The Penn State Research Foundation

Sedat Alkoy

Robert E Newnham

Joe Kennedy Cochran, Jr

An electroactive device incorporating the invention is configured from an electroactive ceramic hollow sphere having an inner surface, an outer surface, a wall thickness aspect and a radius aspect. Conductive electrodes are positioned on opposed surfaces of said sphere and conductors enable application of an electrical potential between the conductive electrodes to enable a field to be applied to said sphere that causes a dimension change in the radius aspect and thickness aspect thereof. In one embodiment the sphere has a d,direction parallel to the thickness aspect, and d,& d,directions parallel to the sphere surfaces and in another embodiment the d,direction is perpendicular to the thickness aspect, and d,& d,directions are respectively parallel and perpendicular to the sphere surfaces. The sphere is preferably supported by a rod that either passes throng one opening in the sphere or through two opposed openings. Further, the rod may include a pathway for other instrumentality's. Arrays of such devices are also disclosed.

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Akhisar, Turkey

Sedat Alkoy