Abstract: A method of fabricating an acoustic transducer comprising: fabricating a substrate; depositing a bottom electrode on the substrate; depositing an active layer on the bottom electrode; depositing a top electrode on the active layer; wherein at least one electrode is patterned to form at least two active elements; and, wherein a ratio of a thickness coupling coefficient kt to an effective lateral coupling coefficient k31,eff of the active layer is 1.3 or greater.

Abstract: An energy harvesting unit comprising: a package formed by a base and a lid, the package including a sealed interior volume and an exterior; a ledge formed in the sealed interior volume with a first cavity above and a second cavity below the ledge; a plurality of inner electrical contacts formed on the ledge; a plurality of outer electrical contacts formed on the exterior of the package wherein the outer electrical contacts are electrically connected to the inner electrical contacts through the package; and, a piezo-electric member in electrical communication with the inner electrical contacts and coupled to the ledge on a first side of the package and spanning across the cavity and coupled to the ledge on an opposite side of the package.

Abstract: A composite piezoelectric material, manufacturing of the composite material and use of this composite material in piezoelectric components are disclosed. More particularly, a piezoelectric thick film materials or piezoelectric paint being a composite piezoelectric material including piezoelectric particles randomly dispersed within a polymer matrix are disclosed. A paste of composite piezoelectric material including a matrix of polymer having a relative permittivity ?3, normally ?6, sintered piezoelectric particles having a relative permittivity in the range of 100-5000, normally in the range of 400-1000 and an average particle size between 1 and 50 ?m, although the particles should be smaller than 1/10 of the final thickness of the final layer of piezoelectric material, and additives such as dispersing agents or thinner are disclosed where the final paste has a 0-3 connectivity pattern, a content of sintered piezoelectric particles between 15 and 75 vol %, normally between 40 and 60 vol %.

Abstract: A method of fabricating an acoustic transducer comprising: fabricating a substrate; depositing a bottom electrode on the substrate; depositing an active layer on the bottom electrode; depositing a top electrode on the active layer; wherein at least one electrode is patterned to form at least two active elements; and, wherein a ratio of a thickness coupling coefficient kt to an effective lateral coupling coefficient k31,eff of the active layer is 1.3 or greater.

Abstract: An energy harvesting unit comprising: a package formed by a base and a lid, the package including a sealed interior volume and an exterior; a ledge formed in the sealed interior volume with a first cavity above and a second cavity below the ledge; a plurality of inner electrical contacts formed on the ledge; a plurality of outer electrical contacts formed on the exterior of the package wherein the outer electrical contacts are electrically connected to the inner electrical contacts through the package; and, a piezo-electric member in electrical communication with the inner electrical contacts and coupled to the ledge on a first side of the package and spanning across the cavity and coupled to the ledge on an opposite side of the package.

Abstract: A composite piezoelectric material, manufacturing of the composite material and use of this composite material in piezoelectric components are disclosed. More particularly, a piezoelectric thick film materials or piezoelectric paint being a composite piezoelectric material including piezoelectric particles randomly dispersed within a polymer matrix are disclosed. A paste of composite piezoelectric material including a matrix of polymer having a relative permittivity?3, normally ?6, sintered piezoelectric particles having a relative permittivity in the range of 100-5000, normally in the range of 400-1000 and an average particle size between 1 and 50 ?m, although the particles should be smaller than 1/10 of the final thickness of the final layer of piezoelectric material, and additives such as dispersing agents or thinner are disclosed where the final paste has a 0-3 connectivity pattern, a content of sintered piezoelectric particles between 15 and 75 vol %, normally between 40 and 60 vol %.