Patent ID: 6994762

Claim:
A method for imparting a compressive strain to a single crystal piezo (SCP) material, comprising: placing a flexible substrate preformed in a curved shape on a support surface; placing a first player of adhesive on a first surface of said flexible substrate; placing a layer of single crystal piezo (SCP) material on said adhesive; aligning a layer of uniaxial graphite over said SCP layer; placing a second layer of adhesive on one of said SCP layer or said uniaxial graphite layer; and bonding said SCP layer to said flexible substrate in a manner that causes sandwiching of said uniaxial graphite layer to said SCP layer and said flexible substrate, and that further causes a spring force of said flexible substrate to impart a compressive stress into said SCP material, said uniaxial graphite layer preventing a tensile strain from being created in said SCP material in a direction orthongal to axis along which said compressive stress is imparted.