Single crystal domain driven bender actuator

Details Single crystal domain driven bender actuator Single crystal domain driven bender actuator

1991-08-05

1992-08-25

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310330, 310358, 310360, H01L 4108

Patent

active

051421860

ABSTRACT:
A single crystal bender actuator for selectively positioning a movable precision optical or acoustical component is described which comprises a single crystal of barium titanate, barium strontium titanate, barium lead titanate, potassium niobate tantalate, lead titanate-lead magnesium niobate or other material in which a special domain structure can be induced to produce a very high strain bimorph configuration, the single crystal operatively interconnecting support structure and the movable component, and means for selectively applying an electric field of controllable field strength to the crystal.

REFERENCES:
patent: 1802780 (1931-04-01), Sawyer
patent: 2633543 (1953-03-01), Howatt
patent: 2659829 (1953-11-01), Baerwald
patent: 2756353 (1956-07-01), Samsel
patent: 3732549 (1973-05-01), Barkely
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patent: 4524294 (1985-06-01), Brody
patent: 4714848 (1987-12-01), Chen
patent: 4862029 (1989-08-01), Kasai et al.
Domain Structures and Phase Transitions in Barium Titanate, P. W. Forsber Jr. Oct. 15, 1949.
Notes, Physical Constants, Apparent, Ionization Constants (250), vol. 76.

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