#$%^&*AU2007201176B220120517.pdf#####ABSTRACT A composite end effector for an ultrasonic surgical instrument is provided and includes a first portion formed from a first material that exhibits a first characteristic value when excited by an ultrasonic energy input and a second portion formed from a second material that exhibits a second characteristic value when excited by the ultrasonic energy input. The composite end effector exhibits a composite characteristic value different from the first and second characteristic values when excited by the ultrasonic energy input.2/6 0V) NN N L L . CDD NC ~ (N0