 04 – R
Patent
H - Electricity
04
R
H04R 17/02 (2006.01) B06B 1/06 (2006.01)
Patent
CA 2092929
ABSTRACT OF THE DISCLOSURE A phase-insensitive ultrasonic transducer has a zinc oxide single crystal as a piezoelectric semiconducting acoustoelectric element, providing high sensitivity and operable over a range of wavelengths of the ultrasonic waves. The electrical conductivity of said zinc oxide single crystal may be selected in the range 10-8 to 10-2 .OMEGA.-1.cm-1. The single crystal can have an attenuation rate for ultrasonic waves of 10 MHz of at least 0.8 cm-1.
Asai Yuji
Ishida Yoshihiko
Tani Makoto
Marks & Clerk
Ngk Insulators Ltd.
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