PNNL's Applied Physics group offers a broad range of expertise in noninvasive measurement technologies that assist government industrial clients in solving difficult sensing, monitoring and processing problems. Applied Physics consists of approximately 40 engineers and scientists who develop measurement systems grounded in an in-depth understanding of the science underpinning advanced measurement technologies for the characterization of complex materials and structures. Our capabilities in acoustics and ultrasound, optics, radar and millimeter-wave imaging, electromagnetics and technological assessment are being applied to the development of cutting-edge solutions. Researchers have also leveraged these capabilities to develop novel acoustic processing techniques in the high-energy, non-linear, acoustic regime. This allows PNNL to address a wide variety of practical problems from nuclear engineering, to advanced sensing and detection for security applications, to manufacturing processes. Our talented and versatile staff, drawing upon knowledge gained through more than 35 years of government- and industry-sponsored research activities, can provide a continuum of expertise from basic science theory through hardware development.