Patent Number: 8,877,085

Title: Piezoelectric and/or pyroelectric composite solid material, method for obtaining same and use of such a material

Abstract: A piezoelectric and/or pyroelectric composite solid hybrid material, includes: a solid dielectric matrix, a filler of at least one inorganic piezoelectric and/or pyroelectric material, wherein the filler includes filiform nanoparticles distributed throughout the volume of the solid dielectric matrix with an amount by volume of less than 50%, and in that the main directions of elongation of the filiform nanoparticles of the inorganic filler distributed in the dielectric matrix have a substantially isotropic distribution in the solid dielectric matrix. Also described is method for manufacturing and using such a hybrid material for producing structural parts and supported films deposited on the surface of such a substrate for: detecting mechanical stress by direct piezoelectric effect; detecting temperature variations by direct pyroelectric effect; creating a mechanical wave by reverse piezoelectric effect in a flexible audio device, in a de-icing device or in a mechanical anti-fouling device; and manufacturing a soundproof material.

Inventors: Capsal; Jean-Fabien (Toulouse, FR), David; Charlotte (Toulouse, FR), Dantras; Eric (Toulouse, FR), Lacabanne; Colette (Toulouse, FR)

Assignee: Universite Paul Sabatier Toulouse III

International Classification: H01L 37/00 (20060101); H01L 41/18 (20060101); H01L 41/22 (20130101)

Expiration Date: 2019-11-04 0:00:00