Patent ID: 8419984

Claim:
A self-supported crystalline film having nano-sized grains being in a ferroelectric phase and having at least three different crystallographic variants defining at least two polycrystalline macro-domains, said nano-sized grains being self-organized into linear and wedge-ordered arc-shaped regions; the film being shaped to define at least one film region comprising a buckled region being self-supported by a substrate; said buckled region having macro-domains of a predetermined shape and different orientations of crystallographic axes with respect to the film's surface, said buckled region being formed by first creating a window in said substrate to form at least two-spaced-apart portions upon which an amorphous self-supported film resides and then applying a crystallization step to said amorphous self-supported film to create a self-supported crystalline film; upon applying a temperature change to the self-supported crystalline film induce movement of the polycrystalline macro-domains boundaries, the films being configured to have a minimal difference between dimension of said linear regions and dimensions of said window to thereby enable super-pyroelectric properties.