In the present invention, a PMOS device comprises a channel region formed in {100} silicon with first and second sourcedrain region disposed on either side of the channel region. An application domain includes data context instances, database connections, object models mapped by an object-relational mapper, and database initializers. At least four piezoelectric crystal sheets of the plurality of piezo-electric crystal sheets are adhered on an inside focusing face of the backing with a protective layer covering the surface of the sheets.