MATERIAL PROPERTY EFFECTS ON FOCUSED BEAM TRANSDUCERS
Author: James C. P. McKeon Company: Sonix, Inc. Date Published: 2/13/2001
Pan Pacific Symposium
Abstract: As the feature sizes in microelectronic components continue to shrink, it becomes increasingly difficult to resolve the individual layers within the package. Ongoing research efforts have focused on increasing the frequency of the ultrasonic transducers allowing for increased depth resolution. However, in choosing a transducer for an application, it is critical to consider not only the frequency of the transducer, but the focal length as well. In addition, the focal length within the sample must be considered not just the stated focal length in water. In this paper, the effect of common microelectronic materials on transducer focal length is discussed.
Keywords: SAM, microelectronics, transducers, material property effects