Patent ID: 7642115

Claim:
A method for forming a transducer comprising the steps of: providing a semiconductor-on-insulator wafer including first and second semiconductor layers separated by an electrically insulating layer; depositing or growing a piezoelectric or piezoresistive film on said wafer; depositing or growing an electrically conductive material on said piezoelectric or piezoresistive film to form at least one electrode; depositing or growing a bonding layer including an electrical connection portion that is located on or is electrically coupled to said electrode; providing a ceramic substrate having a bonding layer located thereon, said bonding layer including an electrical connection portion and being patterned in a manner to generally match said bonding layer of said wafer; and causing said bonding layer of said wafer and said bonding layer of said substrate to bond together to thereby mechanically and electrically couple said wafer and said substrate to form said transducer, wherein the electrical connection portions of said bonding layers of said wafer and said substrate are fluidly isolated from the surrounding environment by said bonding layers.