| abstract |
In one aspect, a matching layer is provided for an ultrasonic transducer stack having a matching layer that includes a matrix material loaded with a plurality of micron-sized and nano-sized particles. In other embodiments, the matrix material is loaded with a plurality of heavy and light particles. In another aspect, the ultrasonic transducer stack comprises a piezoelectric layer and at least one matching layer. In one embodiment, the matching layer comprises a composite material comprising a matrix material loaded with a plurality of micron-sized and nano-sized particles. In a further aspect, the composite material also includes a matrix material loaded with a plurality of heavy and light particles. In a further embodiment, the matching layer can also include cyanoacrylate. |