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AssigneeUniversity of Bolton
InventorsElias Siores, Magundappa L. (Ravi) Hadimani
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A piezoelectric polymer element such as a fiber or film is described, having a solid cross-section and a substantially homogeneous composition. A method of forming such a piezoelectric polymer element is also described. The method has the steps of extruding a polymer material and concurrently poling a region of the extruded material. Apparatus for forming such a piezoelectric polymer element is also described that comprises an extruder for extruding a polymer element from a granular feed and a pair of electrodes for applying an electric field across a region of the element concurrently with its extrusion. Also described is a piezoelectric construct having such piezoelectric polymer elements interposed between two conductive layers. A system for converting mechanical energy into electrical energy is described in which each of the piezoelectric construct's two conductive layers is connected to a respective terminal of a rectifying circuit.
A method of forming a piezoelectric polymer element, the method having the steps of extruding a polymer material and concurrently poling a region of the extruded material, wherein the region is drawn across one or more heated rollers prior to poling.
An apparatus for forming a piezoelectric polymer element, the apparatus comprising an extruder for extruding said polymer element from a granular feed, a pair of electrodes for applying an electric field across a region of said element concurrently with the extrusion of the element, and one or more heated rollers arranged for said region to be drawn across the rollers prior to application by the electrodes of an electric field across said region.
Dependencies are inferred from the claim text.