Patent ID: 7064950
Filing Date: 2006-06-20
Classification: H01L

Abstract:
1. A circuit device comprising: at least two ferroelectric films, each of the films having a graded dipole moment in a thickness direction normal to a first surface thereof and continuing to an oppositely-disposed second surface thereof, the graded dipole moment of each film being effective to produce a change in the dipole charge density and hence an apparent net charge on the first and second surfaces of the film when an electric field is applied to the film and additional energy is imparted to the film; and an electrical connection contacting one of the first and second surfaces of a first of the films and one of the first and second surfaces of a second of the films so as to form a junction, wherein the changes in the dipole charge density of the films generated by applying an alternating electric field yield a device charge separation output that differs from each of the changes in the dipole charge density of the films.