Thin structures having a piezoelectric effect, devices equipped

Details Thin structures having a piezoelectric effect, devices equipped Thin structures having a piezoelectric effect, devices equipped

1977-05-19

1978-06-06

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310800, H01L 4110

Patent

active

040938840

ABSTRACT:
A leaf of suitable dielectrical material bears, trapped on one at least of its two surfaces, equal or substantially equal amounts of positive and negative electrostatic charges, these charges being preferably injected into the leaf by successive ionization in reverse directions of gaseous layers against said surface. The device is valuable in piezoelectric or pyroelectric devices such as ultrasonic transducers, pressure or vibration detectors, microphones, heat or infrared radiation detectors.

REFERENCES:
patent: 2740184 (1956-04-01), Thomas
patent: 3276031 (1966-09-01), Gaynor
patent: 3365593 (1968-01-01), Roof et al.
patent: 3792204 (1974-02-01), Murayama et al.
patent: 3793715 (1974-02-01), Murayama et al.
patent: 3832580 (1974-08-01), Yamamuro et al.
patent: 3894198 (1975-07-01), Murayama et al.

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