Method of producing transducers with phase, area and depth contr

Details Method of producing transducers with phase, area and depth contr Method of producing transducers with phase, area and depth contr

1974-07-05

1976-04-13

Budd, Mark O.

Electrical generator or motor structure

Educational or construction units or kits

310 81, 310 85, 310 95, 317262F, H01L 4108

Patent

active

039506592

ABSTRACT:
A method for obtaining controlled depth, controlled area, and controlled phase polarization of a piezoelectric transducer element. A controlled phase bias voltage is applied to two generally opposing surfaces of the transducer element, and heat is then applied in a pulsed fashion to one of the two surfaces. By properly coordinating the phase of the bias voltage and the pulsed heating of the one surface, discrete layers of polarization may be created between the two surfaces, the phase, area and depth of the discrete layers being accurately controllable.

REFERENCES:
patent: 2659829 (1953-11-01), Baerwald
patent: 2767067 (1956-10-01), Prichard
patent: 2928032 (1960-03-01), Daniel et al.
patent: 3766616 (1973-10-01), Stauote

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